Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Collection of sewage & estimation of its dischargeRajdip Bhdaraka
This document provides an overview of wastewater and sewerage systems. It defines wastewater as water used in homes, commercial spaces, and industries that needs treatment and disposal. Effective wastewater collection is important to prevent unhygienic conditions. The document then describes the components of typical sewerage systems and different types of sewer pipes used, including their characteristics and suitable applications. It also discusses factors that affect wastewater flow estimation and formulas used to calculate peak storm discharge in sewer design.
This presentation includes the estimation of storm sewage generated as a result of storm/rainfall events. It includes the detailed usage of rational formula for quantity estimation with solved examples.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants. Most industrial processes, such as petroleum refineries, chemical and petrochemical plants have their own specialized facilities to treat their wastewaters so that the pollutant concentrations in the treated wastewater comply with the regulations regarding disposal of wastewaters into sewers or into rivers, lakes or oceans.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
The document discusses various types of sedimentation tanks and filters used in water treatment. It describes quiescent sedimentation tanks, continuous sedimentation tanks including horizontal and vertical flow types. It also discusses the process of sedimentation with coagulation including methods of coagulant feeding, mixing and flocculation. Slow sand filters and rapid sand filters are described and compared. Pressure filters are also introduced. The document covers various steps in water treatment like disinfection using chlorination and water softening methods.
This document discusses methods for disposing of treated sewage effluents. It describes natural methods like dilution disposal into water bodies, and disposal on land. It also describes artificial treatment methods before disposal. Key points covered include standards for dilution disposal, factors favoring dilution disposal, types of receiving waters, and the processes involved in the self-purification of natural streams.
Collection of sewage & estimation of its dischargeRajdip Bhdaraka
This document provides an overview of wastewater and sewerage systems. It defines wastewater as water used in homes, commercial spaces, and industries that needs treatment and disposal. Effective wastewater collection is important to prevent unhygienic conditions. The document then describes the components of typical sewerage systems and different types of sewer pipes used, including their characteristics and suitable applications. It also discusses factors that affect wastewater flow estimation and formulas used to calculate peak storm discharge in sewer design.
This presentation includes the estimation of storm sewage generated as a result of storm/rainfall events. It includes the detailed usage of rational formula for quantity estimation with solved examples.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants. Most industrial processes, such as petroleum refineries, chemical and petrochemical plants have their own specialized facilities to treat their wastewaters so that the pollutant concentrations in the treated wastewater comply with the regulations regarding disposal of wastewaters into sewers or into rivers, lakes or oceans.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
The document discusses various types of sedimentation tanks and filters used in water treatment. It describes quiescent sedimentation tanks, continuous sedimentation tanks including horizontal and vertical flow types. It also discusses the process of sedimentation with coagulation including methods of coagulant feeding, mixing and flocculation. Slow sand filters and rapid sand filters are described and compared. Pressure filters are also introduced. The document covers various steps in water treatment like disinfection using chlorination and water softening methods.
This document discusses methods for disposing of treated sewage effluents. It describes natural methods like dilution disposal into water bodies, and disposal on land. It also describes artificial treatment methods before disposal. Key points covered include standards for dilution disposal, factors favoring dilution disposal, types of receiving waters, and the processes involved in the self-purification of natural streams.
This presentation discusses water demand and population forecasting methods. It defines water demand as the rate of water required for a town or city to carry out daily activities. There are different types of water demand including domestic, industrial, institutional, and fire demand. Population is a key factor in determining water demand, and there are several methods discussed for forecasting future population, including arithmetical increase, geometrical increase, and incremental increase methods. The presentation provides details on each of these population forecasting techniques.
This document provides information on the characteristics of wastewater and sewage. It defines key terms like wastewater, sewage, sullage, and discusses the necessity of sewage treatment. It describes the composition of sewage, including water, pathogens, organic particles, and inorganic particles. It also covers the physical, chemical and biological characteristics of sewage. The physical characteristics discussed are color, odor, temperature and turbidity. The chemical characteristics covered include solids, pH, nitrogen content, BOD, COD and population equivalent. The document also discusses the aerobic and anaerobic decomposition of sewage and the BOD test and curve.
Here you will get all information about sewer design, its type & various tests carried out on it for any leakage or any obstruction present and of improper joints.
Reservoir sedimentation & its controlZahinRana
This document discusses reservoir sedimentation and its control. It begins with an introduction that defines a reservoir as an enlarged natural or artificial lake or pond created by a dam to store water. It then explains that reservoirs experience sedimentation as rivers carry sediment from erosion that is deposited in the reservoir, reducing its storage capacity over time. The document outlines the types of sediment as suspended or bed load. It lists the causes of sedimentation as the nature of catchment soils, vegetation cover, topography, rainfall intensity and land cultivation. Finally, it discusses methods to control sedimentation such as proper design, sediment control structures, and sediment removal.
This document provides information on various steps involved in sewer design and laying, including:
1) Detailed mapping and marking of the pipe line route, center line, and offset line is required before excavation.
2) Trenches are excavated according to the pipe diameter and depth, and timbering is used for trench stability when depths exceed 2m.
3) The trench bottom is shaped to the design invert level and dewatering is done if needed.
4) Pipes are laid from the lowest point with sockets upstream and joints are made with lead caulking or cement mortar. Testing ensures no leaks or obstructions, and backfilling is done in layers after completion.
