Treatment technology for printing and dyeing wastewater

Abstract

The invention provides a treatment technology for printing and dyeing wastewater. A device body, an air floating cavity which is located in the device body and provided with an upward opening and a stirring cavity located at the left side of the air floating cavity are involved, an aeration cavity communicated with the air floating cavity is fixedly formed in the bottom wall of the air floating cavity, an aeration device is arranged in the aeration cavity, and a first sliding cavity with a rightward opening is formed in the end wall of the left side of the air floating cavity. According to thetreatment technology, a wastewater treatment device is more reasonable and ingenious in overall structure and convenient to use, the wastewater and a coagulant thereof can be stirred and mixed and the wastewater can be fed at the same time, the operation is conveniently conducted, and the device is stable; automatic operation is achieved, the efficiency is higher, the effect is better, a filtering plate is adopted for the device and inclines so as to more cleanly and completely dump floating residues, the wastewater is subjected to secondary treatment, the treatment effect is better, and thetreatment technology has high application and popularization value.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a printing and dyeing wastewater treatment process. Background technique [0002] The dyeing industry is a typical water-intensive industry that consumes nearly 100 million tons of process demineralized water 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 protection. [0003] Now there are already some printing and dy...

AI Technical Summary

Problems solved by technology

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 increasingly difficult to meet the requirements of production and environmental protection

[0003] Now there are already some printing and dyeing wastewater treatment equipment, these equipment often have poor treatment effect, the pollutant content in the treated water is still exceeding the standard, some of them use air flotation method to treat wastewater equipment, but these equipment use scraper to scrape out the floating powder efficiency is not high , and not clean enough

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