This document discusses sustainable wastewater treatment. It begins by defining wastewater and its sources. There are then four main stages of treatment: preliminary, primary, secondary, and tertiary. Preliminary treatment screens out solids, primary uses settling and skimming to remove other particles, secondary uses bacteria to break down organic matter, and tertiary can remove remaining impurities. The case study discusses Rio de Janeiro's efforts to treat sewage discharged into Guanabara Bay using the Nereda technology, a new treatment plant. Advantages include clean water and energy production from sludge, while disadvantages include high costs and potential environmental impacts if not managed properly. Proper maintenance is also important for plant operations.
P.P.T on water distribution system by Manish PandeyManish Pandey
The document discusses different types of distribution networks and pipes used in water distribution systems. It describes dead end, radial, grid iron and ring networks. PVC, CPVC, PEX and copper pipes are discussed. Distribution reservoirs help maintain water pressure and quality by absorbing demand fluctuations. Elevated and surface reservoirs are used. Joints like end caps, tees, strainers and reducers connect pipes. The purpose of distribution systems is to deliver water to consumers with appropriate quality, quantity and pressure.
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
Hydrology is the study of water on Earth. It includes the water cycle, water resources, and watershed sustainability. A key aspect of hydrology is understanding floods and droughts, which can cause extensive damage and economic losses. As the global population grows, water scarcity is increasing in many regions. Integrated water resources management seeks to balance water usage with conservation and environmental needs through a holistic approach. Rainwater harvesting and watershed management are important techniques for augmenting water supplies in a sustainable manner. Dams such as gravity, earthfill, rockfill, and concrete face rockfill structures are commonly used for water storage and irrigation worldwide.
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.
The document discusses the importance of protected water supply schemes and outlines several key aspects of planning a public water supply system. It notes that water is essential for human existence and outlines the goals of supplying safe, adequate water quantity while encouraging cleanliness. It also discusses water demands, including domestic, industrial, institutional and fire demands. Various factors are considered when assessing water demands such as per capita consumption rates. Water borne diseases caused by bacteria, viruses and protozoa in contaminated water are also summarized.
The document summarizes Mohammed Inzamamuddin's seminar presentation on wastewater treatment. It discusses what wastewater is, the need for wastewater treatment, common pollutants found in wastewater, and basic wastewater treatment processes. The presentation covers primary and secondary treatment methods as well as land treatment of wastewater. It emphasizes that wastewater treatment is necessary to allow safe reuse of water resources and prevent water pollution. The document provides an overview of wastewater treatment concepts and technologies.
This document describes a common effluent treatment plant (CETP) designed to treat wastewater from tanneries. It first provides background on tanneries and the wastewater generation process. It then outlines the key components of the CETP, including primary treatment using screens and settling tanks, secondary treatment using aeration and clarification, and tertiary treatment using filters. It also discusses chemical dosing requirements and design parameters like retention time. The CETP is presented as an effective way to treat combined wastewater from multiple tanneries to reduce costs and help meet discharge standards.
This document discusses the sludge digestion process. It involves three stages: acid fermentation where organic solids are broken down, acid regression where volatile acids are converted, and alkaline fermentation where methane is produced. Key factors that affect digestion are temperature, pH, seeding with digested sludge, and mixing raw and digested sludge. The document also provides an example design for a sludge digestion tank to handle 40,000 people based on sludge production rates and tank sizing calculations.
P.P.T on water distribution system by Manish PandeyManish Pandey
The document discusses different types of distribution networks and pipes used in water distribution systems. It describes dead end, radial, grid iron and ring networks. PVC, CPVC, PEX and copper pipes are discussed. Distribution reservoirs help maintain water pressure and quality by absorbing demand fluctuations. Elevated and surface reservoirs are used. Joints like end caps, tees, strainers and reducers connect pipes. The purpose of distribution systems is to deliver water to consumers with appropriate quality, quantity and pressure.
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
Hydrology is the study of water on Earth. It includes the water cycle, water resources, and watershed sustainability. A key aspect of hydrology is understanding floods and droughts, which can cause extensive damage and economic losses. As the global population grows, water scarcity is increasing in many regions. Integrated water resources management seeks to balance water usage with conservation and environmental needs through a holistic approach. Rainwater harvesting and watershed management are important techniques for augmenting water supplies in a sustainable manner. Dams such as gravity, earthfill, rockfill, and concrete face rockfill structures are commonly used for water storage and irrigation worldwide.
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.
The document discusses the importance of protected water supply schemes and outlines several key aspects of planning a public water supply system. It notes that water is essential for human existence and outlines the goals of supplying safe, adequate water quantity while encouraging cleanliness. It also discusses water demands, including domestic, industrial, institutional and fire demands. Various factors are considered when assessing water demands such as per capita consumption rates. Water borne diseases caused by bacteria, viruses and protozoa in contaminated water are also summarized.
The document summarizes Mohammed Inzamamuddin's seminar presentation on wastewater treatment. It discusses what wastewater is, the need for wastewater treatment, common pollutants found in wastewater, and basic wastewater treatment processes. The presentation covers primary and secondary treatment methods as well as land treatment of wastewater. It emphasizes that wastewater treatment is necessary to allow safe reuse of water resources and prevent water pollution. The document provides an overview of wastewater treatment concepts and technologies.
