This document discusses noise pollution monitoring and impacts on human health in Dehradun City, India. It finds that noise pollution levels in certain areas of the city exceed recommended limits, with major sources being transportation and frequent horn use in vehicles. Prolonged exposure to high noise levels can cause health issues like hearing loss, cardiovascular damage, and reduced work efficiency. The paper recommends implementing a management strategy to limit noise pollution in affected areas, including restricting vehicle horn use and planting trees as buffers.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Assessment of noise pollution in chidambaram towneSAT Journals
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Abstract Noise generally is known as unwanted and unwelcome sound. It is considered as the most pervasive pollutant besides the emission pollutants. Along with the increasing degree of air and water pollution, noise pollution is also emerging as a new threat to the inhabitants of Chidambaram town. Noise pollution generated from vehicles with its influence on life quality and the environment may be considered as a hot topic in scientific research and one of the main concerns of the world, especially in urban areas. Motorized traffic is one of the major sources of noise pollution in urban areas. Ambient noise level monitoring was carried out at various locations of the Chidambaram town during 2011(September –November).The data obtained was used to compute various noise parameters, namely equivalent continuous level (Leq), Noise pollution level (Lnp), Noise climate (NC), Percentile noise levels (L10, L50, L90).The comparison of the data shows that the noise levels at various locations of the Chidambaram town are more than the permissible limits. Vehicular traffic and air horns are found to be the main reasons for these high noise levels. This study examines the problems of reduction of individual's efficiency in his/her respective working places because of road traffic noise pollution in Chidambaram due to rapidly growing vehicular traffic. This paper deals with monitoring of the disturbances caused due to vehicular road traffic interrupted by traffic flow conditions on personal work performance. Traffic volume count and noise indices data were collected simultaneously at ten selected sites of the town. The noise level values for exceeded the standards set by the central pollution control board. Index Terms: Ambient noise, level, Noise pollution, Noise climate, dB (A) decibel, Vehicular traffic.
ENVIRONMENTAL NOISE POLLUTION MONITOR MODEL RT-5001.Madan Krishna
Â
Environmental Noise Pollution Monitor - Range : 0 to 150 db - To instantly measure the Noise Pollution Levels under various ambient conditions - With A,B & C Weighted Frequency Networks - With Fast & Slow Response Characteristics - With built-in Calibrator of Standard Frequency for on-site Calibration - Designed as per ISO 14001 : 2015 Standards - Supplied with a 12-month Warranty against all manufacturing defects - Portable hand-held battery operated micro-processor based Model RT-5001 with digital display, Wind Shield & Carry case.
For your requirement, please contact: K.A.Madan, Mob.: 94440 12056, e.mail : hiraytech@yahoo.co.in
Noise pollution comes from various sources like industrial activities, transportation, construction, and domestic settings. It can negatively impact human health by causing hearing loss, cardiovascular issues, learning problems, and psychological stress. The document outlines different types and measurement of noise pollution and strategies to control noise and protect human health such as reducing sound levels, interrupting noise transmission, and protecting receptors through awareness and preventive measures.
This document contains the results of noise monitoring conducted at an industrial facility. It begins with introductions to sound, noise, and decibel measurements. Personal noise monitoring found exposure above limits for some workers. Area monitoring identified the highest noise levels near boilers and pumps. Recommendations include maintenance of equipment, use of protective equipment, health monitoring of workers, and engineering controls like enclosures.
Noise pollution is an environmental problem caused by unwanted and unpleasant sounds that can be measured in sound pressure levels. The main modern sources of noise pollution are increased transportation like vehicles, construction activities due to urbanization, industrial operations to meet daily needs, and events with loud noises. The effects of noise pollution include obstructed communications, hearing damage, and physiological and psychological changes.
Groundwater Contamination and preventionMohit Dwivedi
Â
Groundwater is water present below the ground surface that saturates the pore space in the subsurface.
At least 50% of the world population depends on groundwater as a source of drinking water.
Other uses of groundwater includes Irrigation of crops, Industrial uses etc.
Groundwater is a part of natural water cycle therefore, it can spread throughout the cycle and if contaminated, can cause damage to other entities ( Sea life, lakes, human health etc)
Groundwater can be polluted / contaminated as a result of HUMAN activity and Natural conditions.
Contaminations found in the groundwater cover a broad range of physical, chemical (Organic & Inorganic), bacterial and radioactive parameters.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Assessment of noise pollution in chidambaram towneSAT Journals
Â
Abstract Noise generally is known as unwanted and unwelcome sound. It is considered as the most pervasive pollutant besides the emission pollutants. Along with the increasing degree of air and water pollution, noise pollution is also emerging as a new threat to the inhabitants of Chidambaram town. Noise pollution generated from vehicles with its influence on life quality and the environment may be considered as a hot topic in scientific research and one of the main concerns of the world, especially in urban areas. Motorized traffic is one of the major sources of noise pollution in urban areas. Ambient noise level monitoring was carried out at various locations of the Chidambaram town during 2011(September –November).The data obtained was used to compute various noise parameters, namely equivalent continuous level (Leq), Noise pollution level (Lnp), Noise climate (NC), Percentile noise levels (L10, L50, L90).The comparison of the data shows that the noise levels at various locations of the Chidambaram town are more than the permissible limits. Vehicular traffic and air horns are found to be the main reasons for these high noise levels. This study examines the problems of reduction of individual's efficiency in his/her respective working places because of road traffic noise pollution in Chidambaram due to rapidly growing vehicular traffic. This paper deals with monitoring of the disturbances caused due to vehicular road traffic interrupted by traffic flow conditions on personal work performance. Traffic volume count and noise indices data were collected simultaneously at ten selected sites of the town. The noise level values for exceeded the standards set by the central pollution control board. Index Terms: Ambient noise, level, Noise pollution, Noise climate, dB (A) decibel, Vehicular traffic.
ENVIRONMENTAL NOISE POLLUTION MONITOR MODEL RT-5001.Madan Krishna
Â
Environmental Noise Pollution Monitor - Range : 0 to 150 db - To instantly measure the Noise Pollution Levels under various ambient conditions - With A,B & C Weighted Frequency Networks - With Fast & Slow Response Characteristics - With built-in Calibrator of Standard Frequency for on-site Calibration - Designed as per ISO 14001 : 2015 Standards - Supplied with a 12-month Warranty against all manufacturing defects - Portable hand-held battery operated micro-processor based Model RT-5001 with digital display, Wind Shield & Carry case.