This document summarizes different types of sludge treatment processes. It discusses aerobic and anaerobic digestion. Aerobic digestion occurs in the presence of oxygen and is used for secondary sludge. Anaerobic digestion occurs without oxygen and reduces sludge volume by 1/3 by converting it to gases, acids and alcohols. The document also describes factors affecting digestion like temperature and pH, types of sludge digestors like standard rate and high rate digestors, gas production from sludge, and moisture content of raw and treated sludge.
The document provides information on different types of intake structures used for collecting surface water. It discusses wet and dry intake towers, as well as submerged and exposed intakes. Trash racks are described as screens used to prevent debris from entering intake structures. Twin well river intake structures are also summarized, which typically include an inlet well, intake pipe, and jack well to lift water from the river to the treatment plant.
This document discusses various sewer appurtenances including manholes, shallow manholes, deep manholes, drop manholes, lamp holes, clean outs, street inlets, horizontal inlets, flushing tanks, automatic flushing tanks, grease and oil traps, sand grease and oil traps, inverted siphons, and storm water regulators. Manholes provide access to sewer lines and come in different depths depending on their location and purpose. Other appurtenances like drop manholes, lamp holes, and clean outs aid in accessing and maintaining sewer systems. Flushing tanks, traps, and regulators help manage waste, debris, and water flow within sewer infrastructure.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
The document discusses the design and construction of sewers. It outlines the objectives, which are to understand sewer design procedures, types of sewers, materials used, and construction. It covers sewer shapes, design criteria including discharge, velocity, size and grades. Hydraulic formulae and elements for circular and partially full sewers are provided. Common sewer materials like concrete, steel, plastic, vitrified clay and their properties are described.
Design and Construction of Sewers And Sewer AppurtenancesTulsiram Bhattarai
The document provides information about sewer systems in Nepal. It discusses the historical development of sewage systems in Nepal from the 1920s to present day. It outlines the objectives of understanding sewer types, design criteria, construction, and appurtenances. The document describes various sewer shapes including circular, rectangular, egg-shaped, and others. It covers design criteria such as sewage flow calculations, velocity, gradient, and materials. Common sewer materials like concrete, brick, cast iron are explained. The importance of manholes and other appurtenances for maintenance and inspection is highlighted.
Diversion headworks are structures constructed at the head of a canal to divert river water into the canal. They include components like weirs, barrages, canal head regulators, divide walls, fish ladders, and guide banks. The objectives are to raise water levels, control silt entry, regulate water flow, and allow fish passage. Proper site selection and design are needed to prevent failures from subsurface water flow, uplift pressure, hydraulic jumps, or scouring during floods. Remedies include increasing seepage lengths, adding sheet piles, and using thicker impervious floors.
The document discusses self-purification of streams, where wastewater discharged into rivers and streams is naturally purified over distance as organic matter is broken down and dissolved oxygen levels increase. It explains that biochemical oxygen demand initially increases and dissolved oxygen decreases near discharge points, but that over distance bacterial action reduces organic matter and increases oxygen saturation. Various natural processes involved in self-purification are dilution, dispersion, sedimentation, oxidation, reduction, temperature, and sunlight.
This document discusses various types of pipe joints used in water supply systems. It describes bell and spigot joints, expansion joints, flanged joints, mechanical joints, flexible joints, screwed joints, collar joints, and A.C. pipe joints. For each type of joint it provides details on the purpose, construction, and materials used. The document also covers topics like pipe laying works, testing of pipe lines, hydraulic design of pipe networks, and appurtenances in pipe lines.
Cross drainage works are structures constructed where canals cross natural drainages like rivers or streams. There are several types of cross drainage works depending on the relative bed levels of the canal and drainage. The document discusses determining the maximum flood discharge of a drainage using various empirical formulas and methods. It also covers topics like fluming of canals, which involves contracting the canal width to reduce the size of cross drainage structures.
Present slideshow provides brief introductory part of various Intake Structures. This is useful for Environmental Engineering Students, faculties and learners.
This document discusses different types of earth and rockfill dams. It describes rolled fill dams which are constructed by compacting soil in thin layers. Homogeneous dams consist of a single material throughout while zoned dams have distinct core, shell, and filter zones. Diaphragm dams contain an impervious core like a thin wall. Key elements of earth dam design include the top width, freeboard, slopes, central core, and downstream drainage system.
Sedimentation is an effective techniques involved for treatment of waste water . Various sedimentation techniques are employed world wide for the purpose.
Plain sedimentation is the simplest technique involving quiescent settling or storage of water, such as would take place in a reservoir, lake, or basin, without the aid of chemicals, preferably for a month or longer, particularly if the source water is a sewage-polluted river water.
This presentation covers various plain sedimentation tanks & design considerations of the same .
If you like it ,Please press the thumb up button & donot forget to give your feedback in comments section, it would be extremely valuable . Any query ? Feel free to post in comments section. All the best ! Enjoy !
The dairy industry generates large quantities of wastewater from various processing plants. Sources of wastewater include bottling, cheese making, butter, condensed milk, ghee, milk powder, and ice cream plants. Dairy waste is biodegradable but strong in nature. It has high levels of BOD, COD, total solids, oil and grease. Treatment alternatives for dairy waste include use for irrigation after primary treatment, low-cost treatment using screens and stabilization ponds, and advanced secondary treatment using activated sludge process.
