Wastewater Treatment
Biological Wastewater Treatment
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Biological Wastewater treatment
Edited by: Dr. Rehan Mohamed Mounir
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Wastewater Treatment
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Sewer Design Guide
Abstract:
the Sewer Design Guide is a guide for the engineer when planning and designing wastewater facilities and should be used for both public facilities and private facilities which serve multiple lots. This guide summarizes and outlines relevant City policies, applicable codes, and engineering and operational practices and procedures that have been developed in an effort to establish a cost-effective, reliable, and safe wastewater collection system. Also to be considered and used in conjunction with this design guide are all applicable current standard drawings, specifications, codes, laws and industry requirements for the planning and design of wastewater infrastructures
Sewer Design Guide
Abstract:
the Sewer Design Guide is a guide for the engineer when planning and designing wastewater facilities and should be used for both public facilities and private facilities which serve multiple lots. This guide summarizes and outlines relevant City policies, applicable codes, and engineering and operational practices and procedures that have been developed in an effort to establish a cost-effective, reliable, and safe wastewater collection system. Also to be considered and used in conjunction with this design guide are all applicable current standard drawings, specifications, codes, laws and industry requirements for the planning and design of wastewater infrastructures
Advanced wastewater treatment for separation and removal of pharmaceutical residues and other hazardous substances
The Swedish Environmental Protection Agency (EPA) has determined a need to introduce advanced treatment for pharmaceutical residues in wastewater. An additional benefit of such a treatment is that it would also include the treatment of other hazardous substances.The extent to which pharmaceutical residues risk becoming a problem depends on local conditions such as the sensitivity of the receiving waters. While this is an important variable to consider, the Swedish EPA believes that the sensitivity of the receiving waters should not be the only consideration when setting requirements for treatment. The amount of released pharmaceutical residues and long-term effects should also be considered in decision making and justification. The investment and operational costs of introducing advanced treatment depend in part on the size and current capacity of treatment facilities, which is why size limitations can be an additional consideration when setting requirements.
Advanced wastewater treatment for separation and removal of pharmaceutical residues and other hazardous substances
The Swedish Environmental Protection Agency (EPA) has determined a need to introduce advanced treatment for pharmaceutical residues in wastewater. An additional benefit of such a treatment is that it would also include the treatment of other hazardous substances.The extent to which pharmaceutical residues risk becoming a problem depends on local conditions such as the sensitivity of the receiving waters. While this is an important variable to consider, the Swedish EPA believes that the sensitivity of the receiving waters should not be the only consideration when setting requirements for treatment. The amount of released pharmaceutical residues and long-term effects should also be considered in decision making and justification. The investment and operational costs of introducing advanced treatment depend in part on the size and current capacity of treatment facilities, which is why size limitations can be an additional consideration when setting requirements.
Lesson D1 Guidelines and Standards for Wastewater Reuse
Due to water shortage, wastewater reuse has gained great importance in many parts of the world. Wastewater reuse practices have become valuable source in water resources management. As an independent source of water, reclaimed water can increase the reliability of water supply. Reclaimed wastewater requires effective measures to protect public health and the environment. Strong wastewater reuse guidelines and regulations are developed for the purpose. It is difficult to establish wastewater guidelines and regulations that can suit all regions in the world. Among the broad reasons for this as limiting factors, are economics of countries relating chosen treatment technologies and additionally, the local context of a region must be taken into consideration in settings. Almost all wastewater reuse guidelines and regulations are bacteriological-based. Some of them consider biochemical parameters. In this lesson you will comprehend the importance as well as the necessity of setting wastewater reuse guidelines and regulations. You will be aware of arising problems
for getting universal valid standards. You will get an overview of guidelines and regulations existing worldwide and regionally.
Lesson D1 Guidelines and Standards for Wastewater Reuse
Due to water shortage, wastewater reuse has gained great importance in many parts of the world. Wastewater reuse practices have become valuable source in water resources management. As an independent source of water, reclaimed water can increase the reliability of water supply. Reclaimed wastewater requires effective measures to protect public health and the environment. Strong wastewater reuse guidelines and regulations are developed for the purpose. It is difficult to establish wastewater guidelines and regulations that can suit all regions in the world. Among the broad reasons for this as limiting factors, are economics of countries relating chosen treatment technologies and additionally, the local context of a region must be taken into consideration in settings. Almost all wastewater reuse guidelines and regulations are bacteriological-based. Some of them consider biochemical parameters. In this lesson you will comprehend the importance as well as the necessity of setting wastewater reuse guidelines and regulations. You will be aware of arising problems
for getting universal valid standards. You will get an overview of guidelines and regulations existing worldwide and regionally.
