Eliminating system and method for wastewater biological toxicity in industrial park

Abstract

The invention relates to an eliminating system and method for wastewater biological toxicity in an industrial park. The system comprises an adjusting tank, a micro-aerobic denitrification decarburization tank, a precipitation tank, a primary coagulative precipitation tank, a primary sand filter, a catalytic ozonation system, a suspension attachment anaerobic hydrolysis acidification tank, a biological aerated filter, a secondary coagulative precipitation tank, a secondary sand filter and an ultraviolet disinfection trench. The eliminating method comprises the steps of adjusting treatment, micro-aerobic denitrification decarburization treatment, primary coagulation precipitation, primary filtering, catalytic ozonation, anaerobic hydrolysis acidification treatment, decarburization and detoxification treatment, secondary coagulation precipitation, secondary filtering and backflow and ultraviolet disinfection treatment. The eliminating method can effectively degrade biological toxicity of wastewater in the industrial park, ensure conventional water quality detection indexes of outflow water and long-term stable standards of comprehensive biological toxicity and reduce secondary pollution of wastewater to the environment.

Description

technical field [0001] The invention belongs to the field of industrial park wastewater treatment, and in particular relates to a system and method for eliminating biological toxicity of industrial park wastewater. Background technique [0002] Industrial wastewater, especially wastewater from industrial parks, contains a variety of toxic and harmful pollutants to the ecological environment, such as heavy metals, chloroanilines, chloronitrobenzenes, cyanides, and other toxic and harmful pollutants that threaten human health and ecological safety. substance. only by COD cr 、BOD 5 Conventional water quality indicators such as ammonia nitrogen and ammonia nitrogen cannot objectively and accurately evaluate the water quality safety performance of wastewater. Because of this, an industrial wastewater quality evaluation index system consisting of routine water quality monitoring indicators, characteristic water quality indicators and comprehensive biological toxicity indicators...

AI Technical Summary

Problems solved by technology

At this stage, there are relatively many developments and researches on the detection methods of wastewater biotoxicity, but there are relatively few studies on how to eliminate the biotoxicity of wastewater, especially industrial park wastewater, through reasonable treatment processes.

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