Zero Liquid Discharge System
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Installing non-compatible Zero Liquid Discharge System to comply with Prescribed Norms imposed by State Pollution Control Board is simply equal to non-compliance of the same. To get the best possible solution for actual ZLD, Contact Us www.envirochemservices.in
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Zero liquid discharge
This document discusses zero liquid discharge (ZLD) systems. It provides background on the need for ZLD due to water scarcity issues. It then describes the key steps in a ZLD process, which involves pre-treatment, evaporation, and crystallization to separate water for reuse from solids for disposal. Common technologies used are reverse osmosis, mechanical vapor recompression, and multiple effect evaporators. The document concludes with two case studies of industries that have implemented ZLD systems successfully.
Zero Liquid Discharge Technology - UPL
Zero liquid discharge (ZLD) is a wastewater management technique that eliminates liquid waste discharge going outside of operating plants. This has attracted renewed interest worldwide in recent years.
Zero liquid discharge
The document provides an overview of zero liquid discharge (ZLD) technologies. It discusses:
1) ZLD refers to recycling and treating wastewater such that no liquid is discharged, eliminating pollution. It involves concentrating effluent and converting solutes to solid residue.
2) Key ZLD technologies include solvent extraction, membrane bioreactors, ultrafiltration/reverse osmosis, evaporation like falling film evaporators, and agitated thin film dryers.
3) Challenges include a lack of technical guidance, complex wastewater streams, and needing integrated technologies for reduce, recycle, recovery and reuse.
Effluent Treatment Plant Design, Operation And Analysis Of Waste Water
Contents
1. Introduction to Effluent Treatment Plant (ETP)
1.1 Use of water in industries
1.2 Industrial waste water sources
1.3 Effluent Treatment Plant
1.4 National Standards for waste water
1.5 What do these standards means?
1.6 Waste water treatment
1.7 Planning an Effluent Treatment Plant : Factors to Consider
2. Treatment Methods
2.1 Physical Unit Operations
2.2 Chemical Unit Processes
2.3 Biological Unit Processes
3. Operation and control
3.1 Mixed liquor suspended solids
3.2 Sludge Volume Index and Sludge Density Index
3.3 Sludge Age; Mean Cell Residence Time (MCRT)
3.4 Food/Mass Ratio
3.5 Constant MLSS
3.6 Return Activated Sludge Control (RAS)
4. Choosing an Effluent Treatment Plant
4.1 Biological Treatment
4.2 Physico-Chemical Treatment
4.3 Physico-Chemical and Biological Treatment
4.4 Area Requirement Comparison
4.5 Cost Comparison
5. Chemical Analysis of Waste Water
5.1 Commonly used chemicals
5.2 Chemical Tests and procedures
Final PPT
This document provides an overview of zero liquid discharge (ZLD) processes for the pulp and paper industry. It discusses how ZLD helps industries reduce wastewater generation and reuse water, outlines the key steps in a ZLD system including membrane filtration and crystallization, and examines a case study of a successful ZLD pilot plant for an Indian paper mill that recovered 93.7% of waste and reduced TDS levels by 96%. The document also notes challenges like high energy costs, and looks at incentives to promote wider ZLD adoption.
zero effluent discharge system
The document discusses zero effluent discharge systems. It provides an introduction and overview of zero effluent discharge, including the need for such systems, their benefits, drivers and challenges. It then discusses specific applications for zero effluent discharge in industries like textiles. The document focuses on zero effluent discharge treatment of textile wastewater, outlining the key treatment steps and environmental challenges.
ZLD.ppt-Aquatech. Delhi 2015
Zero liquid discharge (ZLD) refers to systems that enable absolute recycling of treated wastewater and conversion of dissolved solids into solid residue through concentration and thermal evaporation. ZLD certification is based on water consumption, wastewater recycled, and solids recovered. Conventional ZLD uses multi-effect evaporation, but this requires high steam consumption. A new technology called polymeric film evaporation uses polymer films as the heat transfer surface, achieving lower operating costs than multi-effect evaporation through reduced steam and power usage. This polymeric film evaporation technology provides benefits like low maintenance and scaling resistance.
cetp
This document provides an overview of common effluent treatment plants (CETPs) in India. It discusses how CETPs were originally promoted to reduce wastewater treatment costs for small and medium industries. It then describes the typical wastewater treatment processes used at CETPs, including preliminary treatment, primary treatment, secondary treatment and tertiary treatment. The document also discusses advantages and disadvantages of CETPs, different disposal methods for treated wastewater, and provides case studies of three CETPs in India.