For your requirement, please contact: K.A.Madan, Mob.: 94440 12056, e.mail : hiraytech@yahoo.co.in
Noise pollution comes from various sources like industrial activities, transportation, construction, and domestic settings. It can negatively impact human health by causing hearing loss, cardiovascular issues, learning problems, and psychological stress. The document outlines different types and measurement of noise pollution and strategies to control noise and protect human health such as reducing sound levels, interrupting noise transmission, and protecting receptors through awareness and preventive measures.
This document contains the results of noise monitoring conducted at an industrial facility. It begins with introductions to sound, noise, and decibel measurements. Personal noise monitoring found exposure above limits for some workers. Area monitoring identified the highest noise levels near boilers and pumps. Recommendations include maintenance of equipment, use of protective equipment, health monitoring of workers, and engineering controls like enclosures.
Noise pollution is an environmental problem caused by unwanted and unpleasant sounds that can be measured in sound pressure levels. The main modern sources of noise pollution are increased transportation like vehicles, construction activities due to urbanization, industrial operations to meet daily needs, and events with loud noises. The effects of noise pollution include obstructed communications, hearing damage, and physiological and psychological changes.
Groundwater Contamination and preventionMohit Dwivedi
Â
Groundwater is water present below the ground surface that saturates the pore space in the subsurface.
At least 50% of the world population depends on groundwater as a source of drinking water.
Other uses of groundwater includes Irrigation of crops, Industrial uses etc.
Groundwater is a part of natural water cycle therefore, it can spread throughout the cycle and if contaminated, can cause damage to other entities ( Sea life, lakes, human health etc)
Groundwater can be polluted / contaminated as a result of HUMAN activity and Natural conditions.
Contaminations found in the groundwater cover a broad range of physical, chemical (Organic & Inorganic), bacterial and radioactive parameters.
Groundwater contamination can occur from various point and nonpoint sources. Point sources include storage tanks, landfills, and pipeline releases. Nonpoint sources include agricultural activities. Principal sources of groundwater pollution include municipal sources like sewer leakage and liquid wastes; industrial sources like liquid wastes, tank and pipeline leakage, and mining activities; agricultural sources like irrigation return flows, animal wastes, fertilizers and pesticides; and miscellaneous sources like urbanization, spills, stockpiles, septic tanks, and roadway de-icing. Pollutants can enter groundwater and persist for decades due to the difficulty of detecting and controlling subsurface pollution compared to surface water pollution.
Descriptive analysis of awareness about land pollution, water pollution, air ...Poonam Sankhe
Â
The document provides an introduction to various types of pollution - air, water, land and noise pollution. It discusses their causes and effects. It begins with defining pollution and providing a brief history of pollution dating back to the Stone Age. It then defines each type of pollution in 1-2 sentences and lists some of their key disadvantages. For air pollution, it notes how it affects health and climate change. For water pollution, it mentions excess fertilizers and animal waste as common causes. Land pollution is discussed in the context of agricultural chemicals and industrial wastes affecting soil quality. Noise pollution is defined as disturbing or excessive noise impacting life.
15) groundwater contamination, prevention and remedial techniques as on 27-05...Najam Ul Syed Hassan
Â
This document discusses groundwater contamination and remediation. It introduces groundwater and its importance as a source of drinking water for over 50% of the world's population. It describes how groundwater can become contaminated through human activities like industrial chemical spills and leaks, improper waste disposal, and excessive pesticide and fertilizer use. Both ex-situ and in-situ remediation techniques are discussed for removing contaminants from groundwater, such as pump and treat methods, bioremediation, and air sparging. Specific contaminants like TCE, MTBE, EDC, and gasoline are also summarized along with their typical treatment technologies. The document emphasizes the importance of preventing groundwater contamination to avoid costly
Groundwater and surface water are interconnected through the hydrologic cycle and comprise our water resources. However, extraction and pollution are threatening these resources. Over-pumping of aquifers like the High Plains Aquifer has caused water tables to drop significantly. The Middle East is also over-pumping groundwater, causing saltwater intrusion. Once polluted, groundwater remains contaminated for a long time since it flows more slowly than surface water. Increased water demand and improper management are reducing available fresh water supplies globally. Sustainable practices are needed to protect this vital resource for the future.
Groundwater can become contaminated through human activities like industrial chemical spills, improper waste disposal, and excessive use of fertilizers and pesticides. Once contaminants enter an aquifer, they can pollute groundwater and cause health issues. Pumping wells can exacerbate the problem by changing groundwater flow directions and spreading pollutants. Various groups need to take actions to prevent contamination, including proper management of industrial waste, reducing agricultural chemical use, and proper household chemical disposal. Remediation methods aim to remove pollution from groundwater, either by extracting and treating water above ground or treating it within the aquifer. Conservation of groundwater resources requires effort from all.
Groundwater is water located beneath the Earth's surface that infiltrates through soil and fills pores and cracks in rock. It is found within two main zones - the unsaturated zone above the water table where pores contain both air and water, and the saturated zone below where all pores are filled with water. Groundwater is recharged from precipitation and flows through the ground via gravity and pressure differences, discharging through springs, streams or being extracted by wells. Contamination can enter groundwater from various sources like spills, waste disposal or fertilizers, spreading through the subsurface over time. Treatment methods aim to filter out contaminants but remediating polluted groundwater is challenging.
Waste water treatment involves three main stages: primary, secondary, and tertiary treatment. Primary treatment involves physical processes like screening, sedimentation, and flotation to remove solids. Secondary treatment uses microorganisms in aerobic processes like activated sludge to break down organic waste. Tertiary treatment provides additional removal of nutrients or other pollutants through chemical or biological methods. Proper treatment of effluent is necessary before discharge to reduce environmental impacts.
Noise Pollution is defined as any undesirable human or machine created noise which disturbs human or animal activity or balance. It is measured in decibels (dB) which is a logarithmic ratio of sound pressures. Prolonged exposure to loud noise can cause permanent hearing loss, annoyance, stress, and disrupted sleep and human performance. Noise pollution affects animals through hearing loss, physiological stress, and disruption of behavior and ecosystems. Plants are also impacted through reduced growth. Control measures include reducing noise at the source through improved machinery and mufflers, zoning of industrial areas away from homes, sound insulation of buildings, use of ear protection, legislative bans on loud noises, and planting trees.
This presentation provides an overview of domestic wastewater treatment. It discusses preliminary treatment including screening and grit removal. Primary treatment involves settling suspended solids. Secondary treatment uses biological processes like activated sludge or trickling filters. Sludge is treated through thickening, stabilization via aerobic or anaerobic digestion, dewatering, and ultimate disposal. Nitrogen and phosphorus can be removed through additional processes.
1) Water treatment involves ensuring a safe and clean drinking water supply. It requires identifying a water source and protecting it from contamination through appropriate treatment and distribution.
