Printing and dyeing tail water deep treatment and reuse process

Abstract

The invention provides a printing and dyeing tail water deep treatment and reuse process, which is characterized by comprising the following steps of: a) collecting printing and dyeing tail water; b) carrying out preliminary decolorizing in a decolorizing reaction pond; c) guiding outlet water processed by the step b into a coagulating basin, and adding coagulant and coagulant aids into the coagulating basin so as to promote particles in water to be coagulated; d) feeding water processed by the step c into a settling pond, carrying out solid-liquid separation, and flowing sediments in the settling pond into a sludge treatment system after processing in the settling pond; e) guiding outlet water processed by the step d into a filtering basin to be filtered and disinfected; f) carrying out high pressure CO2 disinfection process; and g) settling for 1 hour after the step f, filtering, removing remained impurities in water, obtaining processed recycled water, and guiding into a reuse water pipe net.

Description

technical field [0001] The invention relates to a printing and dyeing tail water treatment technology, in particular to a printing and dyeing tail water advanced treatment and reuse process. Background technique [0002] With the continuous increase of my country's population, sustained economic development and accelerated urbanization, the contradiction between supply and demand of water resources has become increasingly prominent, and water shortage and water pollution have become important factors restricting the sustainable development of society and economy. Industry is a major consumer of water resources, and at the same time, the industrial sector is also a major pollutant discharger. The 2011 "Government Work Report" clearly pointed out that solidly promote energy conservation and emission reduction, strengthen the treatment of industrial "three wastes", and the printing and dyeing industry will implement stricter water consumption quotas and wastewater discharge con...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of low mass transfer efficiency in traditional printing and dyeing tail water treatment for printing and dyeing wastewater tail water with complex components, low bioavailability, and chemical refractory degradation, and to provide a printing and dyeing tail water advanced treatment and reuse process , to achieve efficient recycling and resource reuse of dye wastewater

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