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Zero liquid discharge
This document discusses zero liquid discharge (ZLD) systems. It provides background on the need for ZLD due to water scarcity issues. It then describes the key steps in a ZLD process, which involves pre-treatment, evaporation, and crystallization to separate water for reuse from solids for disposal. Common technologies used are reverse osmosis, mechanical vapor recompression, and multiple effect evaporators. The document concludes with two case studies of industries that have implemented ZLD systems successfully.
Zero Liquid Discharge Technology - UPL
Zero liquid discharge (ZLD) is a wastewater management technique that eliminates liquid waste discharge going outside of operating plants. This has attracted renewed interest worldwide in recent years.
Zero liquid discharge
The document provides an overview of zero liquid discharge (ZLD) technologies. It discusses:
1) ZLD refers to recycling and treating wastewater such that no liquid is discharged, eliminating pollution. It involves concentrating effluent and converting solutes to solid residue.
2) Key ZLD technologies include solvent extraction, membrane bioreactors, ultrafiltration/reverse osmosis, evaporation like falling film evaporators, and agitated thin film dryers.
3) Challenges include a lack of technical guidance, complex wastewater streams, and needing integrated technologies for reduce, recycle, recovery and reuse.
Effluent Treatment Plant Design, Operation And Analysis Of Waste Water
Contents
1. Introduction to Effluent Treatment Plant (ETP)
1.1 Use of water in industries
1.2 Industrial waste water sources
1.3 Effluent Treatment Plant
1.4 National Standards for waste water
1.5 What do these standards means?
1.6 Waste water treatment
1.7 Planning an Effluent Treatment Plant : Factors to Consider
2. Treatment Methods
2.1 Physical Unit Operations
2.2 Chemical Unit Processes
2.3 Biological Unit Processes
3. Operation and control
3.1 Mixed liquor suspended solids
3.2 Sludge Volume Index and Sludge Density Index
3.3 Sludge Age; Mean Cell Residence Time (MCRT)
3.4 Food/Mass Ratio
3.5 Constant MLSS
3.6 Return Activated Sludge Control (RAS)
4. Choosing an Effluent Treatment Plant
4.1 Biological Treatment
4.2 Physico-Chemical Treatment
4.3 Physico-Chemical and Biological Treatment
4.4 Area Requirement Comparison
4.5 Cost Comparison
5. Chemical Analysis of Waste Water
5.1 Commonly used chemicals
5.2 Chemical Tests and procedures
Final PPT
This document provides an overview of zero liquid discharge (ZLD) processes for the pulp and paper industry. It discusses how ZLD helps industries reduce wastewater generation and reuse water, outlines the key steps in a ZLD system including membrane filtration and crystallization, and examines a case study of a successful ZLD pilot plant for an Indian paper mill that recovered 93.7% of waste and reduced TDS levels by 96%. The document also notes challenges like high energy costs, and looks at incentives to promote wider ZLD adoption.
zero effluent discharge system
The document discusses zero effluent discharge systems. It provides an introduction and overview of zero effluent discharge, including the need for such systems, their benefits, drivers and challenges. It then discusses specific applications for zero effluent discharge in industries like textiles. The document focuses on zero effluent discharge treatment of textile wastewater, outlining the key treatment steps and environmental challenges.
