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1、中国环境科学2014,34(7)：1763~1768ChinaEnvironmentalSciencePAFC-PDM复合混凝剂强化混凝去除水库源水中的藻类*李明玉,孙玉君,刘丽娟,潘倩,汪琳,任刚(暨南大学环境工程系,暨南大学水处理工程研究中心,广东广州510630)摘要：将聚二甲基二烯丙基氯化铵(PDMDAAC)与聚合氯化铝铁(PAFC)复合制备了新型复合混凝剂PAFC–PDMDAAC(PAFC-PDM),对含藻的水库原水进行强化混凝处理研究.研究对比了PAFC-PDM,PAFC与预氯化工艺的除藻效果,并对其混凝除藻机理进行了初步探讨.结67果表明,对于藻细胞数为7.9
2、8×10~1.17×10cells/L和浊度为2.56~3.59NTU的水库原水,当PAFC-PDM投加量为1.0mg/L时(以Al2O3计),藻类和浊度的去除率分别达到93.5%和81.7%,显著优于PAFC的混凝处理效果;对藻细胞进行扫描电镜和预氯化副产物分析表明,预氯化杀藻除藻方法,不仅破坏了藻细胞结构,而且产生了三卤甲烷类氯化消毒副产物,影响饮水水质;采用PAFC-PDM强化混凝工艺除藻,不破坏藻细胞,无消毒副产物.关键词：强化混凝；除藻；聚合氯化铝铁；聚二甲基二烯丙基氯化铵中图分类号：X524文献标识码：A文章编号：1000-6923(2014)07-1763-0
3、6*RemovalofalgaefromreservoirresourcewaterwithanewcompositecoagulatantofPAFC-PDM.LIMing-yu,SUNYu-jun,LIULi-juan,PANQian,WANGLin,RENGang(DepartmentofEnvironmentalEngineering,JinanUniversity,WaterTreatmentEngineeringResearchCenter,JinanUniversity,Guangzhou510630,China).ChinaEnvironmentScienc
4、e,2014,34(7)：1763~1768Abstract：ThenewcoagulantPAFC-PDMcomposedofpolydimethydiallylammoniumchloride(PDMDAAC)andpolyaluminumferricchloride(PAFC)wasusedtoinvestigatetheeffectofalgaeremovalontheresourcewater.Experimentswithprechlorinationprocesstolookintoitseffectonalgaecellsurfacewerealsocond
5、ucted.Theresults67showedthatthenumberofalgalcellsof7.98×10~1.17×10cells/Landturbidityrawwaterreservoirfor2.56~3.59NTU,whenPAFC-PDMdosingquantityis1.0mg/L(Al2O3),algaeandturbidityremovalratereached93.5%and81.7%respectively,significantlybetterthanthatofPAFCcoagulationtreatmenteffect;Scanning
6、electronmicroscopy(sem)onthealgalcellsandprechlorinationby-productsanalysisshowedthatThelatternotonlydestroyedthealgalcellstructure,butalsoproducetrihalomethaneschlorinationby-products,affectedthewaterqualityofdrinkingwater.Toremovethealgae,thePAFC-PDMstrengtheningcoagulationprocessdoesnot
7、destroyalgalcells,andnodisinfectionby-products.Keywords：enhancedcoagulation；algae-removal；polyaluminumferricchloride；polydimethydiallylammoniumchloride随着工农业的发展,大量有机或无机氮、磷进异味,使饮用水感官性能下降,影响供水安全和人入湖泊,水库,引起水体富营养化和藻类繁殖.因水体健康.另外,高浓度藻类也会导致有机物浓度增中藻细胞具有种类复杂,数量多,比重小,且带较