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
This presentation discusses water demand and population forecasting methods. It defines water demand as the rate of water required for a town or city to carry out daily activities. There are different types of water demand including domestic, industrial, institutional, and fire demand. Population is a key factor in determining water demand, and there are several methods discussed for forecasting future population, including arithmetical increase, geometrical increase, and incremental increase methods. The presentation provides details on each of these population forecasting techniques.
This document provides information on the characteristics of wastewater and sewage. It defines key terms like wastewater, sewage, sullage, and discusses the necessity of sewage treatment. It describes the composition of sewage, including water, pathogens, organic particles, and inorganic particles. It also covers the physical, chemical and biological characteristics of sewage. The physical characteristics discussed are color, odor, temperature and turbidity. The chemical characteristics covered include solids, pH, nitrogen content, BOD, COD and population equivalent. The document also discusses the aerobic and anaerobic decomposition of sewage and the BOD test and curve.
Here you will get all information about sewer design, its type & various tests carried out on it for any leakage or any obstruction present and of improper joints.
Reservoir sedimentation & its controlZahinRana
This document discusses reservoir sedimentation and its control. It begins with an introduction that defines a reservoir as an enlarged natural or artificial lake or pond created by a dam to store water. It then explains that reservoirs experience sedimentation as rivers carry sediment from erosion that is deposited in the reservoir, reducing its storage capacity over time. The document outlines the types of sediment as suspended or bed load. It lists the causes of sedimentation as the nature of catchment soils, vegetation cover, topography, rainfall intensity and land cultivation. Finally, it discusses methods to control sedimentation such as proper design, sediment control structures, and sediment removal.
This document provides information on various steps involved in sewer design and laying, including:
1) Detailed mapping and marking of the pipe line route, center line, and offset line is required before excavation.
2) Trenches are excavated according to the pipe diameter and depth, and timbering is used for trench stability when depths exceed 2m.
3) The trench bottom is shaped to the design invert level and dewatering is done if needed.
4) Pipes are laid from the lowest point with sockets upstream and joints are made with lead caulking or cement mortar. Testing ensures no leaks or obstructions, and backfilling is done in layers after completion.
This document summarizes different types of sludge treatment processes. It discusses aerobic and anaerobic digestion. Aerobic digestion occurs in the presence of oxygen and is used for secondary sludge. Anaerobic digestion occurs without oxygen and reduces sludge volume by 1/3 by converting it to gases, acids and alcohols. The document also describes factors affecting digestion like temperature and pH, types of sludge digestors like standard rate and high rate digestors, gas production from sludge, and moisture content of raw and treated sludge.
The document provides information on different types of intake structures used for collecting surface water. It discusses wet and dry intake towers, as well as submerged and exposed intakes. Trash racks are described as screens used to prevent debris from entering intake structures. Twin well river intake structures are also summarized, which typically include an inlet well, intake pipe, and jack well to lift water from the river to the treatment plant.
This document discusses various sewer appurtenances including manholes, shallow manholes, deep manholes, drop manholes, lamp holes, clean outs, street inlets, horizontal inlets, flushing tanks, automatic flushing tanks, grease and oil traps, sand grease and oil traps, inverted siphons, and storm water regulators. Manholes provide access to sewer lines and come in different depths depending on their location and purpose. Other appurtenances like drop manholes, lamp holes, and clean outs aid in accessing and maintaining sewer systems. Flushing tanks, traps, and regulators help manage waste, debris, and water flow within sewer infrastructure.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
The document discusses the design and construction of sewers. It outlines the objectives, which are to understand sewer design procedures, types of sewers, materials used, and construction. It covers sewer shapes, design criteria including discharge, velocity, size and grades. Hydraulic formulae and elements for circular and partially full sewers are provided. Common sewer materials like concrete, steel, plastic, vitrified clay and their properties are described.
Design and Construction of Sewers And Sewer AppurtenancesTulsiram Bhattarai
The document provides information about sewer systems in Nepal. It discusses the historical development of sewage systems in Nepal from the 1920s to present day. It outlines the objectives of understanding sewer types, design criteria, construction, and appurtenances. The document describes various sewer shapes including circular, rectangular, egg-shaped, and others. It covers design criteria such as sewage flow calculations, velocity, gradient, and materials. Common sewer materials like concrete, brick, cast iron are explained. The importance of manholes and other appurtenances for maintenance and inspection is highlighted.
Diversion headworks are structures constructed at the head of a canal to divert river water into the canal. They include components like weirs, barrages, canal head regulators, divide walls, fish ladders, and guide banks. The objectives are to raise water levels, control silt entry, regulate water flow, and allow fish passage. Proper site selection and design are needed to prevent failures from subsurface water flow, uplift pressure, hydraulic jumps, or scouring during floods. Remedies include increasing seepage lengths, adding sheet piles, and using thicker impervious floors.
The document discusses self-purification of streams, where wastewater discharged into rivers and streams is naturally purified over distance as organic matter is broken down and dissolved oxygen levels increase. It explains that biochemical oxygen demand initially increases and dissolved oxygen decreases near discharge points, but that over distance bacterial action reduces organic matter and increases oxygen saturation. Various natural processes involved in self-purification are dilution, dispersion, sedimentation, oxidation, reduction, temperature, and sunlight.
This document discusses various types of pipe joints used in water supply systems. It describes bell and spigot joints, expansion joints, flanged joints, mechanical joints, flexible joints, screwed joints, collar joints, and A.C. pipe joints. For each type of joint it provides details on the purpose, construction, and materials used. The document also covers topics like pipe laying works, testing of pipe lines, hydraulic design of pipe networks, and appurtenances in pipe lines.