2) Conventional drinking water treatment typically includes aeration, coagulation/flocculation, sedimentation, filtration and disinfection. It aims to remove microbes, particles, dissolved solids and other pollutants.
3) The key processes involve adding coagulants to neutralize particle charges, forming flocs for removal via sedimentation and filtration. Chlorine is commonly used for disinfection but produces disinfection byproducts, so alternatives like chloramines and ozone are also used.
INTRODUCTION TO WATER POLLUTION PARAMETERS -CONCEPT, OBJECTIVES AND NEED OF W...Arvind Kumar
Â
This document provides an introduction to water pollution parameters. It discusses sources of water pollution including point sources like factories and non-point sources like agricultural fields. It also covers water quality issues in India like seasonal variations and pollution from industrial and domestic activities. The document outlines major categories of water pollution such as infectious agents, organic chemicals, inorganic chemicals, and discusses their sources and harmful effects.
This document discusses wastewater treatment. It defines wastewater as used water that contains food scraps, oils, soaps, and human and industrial wastes. Wastewater is treated at a wastewater treatment plant (WWTP) through primary, secondary, and tertiary treatment stages to remove pollutants. Primary treatment removes large solid objects, secondary treatment uses biological processes like activated sludge to remove dissolved and suspended organic matter, and tertiary treatment uses disinfection like chlorination to kill pathogens. The goal of wastewater treatment is to recycle water for reuse and protect public health and aquatic environments.
This document provides an overview of water pollution. It discusses how water pollution occurs from both point sources like oil spills as well as non-point sources like agricultural runoff. It outlines the major causes of water pollution including sewage, nutrients from fertilizers, silt, organic materials, and chemical contaminants. It also discusses different types of pollutants like pathogens, petroleum, radioactive substances, and heat. Legislation passed to help control water pollution is summarized.
Water pollution occurs when contaminants are released into water sources, degrading water quality for other uses. There are two main types of water pollution: surface water pollution which impacts oceans, rivers and lakes, and groundwater pollution which impacts underground sources. Water pollution can be caused by sewage, industrial waste, marine dumping, and other sources, and has negative effects on the environment, humans, and animals, including toxic water, diseases, and animal deaths. Individual actions like conserving water, proper fertilizer use, and cleanups can help reduce water pollution.
The document summarizes various stages of wastewater treatment processes. It discusses preliminary treatment which removes solids, grit, and grease. Primary treatment uses sedimentation to remove 60% of suspended solids. Secondary treatment uses biological processes like activated sludge and oxidation ditches to remove organic matter. Tertiary treatment further removes nutrients and particles through processes like filtration and disinfection. The document provides details on the treatment units and processes involved at each stage of wastewater treatment.
The document summarizes a study that estimated noise reduction from different types of vegetation along a highway in East Java, Indonesia. The study measured noise levels with and without vegetation barriers at distances of 5, 16, 18, and 20 meters from the highway. Pithecellobium dulce provided the highest noise reduction of up to 10.12% at a distance of 20 meters. In general, noise reduction increased with distance from the highway and was highest for Pithecellobium dulce, followed by Pterocarpus indicus, Tectonagrandis, and Samaneasaman. The results suggest that vegetation, especially Pithecellobium dulce, can effectively reduce highway noise near settlements
IRJET- Increasing Noise Pollution in SRTM University Campus Area of Vishn...IRJET Journal
Â
This document summarizes a study on increasing noise pollution in the Swami Ramanand Teerth Marathwada University campus area in Nanded, India. Noise levels were measured between January 2018 and December 2018 at 20 sampling sites, including locations designated as silence zones, residential areas, and commercial areas. The results found noise levels exceeding permissible limits set by the Central Pollution Control Board, with some commercial areas reaching up to 85 dB during the day. Increasing population, urbanization, construction activities, and vehicle traffic were concluded to be contributing factors to rising noise pollution levels in the university campus area.
Dust emission has become a major cause of
environmental pollution which has many adverse effects on living
beings and non-living things. Construction industry revolution
and development of Southern Pune has led to an increase in the
demand of building materials manifold. The process of quarrying
for extraction of building materials is responsible for heavy air
pollution. Blasting, handling and transportation of aggregates
emits large quantity of dust particles within Katraj region. Dry
weather condition and high speed wind spreads the dust which
increases the environmental risk. The objective to study the
analysis of impact of dust pollution on environment within the
Katraj region is to assess the potential risks in quantitative and
qualitative manner. The core knowledge of dust concentration,
behavior and complex properties of particulate matter helps to
formulate the methods and policies to exert control on their
emission and distribution.
The natural as well as artificial lakes, the source of ground
water in Southern region of Katraj, are subjected to the
deposition of heavy suspended particulate matter. Through
experimentation, it has been observed that the deposition of such
dust matter in the local atmosphere has led to significant changes
in the physical, chemical and biological parameters relating to
natural resources as it reflects in the alarming deviation of these
parameters from standard values. The present study will create
awareness and save the environment of Katraj from impending
consequences of dust particle emission
Evaluation of mechanical properties and
metallurgical changes, which occur in AISI 431 martensitic
stainless steel as a result of the welding processes consisting of
electron beam welding (fusion welding) and friction welding
(solid state welding) is carried out. In addition, the influence of
post weld heat treatments on microstructure and mechanical
properties has also been investigated. Weld center in EB welding
exhibited a cast dendritic structure with ferrite network in a
matrix of un-tempered martensite. In friction welding, the weld
center exhibited thermo-mechanical effected structure consists of
fine intragranular acicular martensite in equiaxed prior austenite
grains. In both the welding processes, post weld tempering
treatment resulted in coarsening of the martensite which
increases with increase in tempering temperature. In the as-weld
condition, both EB and Friction welds exhibited high strength
and hardness and poor impact toughness. Increase in impact
toughness and decrease in strength and hardness is observed with
an increase in tempering temperature. However, high strength
and hardness observed in friction welds as compared to EB
welds, which may be due to fine grain size of the welds due to
thermo-mechanical work the weld undergoes during welding.
Low impact toughness is observed in friction welds as compared
to EB welds, due to presence of fine grained martensite.
Noise pollution in vadodara city a case study-35861EditorIJAERD
Â
This document summarizes a case study on noise pollution in Vadodara City, India. It measures noise levels at 20 major locations in the city between 9am-11am, 1pm-3pm, and 5pm-7pm using a sound level meter. The highest average noise levels were recorded at Sangam Circle (78.87 dB), MSU (77.16 dB), and OP Road (77.03 dB). Traffic noise was found to be the main source of noise pollution. The document concludes by stating objectives to study existing noise levels in the area and identify suitable mitigation measures.
