秦岭南麓某流域锑污染应急处置试验研究

Study on Emergency Disposal of Antimony Pollution in a Surface Water in the South of Qinling Mountain

针对秦岭南麓某流域河流水中重金属锑污染问题,采用混凝沉淀联合吸附法开展除锑试验研究。结果表明,混凝沉淀法(PFS)联合吸附法(天然锰砂)可以有效去除水中的锑,污染水体锑浓度为2290μg/L,当混凝剂聚合硫酸铁(PFS)投加量为0.64 g/L时,混凝沉淀反应完成后清液经单级天然锰砂反应柱处理后,锑去除率为99.8%,出水中锑浓度低于《地表水环境质量标准》(GB 3838-2002)Ⅲ类标准中5μg/L的规定,满足标准限制要求。

Aiming at the problems of antimony pollution in a watershed at the south of Qinling Mountains,an experimental study on antimony removal was carried out by coagulation precipitation combined adsorption method.The results show that the flocculation sedimentation method(PFS)combined with the adsorption method(natural manganese sand)can remove antimony in water.When the dosage of PFS is 0.64 g/L,the effluent passes through the natural manganese sand reaction column,and the antimony removal rate is 99.8%.The antimony concentration in the effluent meets the requirements of 5μg/L in the Class III standard of«Environmental quality Standards for surface water»(GB 3838-2002).