Cross drainage works are structures constructed where canals cross natural drainages like rivers or streams. There are several types of cross drainage works depending on the relative bed levels of the canal and drainage. The document discusses determining the maximum flood discharge of a drainage using various empirical formulas and methods. It also covers topics like fluming of canals, which involves contracting the canal width to reduce the size of cross drainage structures.
Present slideshow provides brief introductory part of various Intake Structures. This is useful for Environmental Engineering Students, faculties and learners.
This document discusses different types of earth and rockfill dams. It describes rolled fill dams which are constructed by compacting soil in thin layers. Homogeneous dams consist of a single material throughout while zoned dams have distinct core, shell, and filter zones. Diaphragm dams contain an impervious core like a thin wall. Key elements of earth dam design include the top width, freeboard, slopes, central core, and downstream drainage system.
Sedimentation is an effective techniques involved for treatment of waste water . Various sedimentation techniques are employed world wide for the purpose.
Plain sedimentation is the simplest technique involving quiescent settling or storage of water, such as would take place in a reservoir, lake, or basin, without the aid of chemicals, preferably for a month or longer, particularly if the source water is a sewage-polluted river water.
This presentation covers various plain sedimentation tanks & design considerations of the same .
If you like it ,Please press the thumb up button & donot forget to give your feedback in comments section, it would be extremely valuable . Any query ? Feel free to post in comments section. All the best ! Enjoy !
The dairy industry generates large quantities of wastewater from various processing plants. Sources of wastewater include bottling, cheese making, butter, condensed milk, ghee, milk powder, and ice cream plants. Dairy waste is biodegradable but strong in nature. It has high levels of BOD, COD, total solids, oil and grease. Treatment alternatives for dairy waste include use for irrigation after primary treatment, low-cost treatment using screens and stabilization ponds, and advanced secondary treatment using activated sludge process.
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
AIR POLUUTION CONTROL course material by Prof S S JAHAGIRDAR,NKOCET,SOLAPUR for BE (CIVIL ) students of Solapur university. Content will be also useful for SHIVAJI and PUNE university students
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
AIR POLUUTION CONTROL course material by Prof S S JAHAGIRDAR,NKOCET,SOLAPUR for BE (CIVIL ) students of Solapur university. Content will be also useful for SHIVAJI and PUNE university students
This document contains a question bank for an environmental engineering course covering topics related to sewage collection and treatment, solid waste management, and air pollution. It includes 24 units with over 150 questions on topics such as sewage pumping, sewer systems, wastewater characterization, unit operations, anaerobic treatment methods, self-purification of streams, solid waste management, and air pollution sources. The questions range from short definitions to longer explanations requiring diagrams and detailed responses. The document serves as a resource for instructors to generate exam questions testing students' understanding of key concepts in environmental engineering.
Industrial wastewaters have highly variable compositions depending on the industry and materials processed. They can contain high levels of total suspended solids, biochemical oxygen demand, and chemical oxygen demand. Unlike domestic sewage, industrial wastewaters may have pH levels outside the normal range of 6-9 and contain high concentrations of dissolved metal salts. The flow patterns of industrial wastewaters differ from domestic sewage in that they are influenced by the operations within a factory rather than daily living activities. Factors like shift work and batch manufacturing can cause wastewater characteristics to vary over time. Industrial wastewaters require consideration of parameters like biodegradability, strength, volumes, variations, and special characteristics that could impact treatment plant operations.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
AIR POLLUTION CONTROL course material by Prof S S JAHAGIRDAR,NKOCET,SOLAPUR for BE (CIVIL ) students of Solapur university. Content will be also useful for SHIVAJI and PUNE university students
Lecture notes of Environmental Engg-II as per syllabus of solapur university for TE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid College of Engg and Technology,
Solapur
This document outlines the objectives, units, teaching scheme, and reference material for an elective course on industrial waste treatment. The key topics covered include sources and characterization of industrial wastewater, various in-plant waste reduction methods, water quality monitoring, stream classification, sludge disposal, treatment flow diagrams, major industry wastewater treatment, and water pollution control acts and standards. The course aims to provide a thorough understanding of industrial wastewater generation and basic knowledge of treatment options and legislation. Site visits to various industries are included in the term work.
AIR POLLUTION CONTROL course material by Prof S S JAHAGIRDAR,NKOCET,SOLAPUR for BE (CIVIL ) students of Solapur university. Content will be also useful for SHIVAJI and PUNE university students
An Overview of Phenomenon of BOD and CODIRJET Journal
The document discusses biochemical oxygen demand (BOD) and chemical oxygen demand (COD), which are common methods for measuring water quality. BOD measures the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water over 5 days. COD measures the amount of oxygen required to chemically oxidize organic compounds in water, providing a faster analysis than BOD. Both BOD and COD are important for assessing the organic pollution load of wastewater and the efficiency of treatment plants. While COD correlates well with BOD, it does not distinguish between biodegradable and non-biodegradable organic matter. Real-time monitoring of BOD and COD can provide information on pollutant
Routine analysis of wastewaters quality parametersArvind Kumar
This document discusses parameters for analyzing waste water quality. It describes the objectives of waste water analysis which include monitoring treatment plant efficiency. Physical analyses examine characteristics like color and odor, while chemical analyses determine substance amounts. Key parameters discussed include biochemical oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen, pH, nitrogen, and solids. BOD testing measures oxygen consumed by bacteria breaking down organic matter over time. COD testing uses chemical oxidization to similarly assess ability to consume oxygen. Their ratio provides information on a waste water's biodegradability.
