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Dyeing and Finishing Wastewater Treatment Using Hydrolysis-acidification/Aerobic Bio-oxidation/Coagulation/Air Flotation Process

LV Xi-wu

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Abstract

In order to enlarge production capacity and improve effluent quality,the original treatment process for dyeing and finishing wastewater from a textile factory in Jiangsu Province was modified to a combined hydrolysis-acidification/aerobic bio-oxidation/coagulation/air flotation. The practical results indicate that the removal efficiencies of SS,BOD_5,COD and color are 63.6%,93.4%,92.3% and 92.9 %,respectively. The effluent quality satisfies the class I criteria of the Discharge Standard of Water Pollutant for Dyeing and Finishing of Textile Industry(GB 4287-92).

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What this paper is about

In order to enlarge production capacity and improve effluent quality,the original treatment process for dyeing and finishing wastewater from a textile factory in Jiangsu Province was modified to a combined hydrolysis-acidification/aerobic bio-oxidation/coagulation/air flotation. The practical results indicate that the removal efficiencies of SS,BOD_5,COD and color are 63.6%,93.4%,92.3% and 92.9 %,respectively. The effluent quality satisfies the class I criteria of the Discharge Standard of Water Pollutant for Dyeing and Finishing of Textile Industry(GB 4287-92).

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Available abstract

In order to enlarge production capacity and improve effluent quality,the original treatment process for dyeing and finishing wastewater from a textile factory in Jiangsu Province was modified to a combined hydrolysis-acidification/aerobic bio-oxidation/coagulation/air flotation. The practical results indicate that the removal efficiencies of SS,BOD_5,COD and color are 63.6%,93.4%,92.3% and 92.9 %,respectively. The effluent quality satisfies the class I criteria of the Discharge Standard of Water Pollutant for Dyeing and Finishing of Textile Industry(GB 4287-92).

Key concepts: Effluent, Dyeing, Wastewater, Pulp and paper industry, Coagulation, Pollutant, Oxidation process, Water pollutants

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