ZLD.ppt-Aquatech. Delhi 2015
Zero liquid discharge (ZLD) refers to systems that enable absolute recycling of treated wastewater and conversion of dissolved solids into solid residue through concentration and thermal evaporation. ZLD certification is based on water consumption, wastewater recycled, and solids recovered. Conventional ZLD uses multi-effect evaporation, but this requires high steam consumption. A new technology called polymeric film evaporation uses polymer films as the heat transfer surface, achieving lower operating costs than multi-effect evaporation through reduced steam and power usage. This polymeric film evaporation technology provides benefits like low maintenance and scaling resistance.
cetp
This document provides an overview of common effluent treatment plants (CETPs) in India. It discusses how CETPs were originally promoted to reduce wastewater treatment costs for small and medium industries. It then describes the typical wastewater treatment processes used at CETPs, including preliminary treatment, primary treatment, secondary treatment and tertiary treatment. The document also discusses advantages and disadvantages of CETPs, different disposal methods for treated wastewater, and provides case studies of three CETPs in India.
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The Effluent Treatment Plants [ETP] plant is designed to treat the effluent coming from various areas of the plant. The treatment of different effluents varies with the type of effluent. Industrial wastewater contains a diversity of impurities and therefore for this reason alone, its treatment establishes a special task. Shubham Inc. offers comprehensive range of Effluent Treatment Plants that is highly effective.
The complete treatment solution works at many levels and comprises of different physical, chemical, biological and membrane processes. For reducing the BOD, COD, color, nitrogen and toxic level of the effluent, SHUBHAM is offeringa various solutions from ASP (activated sludge process) to advance Membrane technologies as per treated water uses.Shubham OffersCustomized systems to suit the extensive variety of effluents and to maintain efficiency are provided to industries.
We provide innovative and economical systems for waste withexpertise is advantageously employed for the technical and economic optimization of every subsequent facility.
SHUBHAM INC use the best-in-class technology and cutting-edge tools to foster high-quality, sustainable, community-level water supply sewage treatment plant and Effluent Treatment Plants projects in Gujarat, India across the ahmedabad, Surat, Rajkot and Baroda.
Some processes followed by us are:
• Aerobic Biological Process
• Anaerobic Biological Process
• Chemical-physical process
TREATMENT REQUIREMENTS:
1. Oil & grease Separation
2. Neutralization of Acids and Alkali
3. Removal of Suspended Solids
4. Reduction & Removal of metallic impurities
5. Reduction of high organic content: BOD, COD, P, TKN, etc.
6. Dissolve impurities for ZLD system.
TREATMENT METHODS
• Primary clarifications
• Biological process
• Secondary clarifications.
• Tertiary treatment
• Polishing units i.e. UF, RO and DM (Optional for recycling or ZLD)
Applications:
• Textile Industries
• Distilleries
• Pharmacy Industries.
• Chemical Industries
• Paper Industries
• Tannery Industries
• Dye & Dye Intermediaries
• Edible Oil Refineries
• Electroplating Industries
Features:
• Sturdy construction
• Resistant to corrosion
• Superior performance
• Rapid installation
• Less civil work involved
• Flexible in reworkingMbbr
The document provides an overview of moving bed biofilm reactors (MBBR) for wastewater treatment. It discusses the history and introduction of MBBR technology, key designing parameters such as media size and surface area, and operating parameters like retention times and loading rates. An example design for a 600 cubic meter per day MBBR wastewater treatment plant is presented, outlining the treatment process flow including aeration, settling, and disinfection. Finally, the document reviews a paper comparing the treatment performance of MBBR versus conventional activated sludge systems.
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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.
Common effluent treatment plant
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.
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The document discusses concept of common effluent treatment plants (CETPs) in India. It provides background on CETPs, noting that over 18 are operating efficiently in Gujarat, improving the state's environmental management. The largest CETP in Vapi has a capacity of 55,000 cubic meters per day. Advantages of CETPs include not requiring individual industry investment or technical expertise, achieving dilution from multiple waste streams, and reducing treatment and neutralization costs. Challenges include limitations from capacity, unpredictable mixtures, impacts from non-compliant members, and potential for toxic components to pass through unmodified. Technical aspects of establishing CETPs include collection systems, design and treatment options, effluent disposal,
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Effluent treatment Plant covers the mechanisms and processes used to treat such waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use.