This document outlines the topics and assessment schedule for a course on advanced sanitary engineering. The key topics covered include the physical, chemical, and biological characteristics of wastewater, fundamentals of biological wastewater treatment, suspended growth treatment systems, and attached growth biological treatment systems. Student performance will be evaluated based on quizzes, a midterm exam, and a final exam.
- The document describes the characterization of sewage based on its physical, chemical, and biological properties.
- Key physical characteristics include turbidity, color, odor, and temperature. Chemical characteristics include solids, alkalinity, pH, nitrogen compounds, and phosphorus. Biological characteristics involve bacteria and biochemical oxygen demand (BOD).
- BOD measures the amount of oxygen consumed by microorganisms to break down organic matter. It is used to assess water quality, with higher BOD indicating more pollution. The document provides equations to model BOD over time based on temperature and other factors.
This document provides information about the chemical oxygen demand (COD) test for measuring organic matter in wastewater. It discusses that COD measures the oxygen required to chemically oxidize organic material using potassium dichromate and sulfuric acid. COD and BOD both measure how much oxygen water will consume, but COD can oxidize more material so values are higher than BOD. The document outlines the COD test procedure and calculations for determining COD levels in wastewater samples. It also discusses standards, sources of BOD and COD, and limitations of the COD test.
This document summarizes a study analyzing the characteristics of wastewater from the sewerage system in Greater Noida, India. It describes the various physical, chemical, and biological parameters tested in the wastewater including solids, COD, BOD, nutrients, metals, and microorganisms. Samples were taken and various wastewater quality characteristics were measured to understand the composition and remove pollutants from the water before discharge or reuse. The goals were to ensure good water quality, remove pollutants efficiently and economically, and avoid other environmental impacts.
This document discusses various organic and inorganic compounds found in water. It covers topics like biochemical oxygen demand (BOD), chemical oxygen demand (COD), and suspended solids. For BOD and COD, it explains the test procedures and calculations used to measure levels of each compound. It also discusses how temperature affects BOD reaction rates. Inorganic compounds are classified as metals or non-metals. The document provides details on measuring parameters that indicate levels of organic pollution in water samples.
The main focus within environmental analysis is the subject of water. Our instruments are used to carry out routine analysis of organic impurities in the water industry. Learn about our solutions for water analysis.
Chemical oxygen demand (COD) is a measure of the oxygen-consuming capacity of inorganic and organic matter in water. COD determines the amount of oxygen required to oxidize organic compounds and inorganic matter in water. There are two main methods to measure COD - the open reflux method and closed reflux method. The open reflux method involves refluxing the sample and dichromate solution for 2 hours, then titrating the remaining dichromate with ferrous ammonium sulfate to determine COD concentration in mg/L. A high COD means more oxidizable organic material is present in water, which can reduce dissolved oxygen and harm aquatic life. COD is useful for assessing waste strength and effects on receiving environments
The document discusses the microbiology of wastewater treatment. It describes the types and characteristics of wastewater and indicators used to measure wastewater strength like BOD, COD, and TOD. It outlines the pollution problems caused by untreated wastewater. It then explains the various methods used in wastewater treatment including primary treatment to remove solids, and secondary treatment using processes like septic tanks, Imhoff tanks, trickling filters, activated sludge, and oxidation ponds where microorganisms break down organic matter.
Deals with the measurement of organic matter concentration in water and wastewater. BOD, BOD kinetics and COD tests are discussed at length. Further, as part of the ultimate BOD measurement, other associated tests like Dissolved Oxygen and Ammonical, Nitrate and Nitrite forms of nitrogen are also discussed.
This document discusses the requirements and facilities needed for an effective water testing laboratory. It outlines the NABL accreditation standards as well as definitions of important analytical terms. Key equipment is described including spectrophotometers, COD and BOD apparatus, and AAS. Proper sample handling procedures and quality control measures are also emphasized. The goal is to establish a laboratory that can reliably monitor water quality and address specific problems to better protect human and environmental health.
This document summarizes a seminar presentation on determining sewage quality using the chemical oxygen demand (COD) method. It defines COD as the total oxygen required to chemically oxidize organic matter in water. The presentation covers the history of COD testing using different oxidizing agents, the dichromate principle method, and calculations to determine COD levels in mg/L. Advantages are that COD results are faster than biochemical oxygen demand testing and more compounds are oxidized, while disadvantages are COD cannot differentiate biologically reactive compounds.
The document discusses biochemical oxygen demand (BOD) and its importance as a measure of water quality. BOD is defined as the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in a water sample over a 5 day incubation period at 20°C. A higher BOD indicates a higher level of organic pollution. BOD is used to assess the effectiveness of wastewater treatment plants and provides an indication of overall water quality. The standard BOD test involves measuring the dissolved oxygen in a sample before and after 5 days, with the difference representing the oxygen consumed during decomposition of organic compounds.
Sampling and analysis of treatment processes are performed in the laboratory to check if organic matter is removed as designed and the discharge standard is met. The laboratory tests various parameters to understand if the effluent treatment plant is functioning properly and to determine if corrective measures are needed. Parameters include COD, BOD, TSS, pH, and other measures of water quality. Various devices are used to test these parameters, including BOD incubators, pH meters, dissolved oxygen meters, and ORP meters, to monitor the effluent treatment process.