This document describes a common effluent treatment plant (CETP) designed to treat wastewater from tanneries. It first provides background on tanneries and the wastewater generation process. It then outlines the key components of the CETP, including primary treatment using screens and settling tanks, secondary treatment using aeration and clarification, and tertiary treatment using filters. It also discusses chemical dosing requirements and design parameters like retention time. The CETP is presented as an effective way to treat combined wastewater from multiple tanneries to reduce costs and help meet discharge standards.
This document discusses the sludge digestion process. It involves three stages: acid fermentation where organic solids are broken down, acid regression where volatile acids are converted, and alkaline fermentation where methane is produced. Key factors that affect digestion are temperature, pH, seeding with digested sludge, and mixing raw and digested sludge. The document also provides an example design for a sludge digestion tank to handle 40,000 people based on sludge production rates and tank sizing calculations.
The document discusses different types of water intake structures. Intakes collect water from sources like lakes, rivers, reservoirs and canals. The main types are lake intakes, river intakes, reservoir intakes and canal intakes. Lake intakes use submersible pipes with bell mouths and screens. River intakes have intake towers with penstocks and screens. Reservoir intakes are towers constructed on dam slopes with intake pipes at different levels. Canal intakes are simple structures with intake pipes in chambers with screens. The document provides details on the design and functioning of each type.
This is a power point presentation on design of a 30 MLD sewage treatment plant. It includes the different characteristics of waste water,various treatment units, design results and a layout of sewage treatment plant.
Visit my slide share channel for downloading report of this project.
Introduction to water supply engg. by Prof. D S.Shahdhavalsshah
Introduction to water supply Engineering. Basic definitions in water supply engineering. Importance of water supply engineering.
Financing of water supply schemes. Flow diagram of water supply scheme, layouts of water supply schemes, etc.
Presentation on wastewater treatment plantAmreetOjha
Presentation on Wastewater Treatment Plant. In which you will get Process Flow Diagram and about of Sewage Treatment Plant and Effluent Treatment Plant.
supplying wholesome water to consumers with suitable methods in economical way,to exist human life water is very important as air is,so,as a civil engineer's we have to supply safe water to consumers in economical way,in this we are going to explain about component parts of water supply scheme,systems of water distribution and layouts of distribution system according to their suitability.
Aeration is the process of bringing water and air into close contact to remove dissolved gases like carbon dioxide and oxidize dissolved metals such as iron. It is often the first major process at water treatment plants. There are two main methods of aeration - passing water through air, and passing air through water. Common reasons for aeration include oxidation of organic matter, increasing dissolved oxygen, and removing substances that cause odor or could interfere with subsequent treatment processes.
WATER & WASTE WATER ENGINEERING - water treatment process & unitsEddy Ankit Gangani
This presentation is made with a view to introduce various units & processes carried out in water treatment plant with various trains or say chains of units to meet Indian Standard criteria.
This document summarizes a case study on sewage treatment and reuse. It discusses the objectives of conserving water and reusing treated water effectively. It describes the various treatment processes used, including primary treatment involving screening and settling, secondary treatment using UASB reactors and lagoons, and disinfection. The case study then analyzes a specific research study on treating sewage in India using activated sludge, chlorination, and dual media filtration. It provides results showing reductions in contaminants like BOD, COD, and coliform during treatment. The conclusion states that dual media filtration helps further treat sewage water to allow reuse rather than discharge, preserving natural resources and the environment.
This document discusses methods for estimating wastewater and stormwater quantities for sewer system design. It defines key terms like sewage, sewer, and sewerage. It describes the components of wastewater engineering like collection, disposal, and treatment systems. It discusses different sewer systems like separate, combined, and partially separated. Methods for estimating sanitary sewage include considering population, water supply rate, and a peaking factor. Stormwater is estimated using the Rational Method or empirical formulas considering rainfall intensity, runoff coefficient, and catchment area. The document provides examples to calculate runoff coefficient, design discharge, and stormwater quantity.
Disposal by dilution is a process where treated sewage or effluent is discharged into a river or stream. For dilution to be an effective means of disposal, certain conditions must be met, such as the sewage being relatively fresh, the receiving water having a high dissolved oxygen content, and the receiving water not being used for navigation downstream. The amount of treatment required depends on the dilution factor - a higher dilution factor means less treatment is required. Natural processes like dilution, sedimentation, sunlight, oxidation, and reduction help purify the sewage over time as it mixes with the receiving water.
The document discusses different types of sedimentation tanks used to remove particles from water and wastewater. There are three main types: rectangular tanks with baffle walls to reduce flow velocity; circular tanks which use scrapers along the bottom to remove sludge; and hopper bottom tanks where water flows vertically from inlet to outlet, settling particles in the tapered bottom section. Sedimentation tanks are an important part of water and wastewater treatment systems.
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 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.
This document discusses land disposal of sewage and the standards for wastewater effluents that are discharged onto land for irrigation. It outlines the Bureau of Indian Standards quality standards that set limits on pollutants in wastewater used for irrigation. Land disposal is appropriate when natural waterways are not nearby, irrigation water is scarce, or rainfall is low. The document describes different techniques for irrigating crops with sewage and measures to prevent "sewage sickness" of the land from overuse.
1. Various essential accessories in sewerage systems are called sewer appurtenances. They include manholes, drop manholes, lamp holes, street inlets, catch basins, flushing devices, grease/oil/sand traps, inverted siphons, sewer outlets, and ventilating shafts.
