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Optimization of cotton dyeing effluents treatment process

Hao Xu

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Abstract

Cotton dyeing effluents are treated with biological contact oxidation process(O), hydrolysis acidification-biologica contact oxidation process ( A/O ) and double hydrolysis acidification-biological contact oxidation process respectively. The results show that the A/O process features higher removal of COD and chroma than those of O process,Adding another A/O segment in A/O process cannot improve the quality of outlet effluents. The quality of outlet effluents can be improved with A/O process combined with biological technology, coagulation sedimentation and ozone oxidation.

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What this paper is about

Cotton dyeing effluents are treated with biological contact oxidation process(O), hydrolysis acidification-biologica contact oxidation process ( A/O ) and double hydrolysis acidification-biological contact oxidation process respectively. The results show that the A/O process features higher removal of COD and chroma than those of O process,Adding another A/O segment in A/O process cannot improve the quality of outlet effluents. The quality of outlet effluents can be improved with A/O process combined with biological technology, coagulation sedimentation and ozone oxidation.

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Available abstract

Cotton dyeing effluents are treated with biological contact oxidation process(O), hydrolysis acidification-biologica contact oxidation process ( A/O ) and double hydrolysis acidification-biological contact oxidation process respectively. The results show that the A/O process features higher removal of COD and chroma than those of O process,Adding another A/O segment in A/O process cannot improve the quality of outlet effluents. The quality of outlet effluents can be improved with A/O process combined with biological technology, coagulation sedimentation and ozone oxidation.

Key concepts: Effluent, Dyeing, Oxidation process, Process (computing), Hydrolysis, Pulp and paper industry, Chemistry, Coagulation

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