This document provides an introduction to solid waste incineration. It discusses the basics of the incineration process and combustion chemistry. The document classifies different types of waste and characterizes waste properties important for combustion such as heating value and moisture content. It describes the mechanisms of primary and secondary combustion. The primary combustion process involves drying, volatilization, and burnout of solids. Secondary combustion is needed to fully destroy unburned gases, vapors, and particulates. Operational parameters like excess air levels and their impact on combustion efficiency and gas temperatures are also covered.
This document provides information about wastewater engineering as part of a civil engineering course. It discusses why wastewater engineering is important when pollution loads exceed the environment's carrying capacity. Nature has limits on its ability to self-purify, so wastewater treatment systems must be engineered to treat pollutants within smaller areas and timeframes. The document then covers characteristics of wastewater, parameters for analysis including biochemical oxygen demand, and methods for determining measures like total and volatile solids.
Reducing environmental impacts of industrial effluentsJYOTI SAROJ
This document discusses reducing environmental impacts from industrial effluents. It begins by outlining how industrial waste contributes significantly to water pollution. It then defines industrial effluent and describes its major pollutants like dyes, heavy metals, and pesticides. The impacts of effluent on water bodies, soil, air, and ecosystems are examined. Various treatment methods for effluents are presented, including physical, chemical, and biological approaches. Specific treatment processes used for tannery effluent are outlined due to its toxic pollutants. The document concludes by describing fungal and bacterial degradation methods for treating industrial wastewater.
This thesis report analyzes parameters of effluent from three textile industries in Bangladesh. Water samples were collected from the effluent treatment plants of three textile companies and tested for biochemical oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen (DO), pH, and hardness. The test results found that all three samples exceeded standards for BOD, COD, and hardness. While pH and DO varied between samples, none fully met regulatory standards. The analysis suggests textile effluent requires further treatment before discharge to reduce environmental pollution.
Lesson2 Stoichiometry and mass balance.pdff1002753214
This document provides information on the stoichiometric modeling of fermentation processes. It discusses how to write balanced chemical equations for biomass growth and product formation based on elemental balances, electron balances, and experimentally determined yield coefficients. It also describes how to calculate theoretical oxygen demand using the stoichiometric equations. The document concludes with a case study on the production of citric acid from molasses fermentation, providing the experimental parameters and yields to develop a mass balance model for the process.
The document discusses indoor and outdoor air pollution. It notes that indoor air pollution is usually a greater threat than outdoor pollution, as indoor pollution levels can be up to 70 times higher. Major indoor pollutants in developed countries include tobacco smoke, formaldehyde, radon gas, and fine particles. Unventilated burning of biomass in developing countries for cooking and heating leads to high indoor pollution levels and over 1.6 million deaths per year globally. Reducing indoor pollution requires using low-toxicity building materials, monitoring air quality, and allowing better mixing of indoor and outdoor air.
The document summarizes information from public health reports on the decline of typhoid fever in the late 19th/early 20th century. It finds that:
1) The decline happened gradually over time and was not associated with any centralized intervention like water filtration or chlorination.
2) Improved personal hygiene was likely the dominant factor in reducing typhoid, as the disease spread through food preparation with contaminated hands rather than centralized systems like water or milk.
3) Other factors like refrigeration and commercial/home refrigeration may have reduced summertime increases in typhoid by limiting bacterial growth in food.
An oxidation pond needs to be designed for a location at 28 degrees latitude to serve a population of 10,000 people. The pond should reduce BOD levels from 300 mg/L to 30 mg/L given an inlet flow of 120 Lpcd, a BOD loading of 200 kg/ha/d, a temperature range of 15-25 degrees C, and a pond removal constant of 0.1/d at 20 degrees C.
This document discusses various communicable diseases and their transmission and prevention. It covers diseases spread through oral-fecal transmission like typhoid, dysentery, cholera, and hepatitis A. It also discusses airborne diseases like the common cold, measles, influenza, and tuberculosis. Vector-borne diseases transmitted by mosquitoes, like malaria, are also covered. Prevention focuses on proper sanitation, hygiene, vaccination, and controlling insect vectors to interrupt disease transmission.
This document provides information on various rural sanitation systems and technologies. It discusses traditional practices like open defecation and dry latrines. It then describes improved sanitation options like flush toilets, ecological sanitation, and government sanitation programs in India like the Central Rural Sanitation Programme and Total Sanitation Campaign. Specific system details are provided for ventilated pit latrines, borehole latrines, dug well latrines, pour flush latrines, and septic tanks. The document emphasizes the importance of sanitation for public health and moving communities towards ending open defecation."
The document discusses various methods for treating wastewater, including removing nitrogen, phosphorus, and heavy metals. It describes the biological processes of nitrification and denitrification for removing nitrogen. Nitrification converts ammonia to nitrates while denitrification converts nitrates to nitrogen gas. Phosphorus can be removed through chemical precipitation or biological removal by certain bacteria. Heavy metals are removed using physico-chemical methods like adsorption, ion exchange, reverse osmosis, and electrodialysis.
This document contains homework questions regarding calculating dissolved oxygen (DO) sag curves for wastewater discharge into surface streams. It provides information on stream and effluent characteristics, formulas for calculating DO concentration over time and distance from the discharge point, and asks the student to use the information and formulas to answer multiple questions. These include calculating DO levels over time after mixing, maximum BOD discharge limits to maintain minimum DO standards, critical DO deficit levels and times/locations, and drawing DO sag curves for different BOD loadings from multiple discharge points.
