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Best Practice Guide on the Control of Arsenic in Drinking Water
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This Best Practice Guide on the Control of Arsenic in Drinking Water arises from the knowledge collected by the European Research Network COST Action 637 involving 27 European countries and the USA. Besides the large number of important papers, reports and reviews already available on various aspects of arsenic occurrence in environment, water and food and related human exposure, this book fills a gap in the field concerning assessment of risks, implications, challenges, and actions required by public health managers. It focuses only on the key aspects of risk assessment, management and communication relevant to higher levels of arsenic in drinking water, which are geological factors, the extent of arsenic occurrence, total exposure of arsenic and the role of drinking water, including regulatory aspects as well as technical (treatment) issues. The Best Practice Guide on the Control of Arsenic in Drinking Water tries to raise public awareness on this subject, which seems to be low and risks are being underestimated in a number of regions. This is especially valid for Europe although less for other regions which are typically more contaminated with arsenic. The referred practices conform to the recommendations of the World Health Organisation (WHO), the European Food Safety Authority (EFSA) and the U.S. Environmental Protection Agency (EPA). It is a useful guide for drinking water suppliers, experts of municipalities, public health authorities, drinking water regulators and non-governmental organisations.
It focuses only on the key aspects of risk assessment, management and communication relevant to higher levels of arsenic in drinking water, which are geological factors, the extent of arsenic occurrence, total exposure of arsenic and the role of drinking water, including regulatory aspects as well as technical (treatment) issues.
The Best Practice Guide on the Control of Arsenic in Drinking Water tries to raise public awareness on this subject, which seems to be low and risks are being underestimated in a number of regions. This is especially valid for Europe although less for other regions which are typically more contaminated with arsenic.
The referred practices conform to the recommendations of the World Health Organisation (WHO), the European Food Safety Authority (EFSA) and the U.S. Environmental Protection Agency (EPA). It is a useful guide for drinking water suppliers, experts of municipalities, public health authorities, drinking water regulators and non-governmental organisations.
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- Price:
- Price: £ 60.00 / US$ 108.00 / € 81.00
IWA members price: £ 45.00 / US$ 81.00 / € 60.75
Student price: £ 37.50 / US$ 67.50 / € 50.63 - Print ISBN:
- 9781843393856
- Format:
- Pages: 120 Paperback
- Publication Date:
- Dec. 2015
- Format Type:
- Book
The effluent generated from different sections of a textile industry must be treated before they are discharged to the environment. Various chemicals and physical means are introduced for this purpose. Some chemicals are used to treatment those wastage polluted water. Here chemicals name are given which are used in effluent treatment plant. Required Chemicals and Their Functions in Biological ETP: H2SO4: Function: Neutralize the waste water controlling the PH. It is auto dispensed in the neutralization tank. Polyelectrolyte: Function: Used for sedimentation / sludge coagulation and also killing bacteria. Antifoaming Agent: Function: Used for reduction / controlling foam. It is used auto / manually in the distribution tank. De-colorant: Function: Used for removing color. It is used auto / manually in the sedimentation feeding tank. Sodium Hypochlorite: Function: It is used to kill the harmful bacteria. It is used in the biological oxidation tank. Product Quality Checked: 1. Biological Oxygen Demand (BOD) 2. Chemical Oxygen Demand (COD) 3. Total suspended solids 4. Total dissolved solids 5. Color 6. PH etc. Waste Water Treatment Plant Standard: No Parameter Unit Concentration Present Department of environment Government of Bangladesh Inlet Outlet 1 BOD PPM 281 23 50 2 COD PPM 730 56 200 3 TDS PPM 3220 1580 2100 4 TSS PPM 204 36 150 5 EC µδ/cm 6430 3160 1200 6 DO PPM 0.1 4.6 4.5-8 7 Chloride PPM - >200 600 8 Phosphate PPM 2.6 2.2 8 9 Nitrate PPM 0.9 0.06 10 10 Ammonium PPM 0.09 0.07 5 11 Sulphate PPM - 27 - 12 Arsenic PPM - - 0.2 13 Cyanide PPM - - - 14 Nitrate PPM 0.08 0.05 50 15 Cobalt PPM - - - 16 PH - 10.3 8.1 6-9 17 Temperature ºC 40 38 40 Summer or 45 Winter 18 Cadmium PPM - - 0.05 19 Chromium PPM - - 0.05 Read more: http://textilelearner.blogspot.com/2015/03/required-chemicals-and-their-functions.html#ixzz3q8fgP5MX
The effluent generated from different sections of a textile industry must be treated before they are discharged to the environment. Various chemicals and physical means are introduced for this purpose. Some chemicals are used to treatment those wastage polluted water. Here chemicals name are given which are used in effluent treatment plant. Required Chemicals and Their Functions in Biological ETP: H2SO4: Function: Neutralize the waste water controlling the PH. It is auto dispensed in the neutralization tank. Polyelectrolyte: Function: Used for sedimentation / sludge coagulation and also killing bacteria. Antifoaming Agent: Function: Used for reduction / controlling foam. It is used auto / manually in the distribution tank. De-colorant: Function: Used for removing color. It is used auto / manually in the sedimentation feeding tank. Sodium Hypochlorite: Function: It is used to kill the harmful bacteria. It is used in the biological oxidation tank. Product Quality Checked: 1. Biological Oxygen Demand (BOD) 2. Chemical Oxygen Demand (COD) 3. Total suspended solids 4. Total dissolved solids 5. Color 6. PH etc. Waste Water Treatment Plant Standard: No Parameter Unit Concentration Present Department of environment Government of Bangladesh Inlet Outlet 1 BOD PPM 281 23 50 2 COD PPM 730 56 200 3 TDS PPM 3220 1580 2100 4 TSS PPM 204 36 150 5 EC µδ/cm 6430 3160 1200 6 DO PPM 0.1 4.6 4.5-8 7 Chloride PPM - >200 600 8 Phosphate PPM 2.6 2.2 8 9 Nitrate PPM 0.9 0.06 10 10 Ammonium PPM 0.09 0.07 5 11 Sulphate PPM - 27 - 12 Arsenic PPM - - 0.2 13 Cyanide PPM - - - 14 Nitrate PPM 0.08 0.05 50 15 Cobalt PPM - - - 16 PH - 10.3 8.1 6-9 17 Temperature ºC 40 38 40 Summer or 45 Winter 18 Cadmium PPM - - 0.05 19 Chromium PPM - - 0.05 Read more: http://textilelearner.blogspot.com/2015/03/required-chemicals-and-their-functions.html#ixzz3q8fgP5MX