Study on key technology and process for deep reduction of endocrine disrupting toxicity

Abstract

At present, there are few deep reduction technologies for endocrine disrupting toxicity(EDCs) in biochemical tailwater treatment, and conventional chlorine disinfection will cause increased biological toxicity, high operating cost and complex operation. In this paper, combining biochemical treatment with catalytic ozone oxidation treatment technology, a method for deep reduction and safe reuse of biochemical tail water endocrine disruption toxicity was proposed. Combined with pilot test results and demonstration projects, a process of “functional bacteria enhanced MBR+ozone catalytic oxidation” was constructed for deep reduction of endocrine disruption toxicity of biochemical tail water. The experimental results showed that the reduction rate of endocrine disruption toxicity in effluent water was 84.51%, and the average concentration was 0.8 ng/L, and the effluent met the requirements of the safety threshold of endocrine disruption toxicity and the safe discharge and reuse of biochemical tail water, it provides reference for the safe discharge and reuse of municipal sewage in the future.

Keywords

• endocrine disrupting toxicity
• mbr enhanced by functional bacteria
• electrolytic coupling biofilter
• catalytic ozonation
• safe reuse