重金属离子捕集法(DTCR)高效除砷技术研究

Study on High Efficiency Arsenic Removal by Heavy Metal Ion Trapping (DTCR)

针对不同的废水对象,分别开展反应pH值、DTCR捕收剂、混凝剂优选等除砷研究,表明酸性含砷废水采用中和法即可使水中砷含量达国家环保要求,且水体中铁砷比值越大越有利于砷的去除。对碱性含砷废水同时进行扩大试验,砷去除率达99.86%,出水砷含量0.31 mg/L,低于国家环保污水外排要求。该研究结果对环保处理系统短流程及应急性除砷方面具有一定指导意义。

Aiming at different object of wastewater, respectively research on PH value of reaction, DTCR collector,coagulant optimization arsenic removal, which indicated that the acid wastewater containing arsenic by using neutralization method can make arsenic contained in water meet the national environmental protection requirements, and the high ratio iron arsenic water was conducive for arsenic removal. Meanwhile expanded the test of alkaline, the arsenic removal ratio could reach 99.86%, and the effluent water arsenic content was 0.31 mg/L, which was lower than national standard of wastewater discharge. The study results had significance guiding for short process of environmental protection system, and emergency arsenic removal operation.