Harards of oily waste & its management
The document summarizes the hazards of oily waste and methods for its remediation. It discusses how oily sludge generated at oil installations is considered hazardous waste. Current practices for managing sludge involve reducing its volume through melting and recovering oil, but residual sludge remains a disposal challenge. Bioremediation is presented as an environmentally-friendly option where microbes break down oil in sludge into harmless substances. The document also reviews other disposal methods like incineration and concludes that bioremediation research aims to make the process cleaner and more effective at degrading hazardous constituents.
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Activated Sludge
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Flotation
WASTE WATER TREATMENT REFINERIES
With rising crude prices and depleting quality of crude, however, the level of wastewater pollutants in petroleum wastewater is at new high. Such conditions are forcing refineries to use a more advanced water treatment, water recovery methods, and robust processes that work well under a variety of conditions and can handle the changing refinery effluent flow rates. Finally a process that is economical in overall life time cost is needed to make all of this feasible. Aquatech has experience working with these refinery effluent pollutants in the refinery market and offers the advanced petroleum wastewater treatment and recovery technology necessary for the refinery’s needs.
Dissolve air flotation technology to treat highly polluted wastewater
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This Presentation contains Importance of ZLD, What is ZLD, Challenges in ZLD and a case study of a pulp and paper Industry named "Tamil Nadu Newsprint and Papers Limited, Karur Tamil Nadu"
Treatment of Industrial Oily Waste Water
The document summarizes a study on treating oily wastewater from a metal industry's cutting fluid in Indore City, India. The study tested various coagulants for removing total suspended solids (TSS), total dissolved solids (TDS), and oil and grease. Poly aluminum chloride was found to be the most effective coagulant, removing up to 89.6% of TSS, 42.2% of TDS, and 88.8% of oil and grease. Acidification of the wastewater to pH 4 prior to coagulation treatment was found to maximize oil removal. The study concludes that chemical treatment using coagulation after acidification is an effective way to remove contaminants from o
STP Operation Presentation
This document provides an overview of water issues and sewage treatment processes. It discusses the global water crisis, reasons for water scarcity in India like increasing demand and decreasing supply. It then describes the various unit processes involved in sewage treatment like bar screens, neutralization, activated sludge process using aeration tanks and secondary clarifiers, and tertiary treatment using processes like filtration and UV disinfection. The importance of proper operation and maintenance of sewage treatment plants is also emphasized.
Zero Liquid Discharge
Zero Liquid Discharge (ZLD) is a process that treats wastewater to allow for reuse and recycling of water with no discharge. ZLD systems employ advanced treatment like evaporation and crystallization to purify wastewater. In India, certain industries are now required to implement ZLD to reduce water pollution. The textile industry in particular has experience with ZLD since 2008 when Tamil Nadu mandated it for dyeing plants. ZLD increases textile production costs by 6-10% due to high capital and operating expenses of the treatment systems.
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This document provides information on aerobic attached growth systems, specifically trickling filters. Key points include:
- Trickling filters are fixed film bioreactors that use media like rock or plastic to develop biofilms, treating wastewater as it trickles through the media.
- Wastewater flows over the biofilms, exposing them alternately to wastewater and air to facilitate treatment.
- Design considerations include media type, wastewater distribution, ventilation, and secondary clarification after treatment.
- Empirical equations are provided to help design trickling filters based on parameters like organic loading, temperature, media characteristics, and wastewater flow.
Water treatment by demineralisation
Reverse osmosis uses semi-permeable membranes to purify water by separating dissolved solids. It has various applications in water treatment and is used along with demineralization plants. A reverse osmosis system consists of pre-treatment, high-pressure pumps, membrane systems, and post-treatment. It produces permeate water while concentrating impurities in reject water. Demineralization uses ion exchange resins to remove mineral ions, producing very high purity water. Together, reverse osmosis and demineralization can purify water for various industrial and medical uses.
