Dyeing wastewater treatment and recycling technical system

Abstract

The invention discloses a dyeing wastewater treatment and recycling technical system which comprises a pretreatment system, an oxidation ditch and an advanced treatment system, wherein the pretreatment system comprises a water collecting well, a preliminary sedimentation tank and a regulating tank; the water collecting well communicates with the preliminary sedimentation tank; the preliminary sedimentation tank communicates with the regulating tank; the regulating tank communicates with the oxidation ditch; the oxidation ditch communicates with a secondary sedimentation tank; the secondary sedimentation tank respectively communicates with the preliminary sedimentation tank and a coagulative reaction sedimentation tank; the coagulative reaction sedimentation tank communicates with a sludge concentration tank; and the advanced treatment system communicates with the coagulative reaction sedimentation tank, and comprises an aeration biological filter tank, an ozone contact tank and a filter tank. The dyeing wastewater treatment and recycling technical system has the advantages of thorough wastewater treatment, high economic feasibility, stable operation, lower energy consumption and the like, and is simple to operate. Various treatment units are integrated to display the respective treatment advantages and functions, thereby providing a reliable and economical solution for dyeing wastewater treatment and recycling.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a technical system for the treatment and reuse of printing and dyeing wastewater. Background technique [0002] The printing and dyeing industry is a typical water-intensive industry, which consumes nearly 100 million tons of demineralized water for process every year. The sources of printing and dyeing wastewater and the composition of pollutants are very complex, with the characteristics of large changes in water quality, high organic content, high chroma (mainly colored dyes), etc. Direct discharge will bring great harm to human health and living environment, and cause water resources. waste. As the country and society pay more and more attention to environmental protection requirements and the requirements for sustainable development, traditional processing methods have become more and more difficult to meet the requirements of production and environmental p...

AI Technical Summary

Problems solved by technology

The sources of printing and dyeing wastewater and the components of pollutants are very complex, with the characteristics of large changes in water quality, high organic content, high chroma (mainly colored dyes), etc. Direct discharge will bring great harm to human health and the living environment, and cause water resources. waste

As the country and society pay more and more attention to environmental protection requirements and the requirements for sustainable development, traditional processing methods have become increasingly difficult to meet the requirements of production and environmental protection

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