Sewage treatment apparatus for chemical industry parks

Abstract

The present invention discloses a sewage treatment apparatus for chemical industry parks. The sewage treatment apparatus comprises a catalytic oxidation pool, an oxidation stabilization pool, a post-biochemistry BAF pool, a clear water pool, a water collection pool and a filter, wherein the catalytic oxidation pool, the oxidation stabilization pool, the post-biochemistry BAF pool and the clear water pool are sequentially connected through a transmission pipeline, the filter is connected to the interior of the catalytic oxidation pool through a water inlet pipeline, an ozone generator is connected to the interior of the catalytic oxidation pool through a gas pipeline, the clear water pool is provided with a water inlet hole, a water outlet hole and a reflux hole, the water inlet hole of theclear water pool is connected to the post-biochemistry BAF pool through the transmission pipeline, the water outlet hole of the clear water pool is connected to one end of a backwash pump, the otherend of the backwash pump is connected to the interiors of the catalytic oxidation pool and the post-biochemistry BAF pool through reflux pipelines, the catalytic oxidation pool is filled with ozone catalysis particles in a fixed bed form, and the water collection pool is positioned at one catalytic oxidation pool side opposite to the oxidation stabilization pool. According to the present invention, with the sewage treatment apparatus, the ammonia nitrogen removal rate exceeds more than 92%, and the COD removal rate exceeds more than 78%, such that the wastewater treatment under the low concentration condition can be well achieved.

Description

technical field [0001] The invention relates to a sewage treatment device used in chemical industrial parks, belonging to the technical field of chemical sewage. Background technique [0002] At present, the advanced treatment processes for chemical high-salt sewage mainly include biological oxidation and physical-chemical advanced oxidation. The biological oxidation is represented by the MBR process. Poor (BOD<10), the effect of the biochemical process is limited, and it cannot meet the requirements of the first-class standard for sewage discharge; the advanced oxidation process includes direct contact oxidation with ozone, Fenton reagent, etc., and its disadvantages are unstable treatment effect, high operating cost, produce secondary pollution, etc. Contents of the invention [0003] The object of the present invention is to provide a kind of sewage treatment device used in chemical industry park, the reaction rate of this sewage treatment device used in chemical in...

AI Technical Summary

Problems solved by technology

[0002] At present, the advanced treatment processes for high-salt sewage in the chemical industry mainly include biological oxidation and physical-chemical advanced oxidation. The biological oxidation is represented by the MBR process. Poor (BOD<10), the effect of the biochemical process is limited, and it cannot meet the requirements of the first-class standard for sewage discharge; the advanced oxidation process includes direct contact oxidation with ozone, Fenton reagent, etc., and its disadvantages are unstable treatment effect, high operating cost, secondary pollution, etc.

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