Shanghai Environmental & Sanitary Engineering Design Institute Co., Ltd.

Ruoshui (Shanghai) Environmental Technology Co., Ltd.

Jun Tai

Li Wang

Shengdong Wang

Wentao Luo

Qiujun Yao

Zhenwei Xu

A method for deep treatment of household waste leachate by a biochemical process is provided, including: arranging one anoxic tank and two aerobic tanks in series; introducing the household waste leachate into the primary anoxic reactor, and diluting the household waste leachate to an concentration acceptable to microorganisms; introducing the diluted household waste leachate into the primary aerobic reactor, and subjecting the diluted household waste leachate to an pre-nitrification reaction to obtain a reactant; introducing the reactant into the secondary aerobic reactor, and subjecting the reactant to a main nitrification reaction to convert ammonia nitrogen into nitrate nitrogen and nitrite nitrogen by nitrification of nitrobacteria; refluxing the nitrification liquid to the primary anoxic reactor, converting the nitrate nitrogen and nitrite nitrogen into nitrogen gas by denitrobacteria in the primary anoxic reactor, and discharging the nitrogen gas into atmosphere, thereby finishing an denitrification process.

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Shanghai, China

Jun Tai