Using data provided about a river and wastewater effluent, the document discusses:
1) Calculating the dissolved oxygen concentration in the river two days after mixing with the effluent.
2) Determining the lowest dissolved oxygen concentration that will result from the waste discharge.
3) Solving practice problems using the Streeter-Phelps equation to model dissolved oxygen sag curves in streams impacted by biochemical oxygen demand from wastewater.
This document discusses industrial wastewater treatment and management. It provides an overview of equalization, which is a method used to retain wastewater in basins so that the effluent discharged is uniform in characteristics like pH, turbidity, BOD, etc. This helps improve sedimentation efficiency, increase biological process efficiency by minimizing shock loads, and allows for automated control of treatment operations. Equalization basins are sometimes aerated to provide better mixing, chemical oxidation, some biological oxidation, and prevent solids settling. The capacity and detention period of equalization tanks needs to be sufficient to homogenize the wastewater flows.
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
The document provides information on the Water Pollution Control Act of 1974 in India. It discusses the organizational setup and functions of the Central and State Pollution Control Boards established by the Act. It also defines key terms like pollution and trade effluent. Additional topics covered include common effluent treatment plants, acclimatization of bacteria to treat industrial waste, minimum national standards for effluent discharge, and the process for conducting a waste audit.
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
The document discusses the major contaminants found in wastewater and their appropriate treatment methods. The contaminants include suspended solids, biodegradable organics, pathogens, nutrients, refractory organics, heavy metals, and dissolved inorganic solids. Treatment methods are classified as physical, chemical, or biological unit operations/processes. Physical processes involve forces like screening and sedimentation. Chemical processes use additions of chemicals through precipitation or disinfection. Biological treatments use microorganisms to break down organics in processes like activated sludge or trickling filters. Each contaminant has one or more treatment methods recommended based on their removal via physical, chemical, or biological means.
Lecture notes of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
This document discusses various methods for removing dissolved solids from industrial wastewater, including inorganic and organic solids. It describes four key methods for removing inorganic solids: evaporation, ion exchange, reverse osmosis, and electrodialysis. For organic solids, the most common technique is adsorption using activated carbon due to its extremely large surface area. Pretreatment is important with methods like reverse osmosis to prevent membrane fouling.
Levelised Cost of Hydrogen (LCOH) Calculator ManualMassimo Talia
The aim of this manual is to explain the
methodology behind the Levelized Cost of
Hydrogen (LCOH) calculator. Moreover, this
manual also demonstrates how the calculator
can be used for estimating the expenses associated with hydrogen production in Europe
using low-temperature electrolysis considering different sources of electricity
This study Examines the Effectiveness of Talent Procurement through the Imple...DharmaBanothu
In the world with high technology and fast
forward mindset recruiters are walking/showing interest
towards E-Recruitment. Present most of the HRs of
many companies are choosing E-Recruitment as the best
choice for recruitment. E-Recruitment is being done
through many online platforms like Linkedin, Naukri,
Instagram , Facebook etc. Now with high technology E-
Recruitment has gone through next level by using
Artificial Intelligence too.
Key Words : Talent Management, Talent Acquisition , E-
Recruitment , Artificial Intelligence Introduction
Effectiveness of Talent Acquisition through E-
Recruitment in this topic we will discuss about 4important
and interlinked topics which are
Blood finder application project report (1).pdfKamal Acharya
Blood Finder is an emergency time app where a user can search for the blood banks as
well as the registered blood donors around Mumbai. This application also provide an
opportunity for the user of this application to become a registered donor for this user have
to enroll for the donor request from the application itself. If the admin wish to make user
a registered donor, with some of the formalities with the organization it can be done.
Specialization of this application is that the user will not have to register on sign-in for
searching the blood banks and blood donors it can be just done by installing the
application to the mobile.
The purpose of making this application is to save the user’s time for searching blood of
needed blood group during the time of the emergency.
This is an android application developed in Java and XML with the connectivity of
SQLite database. This application will provide most of basic functionality required for an
emergency time application. All the details of Blood banks and Blood donors are stored
in the database i.e. SQLite.
This application allowed the user to get all the information regarding blood banks and
blood donors such as Name, Number, Address, Blood Group, rather than searching it on
the different websites and wasting the precious time. This application is effective and
user friendly.
Applications of artificial Intelligence in Mechanical Engineering.pdfAtif Razi
Historically, mechanical engineering has relied heavily on human expertise and empirical methods to solve complex problems. With the introduction of computer-aided design (CAD) and finite element analysis (FEA), the field took its first steps towards digitization. These tools allowed engineers to simulate and analyze mechanical systems with greater accuracy and efficiency. However, the sheer volume of data generated by modern engineering systems and the increasing complexity of these systems have necessitated more advanced analytical tools, paving the way for AI.
AI offers the capability to process vast amounts of data, identify patterns, and make predictions with a level of speed and accuracy unattainable by traditional methods. This has profound implications for mechanical engineering, enabling more efficient design processes, predictive maintenance strategies, and optimized manufacturing operations. AI-driven tools can learn from historical data, adapt to new information, and continuously improve their performance, making them invaluable in tackling the multifaceted challenges of modern mechanical engineering.
