不同工艺处理漓江微污染源水

Treatment of micro-polluted source water of Lijiang River by different processes

以漓江源水为研究对象,当进水CODMn的质量浓度为4～7 mg/L时,比较不同工艺处理效果。进行模拟水厂的混凝沉淀实验,找出对CODMn去除效果较佳的条件。结果表明:在适宜的Fenton试剂投加量下,并不能使CODMn的出水浓度达标;粉末活性炭虽能有效吸附有机微污染物,但单独采用粉末活性炭的相对成本较高;比较不同联合工艺的处理效果发现,经粉末活性炭-Fenton-聚合氯化铝联合工艺处理后,CODMn出水达到标准要求。

Different processes for treatment of micro-polluted source water of the Lijiang River were compared when CODMn in input water was between 4 mg/L and 7 mg/L. Through simulation of coagulation and sedimentation in a water treatment plant, we determined the optimal conditions for removal of CODMn. 3＂he results show that an appropriate dosage of Fenton＇ s reagent cannot make the effluent concentration of CODMn meet the standards. Although powdered activated carbon can effectively adsorb organic micro-pollutants, there is a relatively high cost of using it alone. Through comparison of treatment effects of different joint processes, we found that with the powdered activated carbon-Fenton-polyaluminium chloride combined process treatment, the effluent of CODMn could meet the standards.