IRJET- Effect of Noise on Human Psychology in Public Spaces of Dhaka CityIRJET Journal
Â
The document discusses the effects of noise pollution on human psychology in public spaces in Dhaka, Bangladesh. It measures noise levels at five public locations and interviews people at each location about the psychological impacts of noise. The study finds that noise from vehicles, crowds, and hawkers causes health issues like headaches and stress responses. Extreme noise is linked to problems like irritation, anxiety, and sleep disturbances. The busiest locations of Farmgate and Mirpur 10 have the highest noise levels and most reported psychological effects.
Groundwater contamination can occur from various point and nonpoint sources. Point sources include storage tanks, landfills, and pipeline releases. Nonpoint sources include agricultural activities. Principal sources of groundwater pollution include municipal sources like sewer leakage and liquid wastes; industrial sources like liquid wastes, tank and pipeline leakage, and mining activities; agricultural sources like irrigation return flows, animal wastes, fertilizers and pesticides; and miscellaneous sources like urbanization, spills, stockpiles, septic tanks, and roadway de-icing. Pollutants can enter groundwater and persist for decades due to the difficulty of detecting and controlling subsurface pollution compared to surface water pollution.
Descriptive analysis of awareness about land pollution, water pollution, air ...Poonam Sankhe
Â
The document provides an introduction to various types of pollution - air, water, land and noise pollution. It discusses their causes and effects. It begins with defining pollution and providing a brief history of pollution dating back to the Stone Age. It then defines each type of pollution in 1-2 sentences and lists some of their key disadvantages. For air pollution, it notes how it affects health and climate change. For water pollution, it mentions excess fertilizers and animal waste as common causes. Land pollution is discussed in the context of agricultural chemicals and industrial wastes affecting soil quality. Noise pollution is defined as disturbing or excessive noise impacting life.
15) groundwater contamination, prevention and remedial techniques as on 27-05...Najam Ul Syed Hassan
Â
This document discusses groundwater contamination and remediation. It introduces groundwater and its importance as a source of drinking water for over 50% of the world's population. It describes how groundwater can become contaminated through human activities like industrial chemical spills and leaks, improper waste disposal, and excessive pesticide and fertilizer use. Both ex-situ and in-situ remediation techniques are discussed for removing contaminants from groundwater, such as pump and treat methods, bioremediation, and air sparging. Specific contaminants like TCE, MTBE, EDC, and gasoline are also summarized along with their typical treatment technologies. The document emphasizes the importance of preventing groundwater contamination to avoid costly
Groundwater and surface water are interconnected through the hydrologic cycle and comprise our water resources. However, extraction and pollution are threatening these resources. Over-pumping of aquifers like the High Plains Aquifer has caused water tables to drop significantly. The Middle East is also over-pumping groundwater, causing saltwater intrusion. Once polluted, groundwater remains contaminated for a long time since it flows more slowly than surface water. Increased water demand and improper management are reducing available fresh water supplies globally. Sustainable practices are needed to protect this vital resource for the future.
Groundwater can become contaminated through human activities like industrial chemical spills, improper waste disposal, and excessive use of fertilizers and pesticides. Once contaminants enter an aquifer, they can pollute groundwater and cause health issues. Pumping wells can exacerbate the problem by changing groundwater flow directions and spreading pollutants. Various groups need to take actions to prevent contamination, including proper management of industrial waste, reducing agricultural chemical use, and proper household chemical disposal. Remediation methods aim to remove pollution from groundwater, either by extracting and treating water above ground or treating it within the aquifer. Conservation of groundwater resources requires effort from all.
Groundwater is water located beneath the Earth's surface that infiltrates through soil and fills pores and cracks in rock. It is found within two main zones - the unsaturated zone above the water table where pores contain both air and water, and the saturated zone below where all pores are filled with water. Groundwater is recharged from precipitation and flows through the ground via gravity and pressure differences, discharging through springs, streams or being extracted by wells. Contamination can enter groundwater from various sources like spills, waste disposal or fertilizers, spreading through the subsurface over time. Treatment methods aim to filter out contaminants but remediating polluted groundwater is challenging.
Waste water treatment involves three main stages: primary, secondary, and tertiary treatment. Primary treatment involves physical processes like screening, sedimentation, and flotation to remove solids. Secondary treatment uses microorganisms in aerobic processes like activated sludge to break down organic waste. Tertiary treatment provides additional removal of nutrients or other pollutants through chemical or biological methods. Proper treatment of effluent is necessary before discharge to reduce environmental impacts.
Noise Pollution is defined as any undesirable human or machine created noise which disturbs human or animal activity or balance. It is measured in decibels (dB) which is a logarithmic ratio of sound pressures. Prolonged exposure to loud noise can cause permanent hearing loss, annoyance, stress, and disrupted sleep and human performance. Noise pollution affects animals through hearing loss, physiological stress, and disruption of behavior and ecosystems. Plants are also impacted through reduced growth. Control measures include reducing noise at the source through improved machinery and mufflers, zoning of industrial areas away from homes, sound insulation of buildings, use of ear protection, legislative bans on loud noises, and planting trees.
This presentation provides an overview of domestic wastewater treatment. It discusses preliminary treatment including screening and grit removal. Primary treatment involves settling suspended solids. Secondary treatment uses biological processes like activated sludge or trickling filters. Sludge is treated through thickening, stabilization via aerobic or anaerobic digestion, dewatering, and ultimate disposal. Nitrogen and phosphorus can be removed through additional processes.
1) Water treatment involves ensuring a safe and clean drinking water supply. It requires identifying a water source and protecting it from contamination through appropriate treatment and distribution.
2) Conventional drinking water treatment typically includes aeration, coagulation/flocculation, sedimentation, filtration and disinfection. It aims to remove microbes, particles, dissolved solids and other pollutants.
3) The key processes involve adding coagulants to neutralize particle charges, forming flocs for removal via sedimentation and filtration. Chlorine is commonly used for disinfection but produces disinfection byproducts, so alternatives like chloramines and ozone are also used.
INTRODUCTION TO WATER POLLUTION PARAMETERS -CONCEPT, OBJECTIVES AND NEED OF W...Arvind Kumar
Â
This document provides an introduction to water pollution parameters. It discusses sources of water pollution including point sources like factories and non-point sources like agricultural fields. It also covers water quality issues in India like seasonal variations and pollution from industrial and domestic activities. The document outlines major categories of water pollution such as infectious agents, organic chemicals, inorganic chemicals, and discusses their sources and harmful effects.