2. Manholes allow inspection, cleaning, repair and flow measurement of sewers. Drop manholes are used when the connection cannot be arranged within 60cm of the manhole invert. Lamp holes have openings for lowering lamps into sewers. Street inlets admit stormwater into sewers. Catch basins remove grit before sewage enters sewers.
3. Flushing devices use
Wastewater Treatment: Definition, Process Steps, Design Considerations, Plant Types (With PDF)
Written by Anup Kumar Deyin Civil,Construction,Mechanical,Piping Interface,Process
Wastewater treatment is a process to treat sewage or wastewater to remove suspended solid contaminants and convert them into an effluent that can be discharged back to the environment with acceptable impact. The plants where the wastewater treatment process takes place are popularly known as Wastewater treatment plants, Water resource recovery facilities, or Sewage Treatment Plants. Pollutants present in wastewater can negatively impact the environment and human health. So, these must be removed, broken down, or converted during the treatment process. Typical pollutants that are normally present in wastewater are:
Bacteria, viruses, and disease-causing pathogens.
helminths (intestinal worms and worm-like parasites)
Toxic Chlorine compounds and inorganic chloramines.
Metals possessing toxic effects like mercury, lead, cadmium, chromium, and arsenic.
Decaying organic matter and debris.
oils and greases.
Toxic chemicals like PCBs, PAHs, dioxins, furans, pesticides, phenols, etc.
Some pharmaceutical and personal care products
WASTE water treatment project........ Wastewater treatment is a process used to convert dirty wastewater into an effluent that can be returned to the water cycle with minimum impact on the environment, or directly reused. The latter is called water reclamation because treated wastewater can then be used for other purposes. The treatment process takes place in a wastewater treatment plant (WWTP), often referred to as a Water Resource Recovery Facility (WRRF) or a sewage treatment plant. Pollutants in municipal wastewater (households and small industries) are removed or broken down.
The treatment of wastewater is part of the overarching field of sanitation. Sanitation also includes the management of human waste and solid waste as well as stormwater (drainage) management.[1] By-products from wastewater treatment plants, such as screenings, grit and sewage sludge may also be treated in a wastewater treatment plant.[2]:Ch.14
The document discusses different types of water intake structures. Intakes collect water from sources like lakes, rivers, reservoirs and canals. The main types are lake intakes, river intakes, reservoir intakes and canal intakes. Lake intakes use submersible pipes with bell mouths and screens. River intakes have intake towers with penstocks and screens. Reservoir intakes are towers constructed on dam slopes with intake pipes at different levels. Canal intakes are simple structures with intake pipes in chambers with screens. The document provides details on the design and functioning of each type.
This is a power point presentation on design of a 30 MLD sewage treatment plant. It includes the different characteristics of waste water,various treatment units, design results and a layout of sewage treatment plant.
Visit my slide share channel for downloading report of this project.
Introduction to water supply engg. by Prof. D S.Shahdhavalsshah
Introduction to water supply Engineering. Basic definitions in water supply engineering. Importance of water supply engineering.
Financing of water supply schemes. Flow diagram of water supply scheme, layouts of water supply schemes, etc.
Presentation on wastewater treatment plantAmreetOjha
Presentation on Wastewater Treatment Plant. In which you will get Process Flow Diagram and about of Sewage Treatment Plant and Effluent Treatment Plant.
supplying wholesome water to consumers with suitable methods in economical way,to exist human life water is very important as air is,so,as a civil engineer's we have to supply safe water to consumers in economical way,in this we are going to explain about component parts of water supply scheme,systems of water distribution and layouts of distribution system according to their suitability.
Aeration is the process of bringing water and air into close contact to remove dissolved gases like carbon dioxide and oxidize dissolved metals such as iron. It is often the first major process at water treatment plants. There are two main methods of aeration - passing water through air, and passing air through water. Common reasons for aeration include oxidation of organic matter, increasing dissolved oxygen, and removing substances that cause odor or could interfere with subsequent treatment processes.
WATER & WASTE WATER ENGINEERING - water treatment process & unitsEddy Ankit Gangani
This presentation is made with a view to introduce various units & processes carried out in water treatment plant with various trains or say chains of units to meet Indian Standard criteria.
This document summarizes a case study on sewage treatment and reuse. It discusses the objectives of conserving water and reusing treated water effectively. It describes the various treatment processes used, including primary treatment involving screening and settling, secondary treatment using UASB reactors and lagoons, and disinfection. The case study then analyzes a specific research study on treating sewage in India using activated sludge, chlorination, and dual media filtration. It provides results showing reductions in contaminants like BOD, COD, and coliform during treatment. The conclusion states that dual media filtration helps further treat sewage water to allow reuse rather than discharge, preserving natural resources and the environment.
This document discusses methods for estimating wastewater and stormwater quantities for sewer system design. It defines key terms like sewage, sewer, and sewerage. It describes the components of wastewater engineering like collection, disposal, and treatment systems. It discusses different sewer systems like separate, combined, and partially separated. Methods for estimating sanitary sewage include considering population, water supply rate, and a peaking factor. Stormwater is estimated using the Rational Method or empirical formulas considering rainfall intensity, runoff coefficient, and catchment area. The document provides examples to calculate runoff coefficient, design discharge, and stormwater quantity.
