化学沉淀法去除水中钼的特性研究  

Molybdenum removal in water by chemical sedimentation

作　　者：马越[1] 吴维[1] 韩宏大[1] 

机构地区：[1]天津市自来水集团有限公司,天津300040

出　　处：《供水技术》2011年第3期26-27,31,共3页Water Technology

摘　　要：采用自来水为原水,考察了不同pH值条件下三氯化铁、聚合氯化铝对重金属钼的去除效果。结果表明,原水pH值为7.5时,投加15 mg/L三氯化铁能将原水中标准限值100倍(7mg/L)的钼去除到0.07 mg/L以下;聚合氯化铝对钼的去除效果较差,对原水中标准限值5倍的钼的最高去除率仅为11%;三氯化铁对钼的去除效果明显优于聚合氯化铝,且处理后残余铁未超标。The removal efficiencies of ferric chloride and polyaluminum chloride（PAC） on heavy metal molybdenum were investigated in different pH condition by adopting tap water as raw water.The results indicated that the molybdenum which was 100 times（7 mg/L）of standard value in raw water could be conducted below 0.07 mg/L when pH value was 7.5 in raw water and dosage of ferric chloride 15 mg/L.The removal effect of PAC on molybdenum was not satisfied,and the maximum removal rate of molybdenum which was 5 times of standard value was 11%.The removal effect of ferric chloride was obviously superior to PAC,and residual iron after treatment did not exceed the standard value.

关 键 词：化学沉淀法 钼 三氯化铁 聚合氯化铝 

分 类 号：TU991.27[建筑科学—市政工程]