Discharge quality from municipal wastewater treatment plants and the Sludge Biotic Index for activated sludge: integrative assessment
Abstract
Wastewater treatment plants (WWTPs) are scrutinized by Environmental Authorities particularly regarding the compliance to discharge limit values fixed by national and local regulations. An integrated approach is necessary to achieve the objectives established with Directive 2000/60/EC (WFD) considering the ecological status of the receiving water body and the quality of the discharge. Specifically, documentary, technical, management and analytical controls should be developed. Moreover, integrative information on the behaviour of the activated sludge in the aeration tank can be useful for plant managers as well as for the regulating Authorities. The study presents the experience concerning WWTP regulation considering the analytic assessment of the discharge as well the monitoring of the Sludge Biotic Index (SBI) for activated sludge. Data from monitoring during the period 2008–14 on SBI values and chemical and microbiological data on the discharges of a sample of 35 WWTPs in the province of Venice (north-east Italy, Veneto region) are presented and discussed. Together with chemical and microbiological analysis, the SBI appears to be a highly useful index for the integrative assessment of plant functionality, in particular when monitoring and identifying critical situations that can determine the exceedance of discharge limit values. The SBI method, in an integrated control approach, can be used for small and medium sized WWTPs that only treat domestic wastewaters. In a case by case assessment this may even substitute part of the analytical monitoring carried out in the WWTPs' control process.
Discharge quality from municipal wastewater treatment plants and the Sludge Biotic Index for activated sludge: integrative assessment
Abstract
Wastewater treatment plants (WWTPs) are scrutinized by Environmental Authorities particularly regarding the compliance to discharge limit values fixed by national and local regulations. An integrated approach is necessary to achieve the objectives established with Directive 2000/60/EC (WFD) considering the ecological status of the receiving water body and the quality of the discharge. Specifically, documentary, technical, management and analytical controls should be developed. Moreover, integrative information on the behaviour of the activated sludge in the aeration tank can be useful for plant managers as well as for the regulating Authorities. The study presents the experience concerning WWTP regulation considering the analytic assessment of the discharge as well the monitoring of the Sludge Biotic Index (SBI) for activated sludge. Data from monitoring during the period 2008–14 on SBI values and chemical and microbiological data on the discharges of a sample of 35 WWTPs in the province of Venice (north-east Italy, Veneto region) are presented and discussed. Together with chemical and microbiological analysis, the SBI appears to be a highly useful index for the integrative assessment of plant functionality, in particular when monitoring and identifying critical situations that can determine the exceedance of discharge limit values. The SBI method, in an integrated control approach, can be used for small and medium sized WWTPs that only treat domestic wastewaters. In a case by case assessment this may even substitute part of the analytical monitoring carried out in the WWTPs' control process.
Module 16 : Activated Sludge Process- Part 2
•List the key monitoring points within the activated sludge process and explain what to look for at those points.
•List five key process control parameters and for each parameter, explain what it is, why it is used and how it is calculated
•List the daily process control tasks that need to be accomplished and explain how to perform them.
Module 16 : Activated Sludge Process- Part 2
•List the key monitoring points within the activated sludge process and explain what to look for at those points.
•List five key process control parameters and for each parameter, explain what it is, why it is used and how it is calculated
•List the daily process control tasks that need to be accomplished and explain how to perform them.
Advanced Treatment Technologies For Recycle/Reuse Of Domestic Wastewater
Conventional wastewater treatment technologies improve the quality of wastewater discharged into the environment and restrain polluted waters from contaminating other available clean water resources. However, these treatment technologies do not make wastewater fit for further beneficial uses in communities closer to the points of generation. Innovative and advanced technologies that can further improve the quality of wastewater are needed to overcome this limitation of conventional technologies, and to promote widespread adoption of recycle and reuse practices. Advanced treatment processes can be biological processes, physicochemical processes, or a combination of both (hybrid processes). Biological processes to remove nutrient pollutants such as nitrogen and phosphorus, provide the platform for further wastewater treatment to reusable quality. Physicochemical processes such as deep-bed filtration, floating media filtration, and membrane filtration, play a major role among treatment technologies for water reuse. Membrane filtration has significant advantages over other processes since they produce high quality effluent that requires little or no disinfection with minimum sludge generation. The hybrid processes attempt to obtain the benefits of both biological and physicochemical processes in one step.
Advanced Treatment Technologies For Recycle/Reuse Of Domestic Wastewater
Conventional wastewater treatment technologies improve the quality of wastewater discharged into the environment and restrain polluted waters from contaminating other available clean water resources. However, these treatment technologies do not make wastewater fit for further beneficial uses in communities closer to the points of generation. Innovative and advanced technologies that can further improve the quality of wastewater are needed to overcome this limitation of conventional technologies, and to promote widespread adoption of recycle and reuse practices. Advanced treatment processes can be biological processes, physicochemical processes, or a combination of both (hybrid processes). Biological processes to remove nutrient pollutants such as nitrogen and phosphorus, provide the platform for further wastewater treatment to reusable quality. Physicochemical processes such as deep-bed filtration, floating media filtration, and membrane filtration, play a major role among treatment technologies for water reuse. Membrane filtration has significant advantages over other processes since they produce high quality effluent that requires little or no disinfection with minimum sludge generation. The hybrid processes attempt to obtain the benefits of both biological and physicochemical processes in one step.