Disposal by dilution is a process where treated sewage or effluent is discharged into a river or stream. For dilution to be an effective means of disposal, certain conditions must be met, such as the sewage being relatively fresh, the receiving water having a high dissolved oxygen content, and the receiving water not being used for navigation downstream. The amount of treatment required depends on the dilution factor - a higher dilution factor means less treatment is required. Natural processes like dilution, sedimentation, sunlight, oxidation, and reduction help purify the sewage over time as it mixes with the receiving water.
The document discusses different types of sedimentation tanks used to remove particles from water and wastewater. There are three main types: rectangular tanks with baffle walls to reduce flow velocity; circular tanks which use scrapers along the bottom to remove sludge; and hopper bottom tanks where water flows vertically from inlet to outlet, settling particles in the tapered bottom section. Sedimentation tanks are an important part of water and wastewater treatment systems.
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 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.
This document discusses land disposal of sewage and the standards for wastewater effluents that are discharged onto land for irrigation. It outlines the Bureau of Indian Standards quality standards that set limits on pollutants in wastewater used for irrigation. Land disposal is appropriate when natural waterways are not nearby, irrigation water is scarce, or rainfall is low. The document describes different techniques for irrigating crops with sewage and measures to prevent "sewage sickness" of the land from overuse.
1. Various essential accessories in sewerage systems are called sewer appurtenances. They include manholes, drop manholes, lamp holes, street inlets, catch basins, flushing devices, grease/oil/sand traps, inverted siphons, sewer outlets, and ventilating shafts.
2. Manholes allow inspection, cleaning, repair and flow measurement of sewers. Drop manholes are used when the connection cannot be arranged within 60cm of the manhole invert. Lamp holes have openings for lowering lamps into sewers. Street inlets admit stormwater into sewers. Catch basins remove grit before sewage enters sewers.
3. Flushing devices use
Wastewater Treatment: Definition, Process Steps, Design Considerations, Plant Types (With PDF)
Written by Anup Kumar Deyin Civil,Construction,Mechanical,Piping Interface,Process
Wastewater treatment is a process to treat sewage or wastewater to remove suspended solid contaminants and convert them into an effluent that can be discharged back to the environment with acceptable impact. The plants where the wastewater treatment process takes place are popularly known as Wastewater treatment plants, Water resource recovery facilities, or Sewage Treatment Plants. Pollutants present in wastewater can negatively impact the environment and human health. So, these must be removed, broken down, or converted during the treatment process. Typical pollutants that are normally present in wastewater are:
Bacteria, viruses, and disease-causing pathogens.
helminths (intestinal worms and worm-like parasites)
Toxic Chlorine compounds and inorganic chloramines.
Metals possessing toxic effects like mercury, lead, cadmium, chromium, and arsenic.
Decaying organic matter and debris.
oils and greases.
Toxic chemicals like PCBs, PAHs, dioxins, furans, pesticides, phenols, etc.
Some pharmaceutical and personal care products
WASTE water treatment project........ Wastewater treatment is a process used to convert dirty wastewater into an effluent that can be returned to the water cycle with minimum impact on the environment, or directly reused. The latter is called water reclamation because treated wastewater can then be used for other purposes. The treatment process takes place in a wastewater treatment plant (WWTP), often referred to as a Water Resource Recovery Facility (WRRF) or a sewage treatment plant. Pollutants in municipal wastewater (households and small industries) are removed or broken down.
The treatment of wastewater is part of the overarching field of sanitation. Sanitation also includes the management of human waste and solid waste as well as stormwater (drainage) management.[1] By-products from wastewater treatment plants, such as screenings, grit and sewage sludge may also be treated in a wastewater treatment plant.[2]:Ch.14
This document provides an overview of various wastewater treatment technologies. It begins with initial screening and primary treatment techniques like sedimentation and filtration to remove solids. It then discusses secondary biological treatment using aerobic and anaerobic processes. Finally, it covers tertiary treatment techniques like disinfection using chlorination, ozonation, and UV irradiation. The document serves as a comprehensive introduction to the different stages and methods involved in wastewater treatment.
This document discusses water pollution and sewage treatment plants. It defines water pollution as the contamination of water bodies through human activities. Some key causes of water pollution include industrial waste, sewage, mining, and chemical fertilizers. Effects include negative human health impacts and ecosystem damage. Sewage treatment plants help address this problem through a multi-stage process involving screening, primary treatment to remove solids, secondary treatment using bacteria, and sometimes disinfection or additional treatment. The goal is to produce treated wastewater safe for release into the environment.
The document discusses effluent treatment plants. It describes effluent as liquid waste flowing from various sources and outlines the key stages of industrial wastewater treatment and sewage treatment. These include pre-treatment, screening, grit removal, primary treatment using sedimentation, secondary treatment using biological processes, and sometimes tertiary treatment for advanced cleaning. Sludge produced is also treated and disposed of safely.
Wastewater treatment is important to manage contaminated water and protect human health. There are various stages of treatment - preliminary to remove solids, primary to remove 60-70% of settleable solids, secondary using microorganisms for biological treatment, and tertiary to further reduce nutrients. Rio de Janeiro upgraded its treatment plant using Dutch Nereda technology, which treats wastewater from 480,000 people in a sustainable three-stage process without chemicals. Challenges include odor, aging infrastructure, and funding, which require strategic planning like creating standards, awareness, learning from other countries, and developing new technologies.
