氯对粉末活性炭吸附微囊藻毒素能力的影响  

Effect of Chlorine on PAC's Ability to Adsorb Microcystin

作　　者：刘成[1] 高乃云[1] 董秉直[1] 刘遂庆[1] 赵建夫[1] 

机构地区：[1]同济大学污染控制与资源化国家重点实验室,上海200092

出　　处：《环境科学》2007年第5期997-1000,共4页Environmental Science

基　　金：国家高技术研究发展计划(863)项目(2002AA601130;2004AA649410);国家科技攻关计划重大项目(2003BA808A17)

摘　　要：采用瓶点法,考察了预氯化工艺对粉末活性炭(PAC)吸附黄浦江原水中2种微囊藻毒素(MC-RR、MC-LR)效果的影响.结果表明,粉末活性炭与氯同时投加可以大大提高微囊藻毒素的去除率(20%以上),原因可能是粉末活性炭表面的官能团与HClO作用催化了微囊藻毒素的去除;而粉末活性炭和氯在不同投加点投加时,则没有这种强化作用,相反氯会不同程度地降低粉末活性炭的吸附效果(降低5%-10%);氯对微囊藻毒素的强化去除作用随着PAC投加量的增大而逐渐弱化;粉末活性炭单独使用时,投加量为10 mg/L、接触时间为6 h,MC-RR和MC-LR的去除率分别在55%和45%左右.Bottle-point experiments were conducted in Huangpu river raw water to examine the extent to which chlorine influenced the ability of powdered activated carbon （PAC） to adsorb two kinds of microcystins （MC-RR and MC-LR）. The result shows that,when adding PAC and chlorine at the same point, chlorine can enhance the removal effect of the combined process （about 20% ）, which may be because the surface of PAC catalyzes the reaction between mirocystin and chlorine molecule, when adding PAC and chlorine at different points, the strengthening effect disappear [chlorine reduces the ability of PAC to microcystins to some extent （5% - 10% ） ], the effect of chlorine to PAC becomes weak when raise the dosage of PAC. PAC can effectively remove microcystins （the removal effect can reach 55% and 45% for MC-RR and MC-LR respectively at the dosage of 10 mg/L, contact time of 6 hours） when using PAC alone.

关 键 词：粉末活性炭吸附 预氯化 微囊藻毒素 

分 类 号：X522[环境科学与工程—环境工程] TU991.2[建筑科学—市政工程]