Innovative Process for Granulation of Continuous Flow Conventional Activated Sludge
The objective of this presentation is to:
• Introduce Aerobic Granular Sludge (AGS), including mechanisms for formation and benefits
• Present performance data for a Nereda® SBR pilot
• AECOM’s continuous-flow granular sludge process for BNR infra-stretching or footprint reductions
Innovative Process for Granulation of Continuous Flow Conventional Activated Sludge
The objective of this presentation is to:
• Introduce Aerobic Granular Sludge (AGS), including mechanisms for formation and benefits
• Present performance data for a Nereda® SBR pilot
• AECOM’s continuous-flow granular sludge process for BNR infra-stretching or footprint reductions
A study on The Removal of Some Phenolic Compounds from Wastewater
ABSTRACT:
The removal by means of Advanced Oxidation Processes (AOPs) is an attractive option for the treatment of industrial wastewater containing phenolic compounds in an environmental . The present work would summarize some AOPs technologies focusing only on heterogeneous catalytic removal of phenol and highlighting the catalysts activity and reaction conditions. The catalysts used were H ZSM-5,H-Mordenite and Bentonite. H-ZSM-5,H-Mordenite doped with Platinum (Pt) were prepared and characterized by using X-ray diffraction analysis (XRD), thermal analysis, Scanning electron microscopy, High Resolution Transmission electron microscopy, pluse titration measurements, nitrogen adsorption desorption at -196°C. the experimental parameters affecting the removal efficiency were time, temperature, pH, initial phenol concentrations, catalyst dose and the effect of irradiating with Ultraviolet (UV –C) were studied . The optimum conditions for the removal of each catalyst were investigated .
A study on The Removal of Some Phenolic Compounds from Wastewater
ABSTRACT:
The removal by means of Advanced Oxidation Processes (AOPs) is an attractive option for the treatment of industrial wastewater containing phenolic compounds in an environmental . The present work would summarize some AOPs technologies focusing only on heterogeneous catalytic removal of phenol and highlighting the catalysts activity and reaction conditions. The catalysts used were H ZSM-5,H-Mordenite and Bentonite. H-ZSM-5,H-Mordenite doped with Platinum (Pt) were prepared and characterized by using X-ray diffraction analysis (XRD), thermal analysis, Scanning electron microscopy, High Resolution Transmission electron microscopy, pluse titration measurements, nitrogen adsorption desorption at -196°C. the experimental parameters affecting the removal efficiency were time, temperature, pH, initial phenol concentrations, catalyst dose and the effect of irradiating with Ultraviolet (UV –C) were studied . The optimum conditions for the removal of each catalyst were investigated .
A Review of Electrocoagulation Process for Wastewater Treatment
The control of environmental pollution and also the treatment of polluted water are of great concern. Within the past decade, electrochemical coagulation process has emerged as most effective wastewater treatment process as compared to conventional techniques of treating wastewater. Electrocoagulation is robust, cost effective, reliable, low sludge generating process, it has automation amenability and it has high pollutant removal efficiency. The aim of the review is to explain the basics and up to date advancement of electrocoagulation method for the improvements in the pollutant removal efficiency.
A Review of Electrocoagulation Process for Wastewater Treatment
The control of environmental pollution and also the treatment of polluted water are of great concern. Within the past decade, electrochemical coagulation process has emerged as most effective wastewater treatment process as compared to conventional techniques of treating wastewater. Electrocoagulation is robust, cost effective, reliable, low sludge generating process, it has automation amenability and it has high pollutant removal efficiency. The aim of the review is to explain the basics and up to date advancement of electrocoagulation method for the improvements in the pollutant removal efficiency.
Aerated Ponds
The content of this technical sheet on “aerated ponds” is based primarily on the following publications:
“Aerated Pond”, compiled by Eawag (Swiss Federal Institute of Aquatic Science and Technology),
Dorothee Spuhler (international Gmbh) published on SSWM (http://www.sswm.info) (2015).
“Aerated, partial mix lagoons”, Technology Fact Sheet 832-F-02-008, published by U.S. EPA (2002).
“Principles of design and operations of wastewater treatment pond systems for plant operators,
engineers, and managers”, EPA/600/R-11/088, published by U.S. EPA (August 2011).
Aerated Ponds
The content of this technical sheet on “aerated ponds” is based primarily on the following publications:
“Aerated Pond”, compiled by Eawag (Swiss Federal Institute of Aquatic Science and Technology),
Dorothee Spuhler (international Gmbh) published on SSWM (http://www.sswm.info) (2015).
“Aerated, partial mix lagoons”, Technology Fact Sheet 832-F-02-008, published by U.S. EPA (2002).
“Principles of design and operations of wastewater treatment pond systems for plant operators,
engineers, and managers”, EPA/600/R-11/088, published by U.S. EPA (August 2011).
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