This document discusses wastewater treatment. It defines wastewater as used water that contains food scraps, oils, soaps, and human and industrial wastes. Wastewater is treated at a wastewater treatment plant (WWTP) through primary, secondary, and tertiary treatment stages to remove pollutants. Primary treatment removes large solid objects, secondary treatment uses biological processes like activated sludge to remove dissolved and suspended organic matter, and tertiary treatment uses disinfection like chlorination to kill pathogens. The goal of wastewater treatment is to recycle water for reuse and protect public health and aquatic environments.
This document provides an overview of water pollution. It discusses how water pollution occurs from both point sources like oil spills as well as non-point sources like agricultural runoff. It outlines the major causes of water pollution including sewage, nutrients from fertilizers, silt, organic materials, and chemical contaminants. It also discusses different types of pollutants like pathogens, petroleum, radioactive substances, and heat. Legislation passed to help control water pollution is summarized.
Water pollution occurs when contaminants are released into water sources, degrading water quality for other uses. There are two main types of water pollution: surface water pollution which impacts oceans, rivers and lakes, and groundwater pollution which impacts underground sources. Water pollution can be caused by sewage, industrial waste, marine dumping, and other sources, and has negative effects on the environment, humans, and animals, including toxic water, diseases, and animal deaths. Individual actions like conserving water, proper fertilizer use, and cleanups can help reduce water pollution.
The document summarizes various stages of wastewater treatment processes. It discusses preliminary treatment which removes solids, grit, and grease. Primary treatment uses sedimentation to remove 60% of suspended solids. Secondary treatment uses biological processes like activated sludge and oxidation ditches to remove organic matter. Tertiary treatment further removes nutrients and particles through processes like filtration and disinfection. The document provides details on the treatment units and processes involved at each stage of wastewater treatment.
The document summarizes a study that estimated noise reduction from different types of vegetation along a highway in East Java, Indonesia. The study measured noise levels with and without vegetation barriers at distances of 5, 16, 18, and 20 meters from the highway. Pithecellobium dulce provided the highest noise reduction of up to 10.12% at a distance of 20 meters. In general, noise reduction increased with distance from the highway and was highest for Pithecellobium dulce, followed by Pterocarpus indicus, Tectonagrandis, and Samaneasaman. The results suggest that vegetation, especially Pithecellobium dulce, can effectively reduce highway noise near settlements
IRJET- Increasing Noise Pollution in SRTM University Campus Area of Vishn...IRJET Journal
Â
This document summarizes a study on increasing noise pollution in the Swami Ramanand Teerth Marathwada University campus area in Nanded, India. Noise levels were measured between January 2018 and December 2018 at 20 sampling sites, including locations designated as silence zones, residential areas, and commercial areas. The results found noise levels exceeding permissible limits set by the Central Pollution Control Board, with some commercial areas reaching up to 85 dB during the day. Increasing population, urbanization, construction activities, and vehicle traffic were concluded to be contributing factors to rising noise pollution levels in the university campus area.
Dust emission has become a major cause of
environmental pollution which has many adverse effects on living
beings and non-living things. Construction industry revolution
and development of Southern Pune has led to an increase in the
demand of building materials manifold. The process of quarrying
for extraction of building materials is responsible for heavy air
pollution. Blasting, handling and transportation of aggregates
emits large quantity of dust particles within Katraj region. Dry
weather condition and high speed wind spreads the dust which
increases the environmental risk. The objective to study the
analysis of impact of dust pollution on environment within the
Katraj region is to assess the potential risks in quantitative and
qualitative manner. The core knowledge of dust concentration,
behavior and complex properties of particulate matter helps to
formulate the methods and policies to exert control on their
emission and distribution.
The natural as well as artificial lakes, the source of ground
water in Southern region of Katraj, are subjected to the
deposition of heavy suspended particulate matter. Through
experimentation, it has been observed that the deposition of such
dust matter in the local atmosphere has led to significant changes
in the physical, chemical and biological parameters relating to
natural resources as it reflects in the alarming deviation of these
parameters from standard values. The present study will create
awareness and save the environment of Katraj from impending
consequences of dust particle emission
Evaluation of mechanical properties and
metallurgical changes, which occur in AISI 431 martensitic
stainless steel as a result of the welding processes consisting of
electron beam welding (fusion welding) and friction welding
(solid state welding) is carried out. In addition, the influence of
post weld heat treatments on microstructure and mechanical
properties has also been investigated. Weld center in EB welding
exhibited a cast dendritic structure with ferrite network in a
matrix of un-tempered martensite. In friction welding, the weld
center exhibited thermo-mechanical effected structure consists of
fine intragranular acicular martensite in equiaxed prior austenite
grains. In both the welding processes, post weld tempering
treatment resulted in coarsening of the martensite which
increases with increase in tempering temperature. In the as-weld
condition, both EB and Friction welds exhibited high strength
and hardness and poor impact toughness. Increase in impact
toughness and decrease in strength and hardness is observed with
an increase in tempering temperature. However, high strength
and hardness observed in friction welds as compared to EB
welds, which may be due to fine grain size of the welds due to
thermo-mechanical work the weld undergoes during welding.
Low impact toughness is observed in friction welds as compared
to EB welds, due to presence of fine grained martensite.
Noise pollution in vadodara city a case study-35861EditorIJAERD
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This document summarizes a case study on noise pollution in Vadodara City, India. It measures noise levels at 20 major locations in the city between 9am-11am, 1pm-3pm, and 5pm-7pm using a sound level meter. The highest average noise levels were recorded at Sangam Circle (78.87 dB), MSU (77.16 dB), and OP Road (77.03 dB). Traffic noise was found to be the main source of noise pollution. The document concludes by stating objectives to study existing noise levels in the area and identify suitable mitigation measures.
IRJET- Effect of Noise on Human Psychology in Public Spaces of Dhaka CityIRJET Journal
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The document discusses the effects of noise pollution on human psychology in public spaces in Dhaka, Bangladesh. It measures noise levels at five public locations and interviews people at each location about the psychological impacts of noise. The study finds that noise from vehicles, crowds, and hawkers causes health issues like headaches and stress responses. Extreme noise is linked to problems like irritation, anxiety, and sleep disturbances. The busiest locations of Farmgate and Mirpur 10 have the highest noise levels and most reported psychological effects.
1) The study measured air pollution levels over two years in residential areas in and around Tirupati, India, a popular pilgrimage site that sees over 1 million visitors monthly.
2) Suspended particulate matter (SPM) and respirable particulate matter (PM10) violated national air quality standards, while carbon monoxide levels approached the limit. Sulfur dioxide and nitrogen oxides were within standards.
3) Peak pollution occurred in spring and winter. Summer pollution levels exceeded monsoon and winter levels for most pollutants, influenced both by local factors and meteorology. Overall pollutant levels correlated with each other and with meteorological parameters.