An introduction to electrocoagulation
This document provides an overview of electrocoagulation (EC) as a wastewater treatment process. It describes the basic EC process, which uses sacrificial anode dissolution to introduce metal ions into water that destabilize pollutants. Key factors that affect EC efficiency are discussed, including electrode arrangement, current density, pH, and electrode material. The document also outlines several applications of EC for treating various types of industrial wastewaters and waters containing pollutants like heavy metals, dyes, and organic matter. EC is presented as an effective wastewater treatment alternative that is simple to operate and can remove a wide range of pollutants.
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This market assessment report is a primer for Zero Liquid Discharge in India, which describes the current scenario, illustrates the outlook for 2020 and quantifies the market opportunity with a focus on three highly polluting and water intensive industries, i.e. Textile (wet processing), Distillery (molasses based) and Pulp & Paper (large wood based).
Zero Liquid Discharge
This market assessment report is a primer for Zero Liquid Discharge in India, which describes the current scenario, illustrates the outlook for 2020 and quantifies the market opportunity with a focus on three highly polluting and water intensive industries, i.e. Textile (wet processing), Distillery (molasses based) and Pulp & Paper (large wood based).
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The Effluent Treatment Plants [ETP] plant is designed to treat the effluent coming from various areas of the plant. The treatment of different effluents varies with the type of effluent. Industrial wastewater contains a diversity of impurities and therefore for this reason alone, its treatment establishes a special task. Shubham Inc. offers comprehensive range of Effluent Treatment Plants that is highly effective.
The complete treatment solution works at many levels and comprises of different physical, chemical, biological and membrane processes. For reducing the BOD, COD, color, nitrogen and toxic level of the effluent, SHUBHAM is offeringa various solutions from ASP (activated sludge process) to advance Membrane technologies as per treated water uses.Shubham OffersCustomized systems to suit the extensive variety of effluents and to maintain efficiency are provided to industries.
We provide innovative and economical systems for waste withexpertise is advantageously employed for the technical and economic optimization of every subsequent facility.
SHUBHAM INC use the best-in-class technology and cutting-edge tools to foster high-quality, sustainable, community-level water supply sewage treatment plant and Effluent Treatment Plants projects in Gujarat, India across the ahmedabad, Surat, Rajkot and Baroda.
Some processes followed by us are:
• Aerobic Biological Process
• Anaerobic Biological Process
• Chemical-physical process
TREATMENT REQUIREMENTS:
1. Oil & grease Separation
2. Neutralization of Acids and Alkali
3. Removal of Suspended Solids
4. Reduction & Removal of metallic impurities
5. Reduction of high organic content: BOD, COD, P, TKN, etc.
6. Dissolve impurities for ZLD system.
TREATMENT METHODS
• Primary clarifications
• Biological process
• Secondary clarifications.
• Tertiary treatment
• Polishing units i.e. UF, RO and DM (Optional for recycling or ZLD)
Applications:
• Textile Industries
• Distilleries
• Pharmacy Industries.
• Chemical Industries
• Paper Industries
• Tannery Industries
• Dye & Dye Intermediaries
• Edible Oil Refineries
• Electroplating Industries
Features:
• Sturdy construction
• Resistant to corrosion
• Superior performance
• Rapid installation
• Less civil work involved
• Flexible in reworkingMbbr
The document provides an overview of moving bed biofilm reactors (MBBR) for wastewater treatment. It discusses the history and introduction of MBBR technology, key designing parameters such as media size and surface area, and operating parameters like retention times and loading rates. An example design for a 600 cubic meter per day MBBR wastewater treatment plant is presented, outlining the treatment process flow including aeration, settling, and disinfection. Finally, the document reviews a paper comparing the treatment performance of MBBR versus conventional activated sludge systems.
Efflunt treatment plant ppt
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.
Common effluent treatment plant
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.
Module iii
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.
