典型北方高碱度微污染水体强化混凝的示范研究

第26卷第6期2006年6月环境科学学报ActaScientiaeCircumstantiaeVol.26,No.6Jun.,2006基金项目:国家“863”高技术研究计划(No.2002AA00601140)SupportedbytheHi2TechResearchandDevelopmentProgram(No.2002AA00601140)作者简介:晏明全(1976-),男,博士研究生;3通讯作者(责任作者),E2mail:wgds@rcees.ac.cnBiography:YANMingquan,(1976-),male,PhD,;3Correspondingauthor,E2mail:wgds@rcees.ac.cn晏明全,王东升,曲久辉,等.2006.典型北方高碱度微污染水体强化混凝的示范研究[J].环境科学学报,26(6):887-892YanMQ,WangDS,QuJH,etal.2006.Enhancedcoagulationonatypicalhighalkalinityandmicro2pollutedNorth2Chinasourcewater[J].ActaScientiaeCircumstantiae,26(6):887-892[免审稿件]责任编辑提示:本刊欢迎广大读者针对免审稿件提出各种意见典型北方高碱度微污染水体强化混凝的示范研究晏明全1,王东升1,3,曲久辉1,汤鸿霄1,何文杰21.中国科学院生态环境研究中心环境水质学国家重点实验室,北京1000852.天津市自来水公司,天津300040收稿日期:2006203224录用日期:2006205211摘要:以高碱度、受有机物污染的典型北方水体为例,探索适宜的强化混凝技术.在水质调查的基础上,提出适合水质特征的强化混凝目标.研究了高碱度水体强化混凝技术方法.研究表明,可以通过3条技术途径提高水体中有机物的去除效率.其一在混凝前优化pH,促进絮凝剂水解形成中聚体,AlCl3在pH6左右,FeCl3在pH5左右时,有机物去除率可以提高一倍左右;其二是强化沉淀软化;其三是絮凝剂优化.结合我国实际情况,通过对传统絮凝剂进行改性,研制出了适合我国北方水质特征的高效絮凝剂,能较传统絮凝剂将有机物去除率提高30%以上.关键词:强化混凝;PACl;天然水体有机物(NOM);pH文章编号:025322468(2006)0620887206中图分类号:X52文献标识码:AEnhancedcoagulationonatypicalhighalkalinityandmicro2pollutedNorth2ChinasourcewaterYANMingquan1,WANGDongsheng1,3,QUJiuhui1,TANGHongxiao1,HEWenjie21.StateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchCenterforEco2EnvironmentalSciences,ChineseAcademyofSciences,Beijing1000852.TianjinCityWaterSupplyGroupCo.Lid.,Tianjin300040Received24March2006;accepted11May2006Abstract:ThepaperstudytheenhancedcoagulationcriterionforChinathroughacasestudyofhighalkalinity,micro-pollutednorth-chinawater.Thepaperrendertheseasonalenhancedcoagulationtargetthroughbenchtest,basedonwatercharacteristicsinvestigation.Threemeasureseswerefoundinthepaperforthistypewater,thefristisisadjustingpHduringcoagulationinfavorofmid-polymerproduct,whichproducewellataboutpH6forAlCl3,andpH5forFeCl3,atthosepHstheremovalofTOCincreasemorethanonetime;Thesecondisenhancedprecipitativesoftening,thethirdiscoagulantreform.Wehavesucceededreformingconventionalcoagulantforthiswater,whichcouldincrease30%more