This document discusses environmental pollution, development, degradation, and urbanization in the context of Bangladesh. It defines environmental pollution as damage to ecosystems from human activities consuming resources faster than nature can replenish them. The major types of pollution are described as air, water, land, and noise. Air pollution occurs from vehicle and industrial emissions. Water pollution comes from industrial waste disposal and runoff. Land pollution results from overexploitation and chemical disposal. Development leads to degradation through urbanization and industrialization which transform lands and emit greenhouse gases.
ASSESSMENT OF NOISE POLLUTION IN GOPALGANJ CITYMichele Thomas
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Traffic noise is a significant source of noise pollution in Gopalganj city, Bangladesh. Noise levels were measured from 9-10 AM at Launchghat using a sound level meter. All sound levels exceeded the standard of 50 dBA for a mixed area, ranging from 68.5-90.7 dBA. The noise pollution level was calculated to be 90.7 dBA, indicating high noise pollution from traffic in the area during morning hours. Recommendations to decrease noise pollution include restricting heavy vehicles during work hours and improving traffic conditions.
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Thesis irfan BY Muhammad Fahad Ansari 12IEEM14fahadansari131
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Traffic Noise Pollution and Its Health Implications on Humans: A ReviewIRJET Journal
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This document reviews literature on the health implications of traffic noise pollution on humans. It discusses how traffic noise can cause physical and psychological health effects such as hearing loss, headaches, high blood pressure, and mental health disorders. Questionnaire surveys have found that road traffic is a major source of noise pollution in cities and it highly annoys respondents. Studies show noise exposure is linked to sleep disruption, lack of focus, and small reductions in birth weight. The literature review covers various studies that have measured noise levels in cities and investigated its relationship with health impacts and annoyance. Overall, the review finds that traffic noise poses significant health risks and that laws need proper enforcement to control this growing issue.
Road Traffic Noise Level Assessment at an Institutional AreaIJERA Editor
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Unplanned and rapid urbanization, industrialization, increasing number of vehicles, poor traffic management, poor road condition etc. are the major causes of higher noise levels in most of the Indian cities. Prolonged exposure to higher noise levels can lead to irreversible Noise Induced Hearing Loss (NIHL). Noise-induced hearing loss is contributing one-third to the total persons suffering from hearing loss in every country in the world. The present study aims at measuring the noise levels in the university campus to analyze the current situation and suggesting noise control measures to be adopted in University campus and along MMA Jauhar Marg. The numbers of vehicles were counted during November 17-21, 2012 and noise levels were measured at various pre decided locations. The traffic load in horizon years 2013, 2017, 2022, 2027 and 2032 on the MMA Jauhar Marg Road is predicted on the basis of observed traffic data and expected annual growth rate as 8.0% for pre Metro and 3.5% for post Metro. The noise levels were measured using Larson Davis Model 831 Class 1 Sound Level Meter on both sides of road at foot paths along MMA Jauhar Marg and at various receptor locations inside the different buildings in the university campus. Model RLS-90 is used for prediction of noise levels. The prediction of metro noise is carried out using statistical calculations. The combined noise levels were compared with standard criteria for silent zone and found on higher side. Installation of environment noise barrier is suggested as one of the noise control measure to be adopted along MMA Jauhar Marg and along metro viaduct to save students and staff from exposure of higher noise levels.
This document analyzes highway air pollution in Chennai, India. It aims to quantify the total number of vehicles, estimate road traffic and pollution loads, and compare measured and predicted carbon monoxide concentrations. The study finds that traffic is growing rapidly in Indian cities, leading to increased air pollution from vehicle exhaust. It measures ambient levels of pollutants like CO, HC, NOx, SO2 and SPM at various locations. The CALINE 4 model is used to predict CO concentrations, which are then statistically compared to observed values. The results help assess the impact of vehicular emissions on air quality and inform pollution management efforts.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Pollution Due To Noise from Selected PlacesIOSR Journals
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Noise pollution degrades environment and also causes health hazard to human beings. In urban areas major sources of noise pollution are traffic and construction activities. Available guide lines for noise pollution have been reviewed in the paper. Measurement of noise levels at selected locations reported in the paper, for example, railway stations, use of machinery at construction sites, etc., was made and compared with the guide line values. It has been observed that the noise level at all locations exceeds the value prescribed by the competent authorities. At the pedestrian locations the noise level is 60 dB to 110 dB. At the railway crossing the noise level is 45 dB to 110 dB. The above inference shows that the noise pollution is paramount at all sources. Due to the various adverse impacts of noise on humans and environment, noise should be controlled. The conclusion drawn from this study is that the technique or the combination of techniques to be employed for noise control depends upon the extent of the noise reduction required, nature of the equipment used and the economy aspects of the available techniques
Noise pollution a case studies In Agartala municipal councilTripura university
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This document discusses noise pollution in Agartala, India. It assesses noise levels at 19 locations in the city classified as residential, commercial, industrial, and silent zones. The highest daytime noise level of 63.79 dB(A) was found in a residential area, exceeding the limit of 55 dB(A), while the lowest of 54.98 dB(A) also exceeded limits. Commercial zones exceeded both day and night limits. Sources of noise pollution discussed include industrial activities, vehicles, household appliances, and public address systems. The document analyzes noise trends and effects on health.
IRJET- Assessment of Noise Pollution in Commercial and Residential Areas and ...IRJET Journal
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This document summarizes 7 research papers and 2 reports on noise pollution in India. The key findings are:
1) Noise levels exceeded standards in residential, commercial, and industrial areas of cities studied due to increasing population, vehicles, and industrial activities.
2) Noise pollution adversely impacts human health, causing hearing loss, sleep disturbances, and other health issues.
3) Major sources of noise pollution identified are vehicles, construction, industrial activities, and public address systems.
4) Studies found increasing noise levels over time as urbanization increased. Control measures like limits, afforestation, and maintenance of vehicles are needed to reduce noise pollution.
11.eco toxicological risk assessment of hch, ddt and their possible sources b...Alexander Decker
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11.environmental noise pollution monitoring and impacts on
1. Civil and Environmental Research www.iiste.org
ISSN 2224-5790 (Print) ISSN 2225-0514 (Online)
Vol 1, No.1, 2011
Environmental Noise Pollution Monitoring and Impacts On
Human Health in Dehradun City, Uttarakhand, India.
