原水突发性铅污染应急处理研究

Emergency treatment of lead contamination in raw water

探讨了采用活性炭吸附、活性炭吸附+聚合氯化铝混凝沉淀联用、聚合氯化铝强化混凝沉淀3种方法对水中铅的去除效果。结果表明,单独采用活性炭吸附对水中铅的去除效果不明显;采用活性炭吸附+聚合氯化铝混凝沉淀联用与单独采用聚合氯化铝混凝沉淀对水中铅的去除效果差别不大;混凝沉淀可有效去除单纯水源水、水源水与运河水等体积配水条件下的铅,最高去除率达到90%,最大去除能力为5倍标准限值。

The removal effects of lead in water were discussed adopting three kinds of methods of activated carbon adsorption, combination of activated carbon adsorption and polyaluminum chloride （PAC） coagulation sedimentation and enhanced PAC coagulation sedimentation. The results showed that the removal effect on lead was not obviously adopting activated carbon adsorption solely. It did not have obvious difference on lead removal adopting combination of activated carbon adsorption and polyaluminum chloride （PAC） coagulation sedimentation and PAC coagulation sedimentation solely. Coagulation sedimentation could remove lead effectively in source water and source water with canal water mixed with the same volume. The highest removal rate could reach 90%, and the maximum removal ability was five times of standard limit value.