Concept of cetp
The document discusses concept of common effluent treatment plants (CETPs) in India. It provides background on CETPs, noting that over 18 are operating efficiently in Gujarat, improving the state's environmental management. The largest CETP in Vapi has a capacity of 55,000 cubic meters per day. Advantages of CETPs include not requiring individual industry investment or technical expertise, achieving dilution from multiple waste streams, and reducing treatment and neutralization costs. Challenges include limitations from capacity, unpredictable mixtures, impacts from non-compliant members, and potential for toxic components to pass through unmodified. Technical aspects of establishing CETPs include collection systems, design and treatment options, effluent disposal,
Design of effluent treatment plant
Effluent treatment Plant covers the mechanisms and processes used to treat such waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use.
Harards of oily waste & its management
The document summarizes the hazards of oily waste and methods for its remediation. It discusses how oily sludge generated at oil installations is considered hazardous waste. Current practices for managing sludge involve reducing its volume through melting and recovering oil, but residual sludge remains a disposal challenge. Bioremediation is presented as an environmentally-friendly option where microbes break down oil in sludge into harmless substances. The document also reviews other disposal methods like incineration and concludes that bioremediation research aims to make the process cleaner and more effective at degrading hazardous constituents.
Waste water treatment process and plant performance at 20MLD STP
it is about sewage plant at balkapur nala one of the opening to hussain sagar and history behind construction of hussain sagar
Oil Refinery Waste water treatment Plant
Oil Refinery Effluent Water Treatment
Removal of COD impurities
Removal of BOD impurities
Activated Sludge
Aerobic Oxidation
Flotation
WASTE WATER TREATMENT REFINERIES
With rising crude prices and depleting quality of crude, however, the level of wastewater pollutants in petroleum wastewater is at new high. Such conditions are forcing refineries to use a more advanced water treatment, water recovery methods, and robust processes that work well under a variety of conditions and can handle the changing refinery effluent flow rates. Finally a process that is economical in overall life time cost is needed to make all of this feasible. Aquatech has experience working with these refinery effluent pollutants in the refinery market and offers the advanced petroleum wastewater treatment and recovery technology necessary for the refinery’s needs.
Dissolve air flotation technology to treat highly polluted wastewater
Air flotation technology has proved to be an efficient method to treat heavily polluted wastewater from tanneries, slaughterhouses and chemical industries
Industrial wastewater reuse_Anil Sharma_2013
This document discusses industrial wastewater reuse and membrane bioreactor (MBR) technology for treatment. It provides examples of MBR systems treating wastewater from automotive, refinery/petrochemical, and food & beverage facilities for reuse in industrial processes. GE's ZeeWeed MBR technology using immersed hollow fiber membranes is shown to reliably produce high quality effluent meeting reuse standards. The presentation concludes that MBR fits the need to treat difficult industrial wastewater to levels required for reuse applications.
Zero Liquid Discharge For Pulp and paper industries
This Presentation contains Importance of ZLD, What is ZLD, Challenges in ZLD and a case study of a pulp and paper Industry named "Tamil Nadu Newsprint and Papers Limited, Karur Tamil Nadu"
Treatment of Industrial Oily Waste Water
The document summarizes a study on treating oily wastewater from a metal industry's cutting fluid in Indore City, India. The study tested various coagulants for removing total suspended solids (TSS), total dissolved solids (TDS), and oil and grease. Poly aluminum chloride was found to be the most effective coagulant, removing up to 89.6% of TSS, 42.2% of TDS, and 88.8% of oil and grease. Acidification of the wastewater to pH 4 prior to coagulation treatment was found to maximize oil removal. The study concludes that chemical treatment using coagulation after acidification is an effective way to remove contaminants from o
STP Operation Presentation
This document provides an overview of water issues and sewage treatment processes. It discusses the global water crisis, reasons for water scarcity in India like increasing demand and decreasing supply. It then describes the various unit processes involved in sewage treatment like bar screens, neutralization, activated sludge process using aeration tanks and secondary clarifiers, and tertiary treatment using processes like filtration and UV disinfection. The importance of proper operation and maintenance of sewage treatment plants is also emphasized.