Improper disposal of solid waste can lead to pollution and disease outbreaks. Proper solid waste management through collection, treatment, and disposal is needed globally. Key methods include sanitary landfills, incineration, composting, and recycling. Industrial and agricultural waste as well as saline water also require specialized treatment methods. Metrics to measure sustainability assess environmental, social and economic impacts over time to guide balanced development.
The document discusses sewage systems and sewage treatment processes. It begins by defining sewage and explaining why sewage systems are necessary to collect and transport wastewater from residential and commercial areas to treatment plants. It then describes the multi-step treatment process, including primary treatment to remove solids, secondary biological treatment to remove organic matter using microorganisms, and tertiary treatment for disinfection and removal of additional contaminants. The document provides details on various treatment methods and system components, such as screens, sedimentation tanks, aerators, lagoons, and sludge treatment. Case studies from Japan and the Philippines are also presented to compare sewage treatment approaches.
The document discusses sewage systems and wastewater treatment. It begins with an introduction to sewage and why sewage systems are necessary. It then describes the multi-step treatment process that wastewater undergoes, including primary, secondary, and tertiary treatments. Primary treatment removes solids and organic materials. Secondary treatment uses biological processes to remove dissolved organic matter. Tertiary treatment further removes nutrients and pathogens. The document also discusses sludge treatment methods and provides case studies of specific sewage treatment systems and companies.
Wastewater treatment by effluent treatment plantsRifat Kamrul
This document provides an overview of effluent treatment plants (ETPs). It discusses the need for ETPs, their design considerations and types. It describes the key processes involved in industrial wastewater treatment and sewage treatment. These include physical, chemical and biological treatment levels and mechanisms like screening, sedimentation, aeration, activated sludge etc. The document includes a flow chart illustrating the ETP treatment process.
Sewage refers to wastewater produced by communities and contains liquid waste from toilets, sinks, and other sources, as well as solid waste. Sewage is transported through sewer systems to treatment plants where it undergoes processes to remove contaminants before being released into water bodies. Proper sewage management is important for public health, environmental protection, water quality preservation, and economic reasons. Sewage comes from residential, commercial, industrial, and other sources and is treated through preliminary, primary, secondary, tertiary, disinfection, sludge treatment, and effluent release or reuse processes. Common sewage disposal methods include municipal treatment plants, septic systems, composting toilets, lago
1) The document discusses sustainable wastewater treatment, including categories of wastewater sources and types.
2) It describes the various stages of wastewater treatment - screening and primary treatment to remove solids, secondary treatment using biological processes, and tertiary treatment to remove additional contaminants.
3) Challenges in wastewater treatment are addressed, such as aging infrastructure and the need for funding, as well as solutions like upgrading pumps and optimizing aeration.
Waste Water Treatment and Types of Treatment UsedNetsolGroup
Waste Water Treatment Process and Types of treatment Used
Effluent Treatment Plant (ETP) / Sewage Treatment Plant to treat your wastewater which can be further reused
netsolwater_sewage treatment plant manufactre
The ETP, STP, demineralization plant, softeners, wastewater treatment plants, drinking water plants etc. the corporate features a huge number of clients list. the most aim of this company is to realize higher customer satisfaction by providing highest quality products and water services.
This document discusses wastewater treatment. It defines wastewater as liquid waste from industrial and sewage sources. The treatment process converts wastewater into effluent that can be safely returned to the water cycle or reused. The objectives of wastewater treatment are to reduce organic content, nutrients, and pathogens. The treatment process involves primary, secondary, and sometimes tertiary stages using various physical, biological, and chemical methods to clean the water. These include sedimentation, activated sludge, trickling filters, and oxidation ponds. The goal is to remove contaminants before discharging or reusing the treated effluent.
✓Waste water is a term that is used to describe waste material that includes....
Food scraps
Oil and soaps.
Human wastes.
Industrial wastes.
Sewage waste that is collected from urban areas.
WASTE WATER AND THEIR TREATMENT (PRIMARY, SECONDARY AND TERTIARY)
This document discusses industrial wastewater treatment processes. It describes the types of industrial effluent and provides an overview of common sewage treatment processes. These generally include pre-treatment to remove solids, primary treatment using sedimentation to remove settleable materials, secondary treatment using biological processes to break down organic matter, and sometimes tertiary treatment for advanced nutrient removal. The goal is to produce a treated effluent that is safe to release into the environment and a treated sludge that can be disposed of or reused.
Wastewater treatment plants use physical, biological, and chemical processes to remove contaminants from wastewater and produce clean water that can be returned safely to the environment. These processes include preliminary screening and settling to remove large particles, primary settling to remove solids, biological treatment using microorganisms to break down organic matter, secondary settling to remove biological solids, disinfection to kill pathogens, and solids processing including digestion and dewatering of sludge. The treated effluent water must meet regulatory standards before being discharged.
Details ppt on Effluent Treatment Plant or ETP for M Pharm.
In this Presentation we discuss about defination , design , need , Mechanism and many more important things related to ETP.
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Thank You.
The document discusses the sewage treatment process, which involves primary, secondary, and tertiary treatment stages to remove contaminants from wastewater. Primary treatment removes large solid materials, secondary treatment uses microorganisms to remove dissolved and suspended biological matter, and tertiary treatment provides additional treatment to further improve water quality before discharge. The sewage treatment process is important for protecting public health and the environment by producing effluent that is safe to release.
