Printing and dyeing wastewater treatment system

Abstract

The invention relates to a printing and dyeing wastewater treatment system, and belongs to the technical field of printing and dyeing wastewater treatment. The system consists of nine parts, namely an adjusting tank 1, a lift pump 2, a coagulating system 3, a primary sedimentation tank 4, a contact oxidation sediment system 5, a sand filtering tank 6, an active carbon adsorbing tank 7, a sludge pump 8 and a sludge concentrating tank 9. The printing and dyeing wastewater treatment system adopts the combined process of coagulation, contact oxidation, sand filtration and active carbon adsorption, and adds the deep treatment processes of the sand filtration and the active carbon adsorption after the physical-chemical treatment coagulation process and the biochemical treatment contact oxidation process. The printing and dyeing wastewater treatment system can be designed and manufactured respectively according to the wastewater quantities of printing and dyeing enterprises, and has the advantages of good treatment effect of printing and dyeing wastewater, stable operation, high degree of automation, simple operation, convenient maintenance, good and stable outlet water quality, superior level to the national emission primary standard and the like. The system particularly has good treatment effect of the printing and dyeing wastewater with high density and high chromaticity.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing wastewater treatment. Specifically, it relates to an integrated treatment system for printing and dyeing wastewater, which uses pretreatment-physicochemical treatment-biochemical treatment-advanced treatment to treat wastewater, through coagulation, contact oxidation, sand filtration and The combined process of activated carbon adsorption technology can effectively treat printing and dyeing wastewater. Background technique [0002] According to statistics, my country's annual discharge of printing and dyeing wastewater accounts for 35% of the total industrial wastewater discharge. Printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, high content of suspended solids, deep color, high alkalinity, and large changes in water quality. With the rapid development of the dye industry, the variety and quantity of dyes are increasing ...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to realize through the following technical scheme: printing and dyeing wastewater treatment system of the present invention has adopted coagulation, contact oxidation, sand filter and activated carbon adsorption combined process, has added sand after physical and chemical treatment coagulation process and biochemical treatment contact oxidation process Filtration and activated carbon adsorption advanced treatment technology, effectively overcome the shortcomings of simple use of physicochemical-biochemical treatment, etc., to ensure better effluent water quality

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