Zero Liquid Discharge
Zero Liquid Discharge (ZLD) is a process that treats wastewater to allow for reuse and recycling of water with no discharge. ZLD systems employ advanced treatment like evaporation and crystallization to purify wastewater. In India, certain industries are now required to implement ZLD to reduce water pollution. The textile industry in particular has experience with ZLD since 2008 when Tamil Nadu mandated it for dyeing plants. ZLD increases textile production costs by 6-10% due to high capital and operating expenses of the treatment systems.
Aerobic attached growth systems
This document provides information on aerobic attached growth systems, specifically trickling filters. Key points include:
- Trickling filters are fixed film bioreactors that use media like rock or plastic to develop biofilms, treating wastewater as it trickles through the media.
- Wastewater flows over the biofilms, exposing them alternately to wastewater and air to facilitate treatment.
- Design considerations include media type, wastewater distribution, ventilation, and secondary clarification after treatment.
- Empirical equations are provided to help design trickling filters based on parameters like organic loading, temperature, media characteristics, and wastewater flow.
Water treatment by demineralisation
Reverse osmosis uses semi-permeable membranes to purify water by separating dissolved solids. It has various applications in water treatment and is used along with demineralization plants. A reverse osmosis system consists of pre-treatment, high-pressure pumps, membrane systems, and post-treatment. It produces permeate water while concentrating impurities in reject water. Demineralization uses ion exchange resins to remove mineral ions, producing very high purity water. Together, reverse osmosis and demineralization can purify water for various industrial and medical uses.
An introduction to electrocoagulation
This document provides an overview of electrocoagulation (EC) as a wastewater treatment process. It describes the basic EC process, which uses sacrificial anode dissolution to introduce metal ions into water that destabilize pollutants. Key factors that affect EC efficiency are discussed, including electrode arrangement, current density, pH, and electrode material. The document also outlines several applications of EC for treating various types of industrial wastewaters and waters containing pollutants like heavy metals, dyes, and organic matter. EC is presented as an effective wastewater treatment alternative that is simple to operate and can remove a wide range of pollutants.
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This shopping list contains ingredients like Fels Naptha bar, washing soda, and borax for making homemade laundry products, which can be found at big box retailers and saved money through local paper ads. Instructions explain to prep the Fels Naptha bar by breaking it up and blending all ingredients together in an airtight container before packaging the homemade mixture. An additional fact is shared that vinegar can be used as a fabric softener.
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二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：6496090】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
学历顾问：微信：6496090
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Overview of the Global Peatlands Assessment
Presented by Patrick Scheel at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Peatlands of Latin America and the Caribbean
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Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
How about Huawei mobile phone-www.cfye-commerce.shop
How about Huawei mobile phone-www.cfye-commerce.shop
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How about Huawei mobile phone-www.cfye-commerce.shop
How about Huawei mobile phone-www.cfye-commerce.shop
Zero Liquid Discharge System
- 1. Prepared By Sameer Dohare Founder & Director EnviroChem Services (OPC) Pvt. Ltd.
- 2. What is ZLD System?? Zero Liquid Discharge (ZLD) System can be defined as a Water Management System which Treat and Recycle nearly all Generated Wastewater.
- 3. Why ZLD System?? Helps YOU to meet Legislative Norms prescribed by State Pollution Control Board (SPCB). Enhances YOUR “Corporate Image” as well as “Business” by providing Better Water Management System.
- 4. Where?? Textile Industries Pharmaceutical Industries Dye & Intermediate Industries Pigment Industries Food Industries Chemical Industries Engineering Industries Commercial & Residential Buildings Hotels & Resorts
- 5. Available Technologies : Membrane Filtration Concentrators Reverse Osmosis (RO) Resin Based Concentrators De-Mineralization (DM) Concentrators Evaporators Multiple Effect Evaporator (MEE) Mechanical Vapor recompression (MVR) Multiple Effect Distillation (MED) Crystallizers
- 6. Problem with ZLD!! It is Zero “Liquid” Discharge. It only changes the PHASE of Pollutants. ZLD simply converts Water Pollution into Land Pollution and / or Air Pollution.
- 7. What We Do!! Image courtesy NASA
- 8. Contact Us!! EnviroChem Services (OPC) Pvt. Ltd.