The combined biological processes of branched water-adjustment， chemical precipitation， hydrolysis acidification， secondary sedimentation， Anoxic/Oxic and activated carbon treatment were used for chemical industrial wastewater treatment in the Taihu Lake Basin. Full-scale treatment resulted in effluent chemical oxygen demand， total nitrogen， NH-N and total phosphorus of 35.1， 5.20， 3.10 and 0.15 mg/L， respectively， with a total removal efficiency of 91.1%， 67.1%， 70.5% and 89.3%， respectively. In this process， short-circuited organic carbon from brewery wastewater was beneficial for denitrification and second-sulfate reduction. The concentration of effluent fluoride was 6.22 mg/L... More
The combined biological processes of branched water-adjustment， chemical precipitation， hydrolysis acidification， secondary sedimentation， Anoxic/Oxic and activated carbon treatment were used for chemical industrial wastewater treatment in the Taihu Lake Basin. Full-scale treatment resulted in effluent chemical oxygen demand， total nitrogen， NH-N and total phosphorus of 35.1， 5.20， 3.10 and 0.15 mg/L， respectively， with a total removal efficiency of 91.1%， 67.1%， 70.5% and 89.3%， respectively. In this process， short-circuited organic carbon from brewery wastewater was beneficial for denitrification and second-sulfate reduction. The concentration of effluent fluoride was 6.22 mg/L， which also met the primary standard. Gas Chromatography-Mass Spectrometry analysis revealed that many types of refractory compounds were present in the inflow. Microbial community analysis performed in the summer by PCR-denaturing gradient gel electrophoresis and MiSeq demonstrated that certain special functional bacteria， such as denitrificans， phosphorus-accumulating bacteria， sulfate- and perhafnate-reducing bacteria， aromatic compound-degrading bacteria and organic fluoride-degrading bacteria， present in the bio-tanks were responsible for the acceptable specific biological pollutant reduction achieved.
