六氯苯污染源水的饮用水应急处理工艺研究  

Emergent treatment processes for drinking water in HCB polluted source water

作　　者：楚文海[1] 高乃云[1] 李青松[1] 陈蓓蓓[1] 姚娟娟[1] 尚亚波 秦祖群 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092 [2]镇江市自来水公司,江苏镇江212001

出　　处：《中国环境科学》2008年第6期507-511,共5页China Environmental Science

基　　金：国家“十一五”课题(2006BAJ08B06);国家“863”项目(2002AA601130,2004AA649410);江苏省科技厅社会发展计划项目(BS006039)

摘　　要：针对长江水源地可能发生的六氯苯(HCB)突发污染事故,开展了应急处理工艺研究.考察了混凝剂聚合硫酸铁(PFS)投加量、KMnO4预氧化和木质粉末活性炭(PAC)吸附预处理对HCB去除效果的影响.根据静态试验,设计了三因素三水平正交试验,进一步考察了KMnO4氧化与PAC吸附联用预处理-混凝沉淀工艺去除HCB的效果.结果表明,常规处理无法有效去除HCB;单独KMnO4预氧化无法明显改善混凝沉淀对HCB的去除效果;PAC联用吸附预处理可明显提高去除效率.正交试验结果表明,在PAC,PFS,KMnO4投加量分别为40,5.0,0.5mg/L的最佳条件下,HCB去除率为98.97%,但浊度在2NTU以上.选取PAC吸附预处理-混凝沉淀工艺进行中试试验,结果表明,在PFS和PAC投加量分别为15mg/L和40mg/L时,HCB的去除率在98%以上,HCB剩余浓度和浊度分别在1μg/L和1NTU以下.In the case of the shock loading of hexachlorobenzene （HCB） in the Yangtze water head site, emergency treatment processes for drinking water were developed. The influence of the polyferric sulfate （PFS） coagulant dosage, KMnO4 preoxidation and powdered activated carbon （PAC） adsorption coupled with coagulating sedimentation was examined according to the raw water quality variation and practical emergency treatment experience. Orthogonal experiments were carried out to investigate the effect of KMnO4 preoxidationon on PAC adsorption combined with coagulating sedimentation. HCB couldn’t be removed effectively to guarantee the final effluent quality. Single KMnO4 preoxidation was unable to improve the removal efficiency of HCB by coagulation sedimentation, while the PAC adsorption pretreatment coupled with coagulation sedimentation proved to be effective, and the removal effect of static experiment was better than dynamic pilot tests. The orthogonal experimental results showed that the removal rate of HCB reach 98.97% under the most favorable condition that the dosages of PAC, PFS and KMnO4 were 40,5.0 and 0.5mg/L, respectively. The final HCB concentration and turbidity dropped below 1μg/L and 1NTU when the most favorable dosages of PAC and PFS were 40mg/L and 15mg/L.

关 键 词：六氯苯 应急处理 粉末活性炭 饮用水 

分 类 号：X703[环境科学与工程—环境工程] TU991.2[建筑科学—市政工程]