Dev Pramendra (Corresponding author)
School of Studies in Earth Science, Vikram University
Dewas Road, Ujjain, M. P. 456010, India
Tel: 91-9407 131514 E-mail: drpdev@yahoo.com
Singh Vartika
School of Studies in Earth Science, Vikram University
Dewas Road, Ujjain, M. P. 456010, India
Email: vartika_vartu@yahoo.co.in
Abstract
Noise pollution monitoring and environmental impacts on human health in Dehradun City of India are
discussed. Major source of noise pollution includes transportation and frequent use of horn in vehicles.
Dehradun is at a cross road and prominent national institutions like Survey of India, Oil and Natural Gas
Corporation, Forest Research Institute, Indian Military Academy, Indian Institute of Remote Sensing,
Wadia Institute of Himalayan Geology, Central and State Government offices are changing Dehradun into a
busy, economically active vibrant city. Noise pollution levels (50.70 – 82.54 dB) more than recommended
permissible limits (30 -75 dB) are observed in the Survey Chock, Prince Chock, Saharanpur Chock, Gandhi
Park and Clock Tower. Exposure to high level of noise cause stress on human health such as auditory,
nervous system, insomnia, hearing loss, reducing efficiency, sexual impotency, cardio-vascular, respiratory,
neurological damages and limiting the human life. The execution of an appropriate management strategy
for limiting noise pollution on affected sites is recommended.
Keywords: Environmental monitoring, Noise pollution, Human health, Dehradun, Uttarakhand, India.
1. Introduction
Environment has been described as that surrounds an individual or community, including both the physical
and cultural surroundings. It is also sometimes used to designate a certain set of the circumstances
surrounding a particular occurrence for example, environment of the deposition (Keller, 1976). According
to Coates (1981) the environmental geology is a mission oriented and problem solving discipline.Valdiya
(1987) remarked that the geologist plays a very crucial role in understanding, preserving, ameliorating and
restoring the natural environment, and considered that environmental geology is an integrated application
of geology for the benefit of man and his living and inanimate world.
The natural environment is one of the most valued elements of Dehradun city, being placed in the attractive
Doon Valley that is having the Himalayas to its north, the Shivalik range to its south, the sacred river Ganga
to its east and the river Yamuna to its west. Dehradun area (latitudes 30° 15' to 30° 30' N; longitudes 78° 00'
to 78° 15' E; Survey of India, toposheet no. 53J/3) is surrounded by river Song on the east, river Tons on the
west, Himalayan ranges on the north and Sal forests in the south. Dehradun is bordered by dense forest all
around and number of streams and canals dissect the city in the north-south direction. The high hills in the
east and north and Shivalik in the south present an interesting topographical setting to the city. All the hill
ranges around Dehradun are rich in limestone reserves. The demands and challenges of development and
preservation of its rich natural environment require to be met concurrently. The present environmental
pollution problems are universal in almost all the countries. Road traffic, jet planes, garbage trucks,
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construction equipment, manufacturing processes, and lawn movers are some of the major sources of this
unwanted sound that are routinely transmitted in to the air (Birgitta & Lindvall, 1995). All these problems
are resulting as a consequence of rapid growth of population, self centered human mentality, fast life style,
no of vehicles, use of large number of instruments in daily life, excessive exploitation of natural resources,
rapid rate of urbanization and industrialization. In the present scenario, noise is becoming an increasingly
source of discomfort and danger in the vicinity of Dehradun city.
1.1 Concept of noise pollution
The simple expression of term noise is an unnecessary sound and important form of energy, which is
emitted by a vibrating body and on reaching the ear causes sensation of hearing through nervous system.
The noise generally consists of three inter-related elements - the source, receiver and transmission path
followed by the noise to reach receiver. This transmission path is usually the atmosphere through which
sound is propagated, but can include structural materials of any building containing the receiver.
Discrimination and differentiation between sound and noise also depends upon the habit and interest of the
person or species receiving it, the ambient conditions and impact of the sound generated during that
particular duration of time. Singh & Davar, (2004) explained that the noise is an unwanted sound that may
cause some psychological and physical stress to the living and non-living objects exposed to it.
At present, noise pollution is considered as one of the key problems of urban communities that has
numerous hazardous effects on the urban environment and may result in a great deal of costs on the society
(Martin et al., 2006; Chien & Shih, 2007).). Gangwar (2006) described that the increasing number of
vehicles, musical instruments, small scale industries, urbanization and human activities are the main
sources of noise pollution. Traffic noise levels increase with increasing density of traffic related with the
traffic composition, the road slope, width, and surface structure distance to crossroad (Williams & McCrae,
1995). Important factors affecting noise values are continuity of the city centre traffic, and the dimension,
position, and surface materials of roads with city centre crossroad signal system (Tang & Tong, 2004).
Traffic can be considered as the major source of noise pollution in large cities (Jamarah et al., 2006;
Murthy et al., 2007; Omidvari & Nouri, 2009).
Hence, the term Noise refers to a sound without agreeable musical quality or as an unwanted or undesired
sound. Noise is no less a pollutant than the toxic chemicals in the environment. As a result of increasing
mechanization, the use of increasingly voluminous and complicated machinery, equipment and the stepping
up of the pace of production, the noise is becoming an increasingly widespread and serious source of
discomfort and danger (Singh & Dev, 2010).
The noise is commonly measured as sound intensity that is determined in terms of the pressure of sound
waves on the eardrums, and the scale is logarithmic. Loudness of sound corresponds to the degree of
sensation depending on the intensity of sound and sensitivity of ear (Garg et.al., 2007). The unit of sound
intensity measurement is decibel (dB) and each decibel rise depicts ten-fold increase in sound intensity. The
permissible noise tolerance levels are displayed (Table 1). Noise is causing environmental pollution as well
as human health hazards.
2. Noise pollution analysis
Deharadun city is facing noise pollution majorly because of being the capital of Uttarakhand state, where
several major goverement offices and people have shifted, good job opportunities and facilities are
available and hence peolple intend to prefer to reside here, which create extra pressure on the
environmental scenario of the city. In order to realize concrete reasons of the noise pollution in Deharadun
city, it is necessary to study the road network, transport system, escalating number of vehicles and rising
rate of population growth that plays a vital role in the physical, social and economical development of the
city.
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2.1Increase in population and vehicles
Dehradun is one of the most important city and capital of new born state of Uttaranchal and is situated at
the nodal point of roads connecting it to the other part of the country. Geographically the valley lies
between latitude 29° 55’N and 38° 30’N, longitude 77° 35’E and 78° 20’E covering an area of about 3088
sq. km, with a population of 12, 82,143 (2001 census). The grim situation of tremendous increase in
number of vehicles is generating multiple problems such as encroachment, poor parking facilities, poor
condition of roads, no control system of passing heavy traffic through the city, no facility of bypass or
flyovers connecting the main roads from border of the city. Therefore, traffic has to bear the load of local
traffic as well as heavy traffic passing through the core of city without concern (Singh & Dev, 2010). In the
past, Dehradun city was having slow moving traffic namely the bicycles, rickshaws etc., but at present, the
senario has totaly changed, and city traffic is mainly occupied by the heavy vehicles, motor-cycles, vikram
(type of auto-mobile), cars and others generating the noise pollution.
