Advanced Treatment of Glyphosate Wastewater Tail Water by a Combining Biological and Physicochemical Methods
1. Zhenjiang Jiangnan Chemical Company Limited, Zhenjiang 212000, China;
2. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
Abstract In order to treat glyphosate phosphorus wastewater to meet the discharge standard, a series of experiments were carried out to treat glyphosate phosphorus tailwater from the process of chemical oxidation and cyclic activated sludge (CASS), by combining anaerobic and aerobic biological treatment of immobilized microorganism and flocculation treatment of polyaluminum ferric chloride (PAFC). The effects of operation parameters in each stage of the combined process on the results were investigated, such as residence time, dosage and reaction temperature. The optimal operation parameters of anaerobic aerobic biological process and the optimal dosage of physicochemical process were determined. By continuous operation of 30 days under the conditions of anaerobic retention time of 2 h, aerobic retention time of 6 h and PAFC dosage of 20 mg/L, the results showed that the removal ratio of chemical oxygen demand (COD), total phosphorus and ammonia nitrogen were 95%, 90% and 98% respectively, and the operation effect was stable.
ZHENG Min 1,ZHOU Lincheng 2,ZHU Jianmin 1 et al. Advanced Treatment of Glyphosate Wastewater Tail Water by a Combining Biological and Physicochemical Methods[J]. 化学反应工程与工艺, 2019, 35(6): 559-563.
ZHENG Min 1,ZHOU Lincheng 2,ZHU Jianmin 1 et al. Advanced Treatment of Glyphosate Wastewater Tail Water by a Combining Biological and Physicochemical Methods[J]. 化学反应工程与工艺, 2019, 35(6): 559-563.
