METHOD FOR REMOVING TOTAL NITROGEN DURING TREATMENT OF COKING WASTEWATER BY USING MICROORGANISMS

摘要

A method for removing total nitrogen during treatment of coking wastewater by using microorganisms. Wastewater (A) enters a regulation pool, a hydrolysis acidification pool, a first aerobic pool, a preliminary sedimentation pool, a facultative pool, a second aerobic pool and a secondary sedimentation pool, and is finally discharged after meeting standard requirements. The hydrolysis acidification pool, the first aerobic pool and the preliminary sedimentation pool form a first-stage A/O system. The facultative pool, the second aerobic pool and the secondary sedimentation pool form a second-stage A/O system. The first-stage and second-stage A/O systems form two independent sludge systems. In addition, the hydrolysis acidification pool, the first aerobic pool, the facultative pool and the second aerobic pool are respectively added with 1.0% to 2.5% of microbial carriers and 1.5% to 4.0% of environmental microorganism preparations based on their respective volumes.