Generative AI Use cases applications solutions and implementation.pdfmahaffeycheryld
Generative AI solutions encompass a range of capabilities from content creation to complex problem-solving across industries. Implementing generative AI involves identifying specific business needs, developing tailored AI models using techniques like GANs and VAEs, and integrating these models into existing workflows. Data quality and continuous model refinement are crucial for effective implementation. Businesses must also consider ethical implications and ensure transparency in AI decision-making. Generative AI's implementation aims to enhance efficiency, creativity, and innovation by leveraging autonomous generation and sophisticated learning algorithms to meet diverse business challenges.
https://www.leewayhertz.com/generative-ai-use-cases-and-applications/
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELijaia
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Supermarket Management System Project Report.pdfKamal Acharya
Supermarket management is a stand-alone J2EE using Eclipse Juno program.
This project contains all the necessary required information about maintaining
the supermarket billing system.
The core idea of this project to minimize the paper work and centralize the
data. Here all the communication is taken in secure manner. That is, in this
application the information will be stored in client itself. For further security the
data base is stored in the back-end oracle and so no intruders can access it.
2. • The waste water characteristics
can be classified into three
major categories:
• Physical characteristics
• Chemical characteristics
• Biological characteristics
3. Physical Characteristics of
Wastewater
• The most important parameters used
to characterize the physical properties
of wastewater are:
• Solids content• Solids content
• Odors
• Temperature
• Density
• Color
• Turbidity
5. Organic Material in Wastewater
Total organic material
Proteins
Carbohydrates
Fats, oils, and grease
PesticidesPesticides
Phenols
Priority pollutants
Refractory pollutants
Surfactants
Volatile organic compounds
6. Inorganic Material in Wastewater
pH
Alkalinity
Heavy metals
Nitrate and nitrite
AmmoniaAmmonia
Phosphorous
Sulfate and sulfite
Sulfide
Chloride
Oxygen
7. Biological Characteristics
• These are done to identify the
group of micro-organisms
present in the industrialpresent in the industrial
waste.
• These require sophisticated
instruments such as
microscopes etc
8. Other important terms
1. Theoretical Oxygen Demand
This is theoretical method of computing
the oxygen demand of various
constituents of the organic matter
present in wastewater.present in wastewater.
The organic matter present in the
wastewater may be of animal or
vegetable origin, consisting of principal
groups such as carbohydrates, proteins,
fats and products of their decomposition
9. • Each one of these is a typical
combinations of carbon,
hydrogen, oxygen and nitrogen
based on chemical formula.
• Hence if chemical formulae of the• Hence if chemical formulae of the
constituents are known, ThOD can
be determined
10. Steps in calculation of ThOD of
Glycine (CH2(NH2)COOH)
1. In the first step, the organic carbon and
nitrogen are converted to carbon dioxide
(CO2) and ammonia (NH3), respectively.
2. In the second and third steps, the2. In the second and third steps, the
ammonia is oxidized sequentially to
nitrite and nitrate.
3. The ThOD is the sum of the oxygen
required for all three steps.
13. 2. Relative Stability
• It is defined as the ratio of available
oxygen to the required oxygen
satisfying the first stage BOD.
• The available oxygen will include• The available oxygen will include
dissolved oxygen (DO) as well as
oxygen present as nitrite or nitrate.
• It is expressed as % of total oxygen
required.
14. • The test for the relative stability is
carried out in following steps:
i. The wastewater sample is filled in
a glass- stoppered bottle and a
small quantity of methylene bluesmall quantity of methylene blue
is added to it.
ii. The mixture is then incubated
either at a temp of 200C or 370 C.
In India 370 C is prefered.
15. iii. During the incubation period, the
anaerobic bacteria start their function,
the available DO is consumed and H2S
is produced which decolourise the
mixture.
The time ‘t’ in days required forThe time ‘t’ in days required for
bleaching the blue colour is noted.
iv. The relative stability is given by
SR = 100 (1- 0.794t20)
SR = 100 (1- 0.695t37)
16. Where,
t20 and t37 are the number of days
of incubation at 200 C and 370 C
respectively.
17. 3. Population Equivalent
• The wastewater carried by the
sewer consists of domestic sewage
and the industrial wastewater.
• Since, contribution of solids to• Since, contribution of solids to
sewage should be nearly constant
on a per capita basis, the BOD
contribution should aslo be
constant.
18. • Generally, BOD contribution per
capita per day may be taken as 80
g/day.
• Industrial wastewaters are generally
compared with per capita domesticcompared with per capita domestic
sewage, through the concept of
Population equivalent (PE) using per
capita BOD values as basis.
19. PE = (Total BOD5 of the industrial
wastewater in kg/day)/(BOD5
value per capita/day)value per capita/day)
20. Objective Questions
1. Molecular weight glucose is ____.
(170/180/192/205)
2. Rlative stability of wastewater will
________ with increase in temperature
for same bleaching time. (Remain
same/Decrease/Increase/none of these)
3. BOD 520 contribution per capita per day
is considered as
__grams/day.(50/80/120/180)
21. Theory Questions
Q1. Give procedure for finding out
relative stability of wastewater. Find
relative stability of wastewater for 7
days bleaching time at 200 C.
Q2. What is Theoretical Oxygen Demand
(ThOD)? Mention the steps in the
reactions. Find ThOD of Glucose of
concentration 350 mg/lit
22. Q3. Define relative stability of
wastewater. Find relative stability of
wastewater for 3 days bleaching time at
370 C temperature.