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Table – 2 Important Sources of Odour Pollution and Odorous Compounds Emitted Sources Sections Odorous Compounds Pulp & Paper Digester Black Liquor Storage Tank Evaporator Recovery Boiler Smelt Dissolving Tank Lime kiln Nitrogenous Phosphatic CH3 SH CH3SH, CH3’2S H2S, CH3’2S2, CH3’2S CH3SH, CH3’2S H2S, CH3SH CH3SH, SO2 NH3, SO2, F2 Fertilizers CH3CHO, NH3, H2S Pesticides Tanneries Sugar & Distillery Chemical Raw hides and skins storage / waste fleshing Beam house operation Finishing operation ETP: Collection Tanks ETP: Primary Treatment Units ETP: Sludge Dewatering System ETP: Anaerobic Lagoons Bio-methanation Aeration Tank – Putrification of Hides & Skins NH3, H2S Volatile organic compounds H2S H2S H2S H2S, CH4 H2S NH3 NH3 H2S, Cl2, Mercaptans & Phenols NH3, H2S, SO2, Mercaptans, Dye & Dye Intermediates Bulk Drugs & Pharmaceuticals Biological extracts and wastes spent termination liquors H2S, SO2, Mercaptans, Waste Water Treatment Plant Anaerobic decomposit
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