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Reconstruction of Printing and Dyeing Wastewater Treatment Project

Zhihui Liu

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Abstract

The processes of hydrolysis acidification/jet aeration/coagulation flotation were used to reconstruct a printing and dyeing wastewater treatment project with a capacity of 3 500 m3/d.After the reconstruction,the chemicals expense is saved,and the effluent COD,color and pH are 70.7 mg/L,28 times and 8.28.The effluent quality can meet the first grade criteria specified in the Discharge Standard of Water Pollutants for Dyeing and Finishing of Textile Industry(GB 4287-92).

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What this paper is about

The processes of hydrolysis acidification/jet aeration/coagulation flotation were used to reconstruct a printing and dyeing wastewater treatment project with a capacity of 3 500 m3/d.After the reconstruction,the chemicals expense is saved,and the effluent COD,color and pH are 70.7 mg/L,28 times and 8.28.The effluent quality can meet the first grade criteria specified in the Discharge Standard of Water Pollutants for Dyeing and Finishing of Textile Industry(GB 4287-92).

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Available abstract

The processes of hydrolysis acidification/jet aeration/coagulation flotation were used to reconstruct a printing and dyeing wastewater treatment project with a capacity of 3 500 m3/d.After the reconstruction,the chemicals expense is saved,and the effluent COD,color and pH are 70.7 mg/L,28 times and 8.28.The effluent quality can meet the first grade criteria specified in the Discharge Standard of Water Pollutants for Dyeing and Finishing of Textile Industry(GB 4287-92).

Key concepts: Dyeing, Effluent, Water pollutants, Aeration, Wastewater, Textile industry, Environmental science, Waste management

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