Transcription of SEWAGE TREATMENT – TECHNOLOGIES
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SEWAGE TREATMENT – TECHNOLOGIES
SEWAGE TREATMENT TECHNOLOGIESTECHNOLOGIEST ypes of contaminants in SewageTypes of contaminants in SewageORGANICINORGANIC Sugar MilkSuspendedDissolvedSuspendedDissolved Vegetable matter Food residue Plastic bags Cans Fiber clothes SaltBiological treatmentPrimary treatmentSl. NoContaminantSourceEnvironmental significance1 Suspended solidsDomestic use, industrial wastesCause sludge deposits and anaerobic condition in aquatic environmentImportant Waste Water Contaminantsin aquatic environment2 Biodegradable organicDomestic use , industrial wastesCause biological degradation3 PathogensDomestic waterTransmit communicable disease4nutrientsDomestic and industrial wasteCause eutrophication5 Refractory organicsIndustrial wasteCause taste and odour problemsPollutants in SEWAGE BOD(Bio Chemical Oxygen demand) COD(Chemical Oxygen demand) COD(Chemical Oxygen demand) TSS(Total Suspended Solids) PHBOD(Biochemical Oxygen demand)The BOD is an important measure of water quality.
• for main pumping station (mps) i:s. 5600-2005 number of pumps required (including stanby) 2 no. of ½ dwf 2 no. of 1 dwf 1 no. of 3 dwf • for intermediate pumping station (ips) number of pumps required (including stanby) for capacity of pumping station upto 3 mld 1 no. of 1 dwf 1 no. of 2 dwf 1 no. of 3 dwf
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