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1、中国化学会第七届水处理化学大会暨学术研讨会论文集混凝沉淀过程中铝系混凝剂的铝的迁移转化规律,,,,2’”赵坐皇王茜杨宏伟蒋展鹏.,.,;(1清华大学环境科学与工程系北京1000842北京工业大学环境与能源工程学院北京100022):,。,摘要铝的毒性不仅取决于总铝浓度还与其形态密切相关通过模拟配水研究了硫酸铝和氯b和化铝两种单体态铝以及分别以AlAlc为优势形态的两种聚合氯化铝(狱C)在混凝过程中铝的迁,。:,移转化规律并研究了原水浊度和DOC对残余铝形态分布的影响结果表明在低浊体系中,,;但投加铝系混凝剂是导致出水余铝升高的主要原因在高浊体系中铝系混凝剂尤其是聚合铝具有一定的除铝功能
2、。混凝沉淀过程中单体铝混凝剂的的残余铝总量明显高于聚合铝混凝剂的残余铝总量。聚合铝的残余铝全部为悬浮态铝。单体铝混凝剂的残余铝中还存在着胶体态铝和溶解。,。态铝原水浊度和DOC浓度增加会提高残余铝中胶体态铝和溶解态铝的含量:,,,关键词残余铝铝形态铝系混凝剂混凝沉淀·TransPortandtransformationofaluminumofA卜basedcoagulantsincoagulat石onandsedimentationProeessua一an,,一,·zoHzhg,从叭NGQi9Hongwei,刀^Nezhanpeng,HAanZ物(1.DePartmentofEnvir
3、onmentalSeieneeandEngineering,TsinghuaUniversity,Beijing100084,China:2.Collegeofnvenanernneen,enveoeeoo,en,naEironmtaldEngyEgirigBijigUnirsityfThnlgyBijig100022Chi),Abstraet:Thetoxieityofalu而n15notonlydetenninedbythetotalalu而neoneentrationbutalsoeloselyrelatedumum.,tothealu而numsPeeiesIneoagulati
4、onandsed而entationProeessthetran印ortandtlansformationofbothalinumofumonoeeanueoa,whieneuesansulfateaneoe,aPo一eeanummrilumimgulantshildlumiumandlUIniumhlridndl邓rilurnimeoalantswithAloandAthePredontsPeeiesresPeetivelywasstudiedsimulatedrawwaterinthisPaPer.gu几ashaanbyTheinflueneesofturbidityandDOCin
5、wateronthesPeciesdistributionofresidualaluminwereinvestigatedasrawUIn.,一wellTheexPerimental爬sultsshowthatintheeoagulationsystemwithlowtUrbidity,it15theuseofAIb;isedeoagulants一,thateontributesmoretotheinereaseofresidualalinwhileintheonewithhigh饥叮bldity,theAIbasedeoagulantsumumesPeeiallyPolymeriea
6、lumineoagulantshaveafunetiontoremovealuminmthewater.Theresidualalinumumumfroumconeentraonoonoeeancoa5eratoonleeones.esu;、aunuotifmmrilumiumgUlants1highthanthfPlyriAllthreid1l而mfPolylnerieeoagulants15susPendedalu而num.BesidessusPendedaluminum,thereareeolloidalaluxninumandsoluble.nsoaluminuminthere
7、sidualaluminofmonomerieeoagulantsTheeoneentratiofeolloidalalnumandsolubleum~aluminumrisewhenthetothidityandtheeoneentrationofDOCinerease.,,一,Keywords:residualalinumalu而nsPeeiesAlbasedeoagulanteoagulationandsedimentationumum,