Similar to Building Material - wastewater treatment (20)
Precast concrete piles were used as the building component for the Petronas Twin Towers project in Malaysia. Precast concrete piles have advantages such as quality control during manufacturing, strength to resist forces, and ease of installation. However, they also have disadvantages like heavy weight requiring special equipment for handling and transportation, and noise pollution during pile driving. The construction process involves precasting the piles, transporting them to the site, and driving them into the ground using a pile driver until reaching the desired depth and load capacity. Quality control checks are done during manufacturing and installation to ensure specification compliance.
This document summarizes a student's visit to Niro Granite for an education trip. The student observed the showroom and gallery, noting the common materials used in construction like ceramic and porcelain tiles. Different tile types were photographed. Popular tile series at Niro include Portino, Antique, and Muse, which are used for both interior and exterior applications. The student learned it is important to select the right floor tiles for different uses, considering factors like cost, durability and aesthetics. The visit provided valuable knowledge about building materials.
Wastewater is any water that has been affected in quality from human and industrial activities. It can contain harmful contaminants if not treated properly before being released into the environment. Wastewater treatment involves multiple stages to remove solids, bacteria, nutrients and other pollutants from wastewater. This includes preliminary, primary, secondary and tertiary treatments using various filtration, settling and biological processes to clean the water for safe reuse or release. Proper wastewater management is important for public health and environmental protection.
This document is a site visit report for a construction project building two apartment blocks and a car park block. It describes the construction processes observed on site including column construction using formwork and reinforcement, beam construction using formwork and suspended reinforcement, slab formwork using table form systems, and reinforcement using BRC wire mesh. Photos from the site show equipment like scaffolding, reinforcement, cranes, and formwork. The report concludes the site visit provided students a practical understanding of construction techniques and safety practices.
The document summarizes the 1893 case Carlill v Carbolic Smoke Ball Co. It established that:
1) An offer of a unilateral contract can be made to the world at large through newspaper advertisements.
2) Acceptance of and consideration for a unilateral contract occurs through performance of specified actions, not through communication or payment.
3) The advertisement for the Carbolic Smoke Ball constituted a legitimate offer for a unilateral contract that Mrs. Carlill accepted and provided consideration for by using the product as directed and becoming ill, entitling her to the reward.
The document discusses factors that influence the cost of constructing a 3-storey shop-house with a 2-storey basement located in town. Five key factors are discussed: 1) accessibility to the site due to town location, 2) accessibility to resources, 3) security needs, 4) use of machinery and equipment like scaffolding, and 5) the material storage requirements. Each factor's characteristics and how it can increase costs, such as through additional labor, equipment rental, or construction delays, are described over the multiple pages. Underground services, the water table level, and soil conditions like clay are also outlined as cost considerations.
Central Market, Geo Hotel, and the LRT/Bus Station were the three focus areas analyzed. Central Market is a historic area with shops selling Malaysian handicrafts. It sees many local and tourist visitors on weekends. The Geo Hotel area has many vehicles and transportation options passing by daily. The LRT/Bus Station area sees a large concentration of people transferring between different transportation modes. It connects to the KTM station via a skybridge. Both transportation hub areas experience noise and smell pollution from nearby construction, drainage, and vehicles.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise boosts blood flow, releases endorphins, and promotes changes in the brain which help enhance one's emotional well-being and mental clarity.
The document provides instructions for a group project to propose improvements to an urban transportation hub and connectivity. Students must analyze the site, propose enhancements through drawings and models, and justify their suggestions with research. The proposal should address planning, public spaces, activities, facilities, transportation, connectivity, and sustainability. Students are required to create presentation boards, models at two scales, and a video explaining their project. They will be assessed based on the depth and communication of their research, ideas, and design work.
This document provides instructions for a group project involving a visit to Taman Negara National Park in Malaysia. Students will document their experiences through individual photo scrapbook journals and create an awareness poster as a group. The photo scrapbook should include observations, descriptions of plants/animals/environments, and reflections. As a group, students will create an informational pop-up poster bringing awareness to an environmental topic related to Taman Negara through diagrams and limited text. The project aims to increase students' appreciation of nature through first-hand experiences documented creatively in their scrapbooks and through the group's awareness poster.
This document provides an assignment brief for designing a catapult. Students will work in teams of 4 to design and construct either a Roman catapult or trebuchet using only found materials. The catapult must propel a tennis ball to hit cardboard boxes placed 10 meters away, and will be judged on criteria that will be provided by lecturers. Students have until August 24th to complete their catapult design and construction in preparation for a competition at the Taylor's University sports center.
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2. introduction
What is
wastewater?
• Originate from
homes, industrial
and factory waste,
commercial or
farming activities,
surface runoff or
storm water
• includes dissolved
contaminants,
suspended solids
and micro-
organisms.
Wastewaters can be
categorized as:
1. Domestic wastewater - used water
discharged from the residential,
commercial and industrial area of a
city and collected though the
sewage system.
2. Industrial wastewater - generated
from industries.
What is sustainable?
• The quality of wastewater not being
harmful to the environment or
depleting natural resources, and
thereby supporting long-term
ecological balance.
Types of wastewater systems:
1. Domestic wastewater system -processes
wastewater from a home, or group of homes.
2. Industrial wastewater system- processes
wastewater from an industrial unit, such as a
factory
What is sustainable
wastewater
treatment?