2.2 Road network
The road network of the Dehradun city has been categorized into three types: (1) Zonal and inter-zonal
roads, (2) Main city roads, and (3) Local roads. In the present effort, the noise pollution data have been
recorded in the silence zone, residential zone and commercial zone of Dehradun city during the period from
2008 to 2010. The noise data have been measured with the help of D. B. Meter and are displayed herein
(Table 2, Figure 1).
2.3 Effects of noise pollution
Noise causes significant impact on the quality of life and health ailments, such as cardiovascular
tribulations, hypertension, increased levels of diabetes, changes in social behavior and induces the
depressive tendencies. The disorders of human, animal and plant bodies due to the noise pollution are
described in the following lines:
Human Efficiency - Regarding the impact of noise on human efficiency there are number of experiments,
which shows that the human efficiency increases with noise reduction.
Lack of concentration - For better quality of work there should be concentration, Noise causes lack of
concentration. Mostly all the offices are on main road and the noise of traffic or the loud speakers of diverse
types of horns, divert attention of people working in the offices.
Memory loss - The effects of excessive noise could be so severe that either there is a permanent loss of
memory or a psychiatric disorder (Bond, 1996).
Fatigue - Because of noise pollution, people cannot concentrate on their work. Hence they spent more time
for completing the work and they experience exhaustion.
Digestion problem - The digestion, stomach contractions, flow of saliva and gastric juices all stop proper
working due to the high frequency of noise, because the changes are so marked, repeated exposure to
astonishing noise should be kept to a minimum (Broadbent, 1957).
Abortion crisis - There should be cool and calm atmosphere during the pregnancy. The unpleasant sounds
create a lady to be of irritative nature. Sudden noise causes the abortion.
Blood pressure problem - Noise pollution causes certain diseases in human sue to traffic noise such as the
headache, high blood pressure and other stresses among the exposed individuals in adjoining working
places in Varanasi City (Pathak et al., 2008).
Deafness disaster - The effect of noise on audition is well recognized. Mechanics, locomotive drivers,
telephone operators etc., all have their hearing impairment as a result of noise at the place of work.
Physicians and psychologists are of the view that sustained exposure to noise level above 80 to 100 dB is
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risky and thunderous noise causes temporary or permanent deafness.
Hypertension - Relatively low level of noise affects human health adversely and it may cause hypertension,
disrupt sleep and or hinder cognitive development in children (Kiernan, 1997).
Animals - Noise pollution damage the nervous system of animals. They lose control of the mind and may
become dangerous.
Plants - Noise pollution causes poor quality of crops even in a pleasant atmosphere.
3. Conclusion
This research paper elucidates the levels of noise pollution in different zones in Dehradun city. The
measurements of noise levels have been recorded at the different Silence, Residential and Commercial
zones of the city. The analysis has revealed that noise pollution levels are rather higher than prescribed
Indian Standards at all the examined sites. such as Survey Chock, Clock Tower and Prince Clock. It is
evident from the noise data analysis (Table, 3; Figure 5) that during the months of September to March,
noise pollution of the Dehradun city is higher than in comprasion to other months of the year. This could
be due to celebrations of the festivals and marriges during this period. It is not possible to impose a ban on
the celebrations in the society, however, the use of higer frequency loud speekars should be allowed for
specified period only.
Suggested that frequent use of the vikram may be prohibited principally in the city area, because horn
and music from autoriksha or vikram generate noise as well as air pollution. Implementation of a
scheme for plantation of trees and buffer zones must be shaped in diverse parts of the city. People can
be consistently educated through news papers, magzines, radios, televisions, and exhibiting adds in
cinema halls relating to reduce noise pollution. The regular monitoring of pollution, proper
maintenance of vehicles, ban on use of old vehicles, plantation, widening of roads and public
awareness are the most vital, and essential measures to be implemented in order to improve present
status of environmental entity in the Dehradun City
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Kiernan, V. (1997), “Noise Pollution Robs Kids of languages Skills. New Scientist, 10 May 1997, 5.
Martin, M.A., Tarrero, M.A., Gonzaler,A., & Machimbarrena, M. (2006), “Exposure Effect Relationships,
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Pathak., V., Tripathi., B.D., & Mishra., V. K. (2008), “Evaluation of Traffic Noise Pollution & Attitudes of
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Singh, N. & Davar, S.C. (2004), “Noise Pollution - Sources, Effects and Control”, Journal of Human
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Singh.,V. & Dev, P. (2010), “Environmental Impact of Noise Pollution, A Case Study in Ssaharanpur City,
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Figure 1: Noise pollution data of Dehradun city, during 2008 – 2010.
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Figure: 2 Noise pollution data of silence zone, Dehradun city, during 2008 – 2010.
Figure: 3 Noise pollution data of residential zone, Dehradun city, during 2008 – 2010.
Figure: 4 Noise pollution data of commercial zone, Dehradun city, during 2008-2010.
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Figure: 5 Averege noise growth trend month wise, of Dehradun city, during 2008-2010.
Table 1: Permissible Limits of Noise Levels Laid by Central Pollution Control Board.
Area/ Category of Area Limits in dB(A) Leq Limits in dB(A) Leq
Zone / Zone Day Time Night Time
(from 6.00 a.m. to 10.00 (from 10.00 p.m. to 6.00
p.m.) a.m.)
(A) Industrial Area 75 70
(B) Commercial Area 65 55
(C) Residential Area 55 45
(D) Silence Zone 50 40
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Table 2: Measurements of Average Noise Levels in Dehradun City, Uttarakhand, India .(Values are
expressed in unit dB)
Silence Zone Residential Zone Commercial Zone
Year
Gandhi Park Doon Hospital Race Course Rajpura Survey Chock Clock Tower
2008 55.27 58.49 64.35 63.16 74.57 82.54
2009 56.94 59.79 53.89 56.64 67.53 78.13
2010 62.89 61.78 60.46 61.97 71.52 79.91
Table : 3 Average noise growth trend month wise during 2008-2010
S.No. Month Average Noise Data
1 January 67.375
2 February 66.42
3 March 67.87
4 April 63.98
5 May 63.81
6 June 62.38
7 July 62.52
8 August 62.45
9 September 64.57
10 October 61.5
11 November 61.42
12 December 64.65
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