突发性水体敌百虫污染的应急处理研究

Simulated Emergency Treatment of Water Pollution by Dipterex

文章模拟突发有机磷农药敌百虫污染,采用粉末活性炭吸附法和混凝沉淀法进行应急处理研究。试验结果标明:粉末活性炭吸附法适合处理低浓度水样,对0.5 mg/L的敌百虫溶液,活性炭投加量为47.608 mg/L(20℃,240 min)、78.421 mg/L(30℃,240 min)和138.207 mg/L(40℃,240 min),处理后的水样中敌百虫浓度均低于生活饮用水卫生标准中规定的0.05 mg/L。混凝沉淀法处理5 mg/L的敌百虫水样,投加混凝剂聚合氯化铝(PAC)160 mg/L、助凝剂聚丙烯酰胺(PAM)4 mg/L时,水中敌百虫剩余浓度低于生活饮用水卫生标准中规定的0.05 mg/L。

Simulated water samples representing Dipterex-polluted water of a surface body caused by a spill accident of a factory producing organo-phosphorus pesticides were treated using different methods,including adsorption with powder activated carbon and coagulation/sedimentation with PAC plus PAM as coagulant aids.The bench scale experiment conducted showed that adsorption with powder activated carbon could remove Dipterex from water with initial concentration 0.5 mg/L to 0.05 mg/L,while coagulation/sedimentation with PAC plus PAM could remove Dipterex of the initial concentration 5 mg/L from the water with the similar low residue concentration 0.05 mg/L.