混凝与低氧-好氧两段活性污泥法处理造纸废水的研究

Study on the Treatment of Pulp and Paper Mills Wastewater by Coagulation and Anoxic-aerobic Activated Sludge Process

采用混凝与低氧-好氧两段活性污泥法对某造纸厂综合废水的处理进行了研究。试验数据表明,实验室研究与现场中间试验结果无显著性差异。环境监测站最终验收监测指出,当进水化学需氧量((CODcr)为6230mg/L时,其总去除率为93.8％,各项指际均达到国家行业标准GB3544—92《造纸工业水污染排放标准》的二级(非木浆)要求。

The treatment of pulp and paper mill wastewater by coagulation and anoxic-aerobic activated sludge process was studied in this paper. The testing data showed that the results from tests in the laboratory and on the spot had no significant variance. The acceptance tests by environmental monitoring station demon-strated that the total removal rate of CODcr was 93. 8% when CODcr of import wastewater was 6 230 mg/L. The quality parameters of drain off water all reached grade-2 requirements according to the pollutant dis-charge standard for pulp and paper mills wastewater GB3544-92.