• Process that coverts
wastewater from its
unusable state into an
effluent that can be
either returned to the
water cycle with
minimal
environmental issues
or reused for another
purpose
3. Wastewater Issues:
1. High concentrations of the contamination
2. Health issues.
3. Salts in wastewater ( nitrates and phosphates )
discharged into natural waters
4. Pollution problems
The scale of wastewater
treatment systems:
1. Individual: serves separate
households, farms or
businesses
2. Cluster: designed so that
treatment of wastes serves
groups of households or
businesses, but not a whole
community
3. Central: usually designed so the
treatment of wastes for an
entire community is managed
at once in one place.
Why is the sustainable wastewater
management very important?
• Water is essential to life.
• To ensure that wastewater treatment procedures are put in
place to avoid problems with contamination, pollution,
spreading disease and poisoning.
• Reduce the level of pollutants in wastewater thus not
harming to human health or to the natural environment
4. process
There are four main
sections that the waste
water will pass through in
order to recycle back to
reusable water:
1. Preliminary Treatment
2. Primary Treatment
3. Secondary Treatment
4. Tertiary Treatment
5.
6. PRELIMINARY TREATMENT:
Preliminary treatment is a screening process that removes a lot of the solid
objects such as sticks, rocks, plastics, garbage, etc. they are collected,
removed from the waste water and disposed in a landfill.
A bar screener is a device with
openings (usually uniform in
size) to remove the floating
materials and suspended
particles.
7. PRIMARY TREATMENT:
After preliminary treatment, wastewater will reach the basin and is allowed to stay for a long period.
Resulting in heavy solids settling down and the much lighter substances such as oil and grease will
float on the surface. Then the chemical coagulant like alum is added here. Now smaller particles
will aggregate and form floc, which settle down easily. This eliminates settled and floating
materials in the primary treatment. Now the secondary treatment can begin. This process removes
about 40-60% of solid waste.
Grit chambers: To remove anything that is
“heavier” than the organic biodegradable
solids in the wastewater such as sand,
gravel & cinder.
Skimming tank: Greasy and oily materials
are removed by using a skimming tank.
Settling tank: Solid waste are allowed to
settle and be removed at the bottom of the
tank.
8. SECONDARY TREATMENT:
Now the wastewater is free from most physical contaminants, but
there are still suspended and biological contaminants. In this
stage biological treatment is used. Aeration tank provides oxygen
which allows the growth of aerobic bacteria. Secondary
treatment removes 85 percent or more of the organic matters in
sewage.
Secondary or biological
treatment is performed in a
tank where air is pumped in. It
contains starved microbes
called activated sludge that
require air to live.
Microorganisms in this aeration
tank use the dissolved and
particulate organic matter as
food, producing more
microorganisms. Therefore,
the waste materials are
converted into microorganisms
which can be collected and
separated from the water in the
secondary clarifier.
In the secondary clarifier, the
collected return activated
sludge are sent back to the
aeration tank and recycled.
9. TERTIARY TREATMENT:
The tertiary treatment specifically removes any component that was not removed in the previous
step. It varies depending on the industry. After this stage usable water is produced. The tertiary
treatment stage has the ability to remove up to 99 percent of the impurities from the wastewater.
This produces effluent water that is close to drinking water quality.
DISINFECTION
The wastewater must be
disinfected, with a
mixture of chlorine and
sodium hypochlorite. The
effluent (treated
wastewater) is later
released into the
environment through the
local waterways.
FILTRATION
Filtration which helps
primarily to remove
residual suspended
matter in wastewater.
Sand filtration is the
usual method that is
used for this purpose.
REMOVAL OF NUTRIENT
CONCENTRATION
Nutrients such Nitrogen and phosphorus
are usually found in high concentrations.
Nitrogen can be removed in the form of
ammonia is first oxidized to form nitrates
and then nitrates to nitrogen gas which is
released to the environment. On the other
hand, phosphorus can be removed
biologically as well by chemical
precipitation with salts of iron, aluminum,
or lime.
11. 1. The 2nd most
populated area in
Brazil
2. Host of the 2016
Summer Olympics
and the 2016
Summer Paralympics
3. Due to the events,
they have to reduce
the raw sewage
spilling into the
Guanabara Bay
which is located in
Southeast Brazil in
the state of Rio de
Janeiro.
1. Level of water
cleanliness is at a
critical point
2. Wastewater are left
untreated and bypass
into the sea.
3. The raw sewage and
garbage can be seen
floating in the water
4. The growth of
bacteria has
increased.
1) Building a new water waste
treatment plant based on a Dutch
technology known as the Nereda
technology
2) Nereda is technique for water
purification, based on a
technological solution which uses
aerobic granular mass.
3) Process treats wastewater by
using aerobic biological action to
purify it before returning clean
water to the environment.
4) The plan included 200km of new
sewage networks, 11 pumping
stations and connections for 25
thousand households.
Problems faced in
Rio:
About Rio de
Janeiro:
Solution to the problem:
12. Biomass in Nereda develops
as fast settling aerobic
granular sludge.
These granules have
excellent settling properties
and therefore Nereda does
not require a separate time-
consuming decant phase
like conventional SBR's.
Further, all the biological
treatment processes take
place simultaneously in the
granules, requiring only one
tank.
