An advanced treatment device for printing and dyeing wastewater

Abstract

The invention discloses an advanced treatment device for printing and dyeing wastewater. The advanced treatment device comprises a fiber turntable filter tank, an ozone contact tank, a filter tank, a reaction tank, a sedimentation tank and a waterstorage tank which are connected in sequence, wherein the ozone contact tank is connected with an ozone preparation device; the ozone preparation device is connected with an oxygen preparation device; tail gas breaking devices are arranged on both of the ozone contact tank and the filter tank; 3 extension boards are distributed at intervals in the ozone contact tank; the lower ends of the extension boards are fixedly connected with the lower wall of the ozone contact tank, so as to divide the ozone contact tank into a first tank body, a second tank body and a third tank body; an aeration device is arranged at the bottom of each of the first tank body, the second tank body and the third tank body; the aeration devices are connected with theozone preparation device. The advanced treatment device effectively improves the outlet water quality through the synergistic effect of powdered activated carbon and a flocculant, ensures that wastewater can meet the requirement of primary B drainage after being treated, andis good in water treatment effect, simple in technical operation and low in operation cost.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing wastewater treatment, in particular to an advanced treatment device for printing and dyeing wastewater. Background technique [0002] The wastewater discharged by printing and dyeing enterprises has the characteristics of large water volume, high content of organic pollutants, refractory degradation, deep color, high alkalinity, and diversified water quality changes, so it is a difficult industrial wastewater to treat. At present, the printing and dyeing wastewater treatment processes commonly used in the printing and dyeing industry are mainly divided into two categories, physical and chemical methods and biochemical methods. With the continuous improvement of the country's requirements on the quality of discharged water, seeking more efficient, economical and stable advanced treatment processes has gradually become a topic of concern to the current environmental protection industry. ...

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Problems solved by technology

However, in actual operation and production, there are often problems such as poor process stability, high operating costs, and secondary pollutants that increase the difficulty of post-processing.

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