Innovative Wastewater Treatment, Recycling, Sludge Management and Zero Liquid Discharge Solutions Worldwide
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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).
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.
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.
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
A Ground-Breaking Innovation In Wastewater Treatment
The fashion industry contributes 20% of industrial water pollution With a high water footprint, massive chemical use and atmospheric, water and greenhouse gas (GHG) emissions, dyehouse operations are the most environmentally damaging component of the apparel supply chain2.Global brands are responding by requiring manufacturers to treat wastewater and reduce effluent. Paradoxically, conventional water treatment systems generate toxic sludge, trading water pollution for solid, chemical discharge that is landfilled and emits GHG – mostly methane.
A Ground-Breaking Innovation In Wastewater Treatment
The fashion industry contributes 20% of industrial water pollution With a high water footprint, massive chemical use and atmospheric, water and greenhouse gas (GHG) emissions, dyehouse operations are the most environmentally damaging component of the apparel supply chain2.Global brands are responding by requiring manufacturers to treat wastewater and reduce effluent. Paradoxically, conventional water treatment systems generate toxic sludge, trading water pollution for solid, chemical discharge that is landfilled and emits GHG – mostly methane.
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.
Module 15: The Activated Sludge Process – Part 1
•Describe the activated sludge process and its control variables.
•List List three types of activated sludge treatment plants.
Module 15: The Activated Sludge Process – Part 1
•Describe the activated sludge process and its control variables.
•List List three types of activated sludge treatment plants.
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