1. Named: Deodoro
WwTp- the largest
Nereda plant built so far
anywhere in the world
and the first of its kind in
South America, with a
further five planned in
Brazil.
2. Treat eventually the
wastewater of 480,000
people, the equivalent to
86,400m3 per day.
3. With 10 times the
capacity of the original
plant, the flow of
domestic sewage into
the local rivers and bay
has been massively
reduced.
How does Nereda
works ?
The outcome:
13. • Demand for water is unlimited-important in
our daily routine
• It is predicted that 1 litre of untreated
wastewater can pollute 8 litres of
freshwater
• Therefore ,efficient wastewater
management is important to help remove
harmful waste, microorganism and
chemicals in a water supply
• Fish and wildlife will be protected by the
uncontaminated streams or lake .
• Unwanted event such as storm water can
be prevented
advantages
• During the wastewater
treatment process, the
sludge is collected,
treated by anaerobic
bacteria
• These anaerobic
microorganism carries
out anaerobic process
in the absence of
oxygen
• Methane gas - to
generate electricity
• Reduce the
dependence on non-
renewable energy such
as fossil fuels
• Untreated water that
contain bacteria
,viruses and chemicals
would cause harmful
effect to people that
consume it
• Diseases -dysentery,
typhoid , and cholera.
• Thus ,wastewater
treatment plant is able
to remove 97% of
contaminants in water
• These contaminants
will be filtered to ensure
no bacteria or
pathogens are present.
Energy
Production Preserve & protect natural
environment
Prevention of
diseases
14. • Wastewater treatment system is expensive
• Government will have high expenditure for
installation of wastewater treatment
Up-front planning of wastewater treatment
plant infrastructure which includes planning
concepts, designs, and regulatory
requirements for your project
High labour cost when recruiting
professionals who are well-versed in this
field. They are knowledgeable on method
and procedures to operate the machineries
Regulatory cost in terms of waste disposal.
Prior to discharging any waste, you’ll need
to ensure your facility have approval to
release waste, otherwise you will be fined
disadvantages
• Chemical substances are
important to treat the
wastewater
• If proper measures are not
taken during the disinfection in
chemical unit processes, there
can be too much chlorine in the
water
• If waste product not discharged
or handled effectively, it can
cause environmental impacts
to wildlife in sea
• Thus, government should
involve in research and
development on minimizing
harmful waste product
• Many countries have
poor wastewater
treatment system that
cannot purified the
water sufficiently
• So there might be
presence of
pathogens and
bacteria in water
• Therefore, an
outbreak of water-
borne disease such
as typhoid and
cholera
• In that case , each
household usually
overcome this
problem by installing
a water filter at home
to have cleaner water
Health concern
High Capital cost
Various chemical
substances &
waste product
from process
15. • This applies throughout a treatment plant, both for
maintenance activities and routine operations, and
also unscheduled maintenance tasks.
• At the other end of the scale, an anaerobic digester
can build up sediment in it over time, reactor space
will then be slowly diminished and impact the
performance
• The task of taking the digester offline and removing
the sediment is unpleasant, time-consuming and
costly one.
• Electricity cost is expected to increase over the
years as the number of plot ratio and density of
developments within regional wastewater treatment
plant keeps increasing more than is allowable in
urban areas to connect to the existing sewer line.
possible problems
Incur High Cost
16. • Wastewater treatment systems is one of the
source of greenhouse gas emissions.
• Greenhouse gas emissions contribute to global
warming and climate change.
• Emission of CO2 due to degradation of organic
matters
• Emission of N2O during the process of
nitrification and denitrification
• Emissions of CH4 and N2O from anaerobic
digestion during sludge treatment
• Indirect emissions from sludge treatment
• Usage of electrical power and chemicals during
the operation and maintenance of the treatment
plant and disposal of sludge.
• Production and transportation of construction
materials
Greenhouse GasHuman Health Risk
• Wastewater that are not treated well in the
wastewater treatment system can spread
disease and contaminate drinking water
sources through bacteria viruses and
disease-causing pathogens.
• Pollutants that can be found in wastewater
are chemical contaminants such as
chlorine compounds and toxic metals such
as mercury, lead and cadmium.
• Bacteria, viruses, and parasites (including
worms and protozoans) are hazardous to
humans.
- Pollute beaches
- Contaminate shellfish populations
- Causes restrictions on human recreation
- Drinking water consumption and
shellfish consumption are restricted as
well
17. Using Anaerobic
Biological Treatment to
replace Aerobic Biological
Treatment
• Increase the potential of reduce
the energy demand at a
treatment works
• Uses less energy than aerobic
treatment
• Biogas produced can be used for
Ammonia in wastewater act as a renewable
energy sources
• converted to electricity in an alkaline fuel cell, or decomposed
to provide hydrogen for a non-alkaline fuel cell
• potential at wastewater treatment plants to use the ammonia
as a fuel source to produce electrical energy
future improvements
Using Landfill gas energy
technologies to capture
renewable energy
• process of landfill gas recovery
and use is similar to that of
recovering methane from
anaerobic digesters
• could be applied to water and
wastewater treatment facilities
situated near landfills
SBR stands for sequencing batch reactors. They are a type of activated sludge process for the treatment of wastewater.
Deodoro wastewater treatment plant
exposure to these metals and chemicals may have an impact on human body system
For example, it can cause damage to the nervous system, leading to slowness and behavioral changes/poor concentration.