①UF董秉直1,曹达文1,范瑾初1,李景华2,徐 强2(1., 200092;2., 232007) :黄浦江原水中的溶解性有机物是造成膜过滤阻力的重要因素。投加混凝剂会大大降低膜过滤阻力。使膜过滤阻力最小的最佳混凝剂投加量与去除水中溶解性有机物效果最佳的投加量一致。粉末活性炭的投加对膜过滤阻力影响不大。:UF膜;膜阻力;混凝;粉末活性炭:TQ028.8 :A :1000-3770(2001)02-0080-04 (MF)(UF)。MF、UF,,。,、,。。,,,。,,。,,,,。,,。,,。。。、(PAC),,PAC,。1 试验方法和装置、。(1),;(2);(3),,;(4),。34。,;(5)0.45μm,。,。: R=P_×J(1),R-(1/m);P-(Pa);J-(m/s);_-(Pa·s)。 Re: Rc=a·mcAm(2),a-;mc-;Am-。Kozeny:第27卷 第2期2001年4月 TECHNOLOGYOFWATERTREATMENT Vol.27No.2Apr.,2001①:2000-01-20 (,)(990002)DOI:10.16796/j.cnki.1000-3770.2001.02.005 a=180·(1-f)d2p·f3(3),dp-;f-。,mc,Am,aRc。Rc=a·mcAm=a·C·VAm=a·V(4),V-;a-;C-(4),,aRc。300mL。。(UF)(PAN),50000Daltons。,3.32×10-3m2,UF。,0.1MPa。。,100r/min。2 试验结果与讨论2.1 图1 黄浦江原水过滤膜阻力变化图2 黄浦江原水浓差极化膜阻力变化0.45μm,1,2。 1,2,;,,。[1]。2.2 。,。[2],。Al2(SO4)3。2~14mg/L。30min,。3。图3 混凝剂投加量与膜阻力关系图4 混凝剂投加量对去除有机物的影响 3,,,6mg/L,。,4~6mg/L,,,。,4mg/L,,;6mg/L。,,,。Wiesner[3],81 ,UF。,。(DOC)UV2544,5。图5 混凝剂投加量对去除有机物的影响,,DOC、UV254,6mg/L,。,DOC、UV254。[4],。,。,,6mg/L。2.3 (PAC)图6 投加PAC对膜过滤阻力的影响 UF。,PAC,PAC,。PAC,,。50、100、200mgPAC1L,30min,。6。6,PAC,。PAC,。,PAC10~500μm,,,。,PAC。PAC,,,,PAC。3 结 论。,。6mg/LAl2(SO4)3。。[1] ,.UFにうフアウリング()[J].,1998,67(1):16-24.[2] .をにすゐMFとUFシステム[J].,1994,63(7):16-28.[3] MRWiener,etal.MembraneFiltrationofCoagulatedSuspensions[J].JourEnvironEng1989,115(1):20-40.[4] ,.UFにうフアウリング()[J].,1998,67(3):11-19.8227 2 THECHARACTERISTICSOFRESISTANCEINFILTERINGNATURALRAWWATEBYUFPROCESSDONGBing-zhi1,CAODa-wen1,FANJin-chu1,LIJing-hua2,XUQiang2(1.StateKeyLaboratoryofPollutionControlandResourceReuse,TongjiUniversity,Shanghai200092;2.HuainanPublicUtilitiesBureau,Huainan,232007,China)Abstract:Themajorfactorcausingresistanceinmembranefiltrationisdissolvingorganicmatterinrawwater.Theadditionofcoagulantcanreduceresistanceinmembranefiltrationgreatly.Theoptimumdosingamountofcoagulantwhichmaketheminimumresistanceisinconformitywiththeoptimumvaluewhichremovemaximumdissolvedorganicmatterinwaterstudied.TheadditionofPAChasnoobviouseffectonresistanceofmembranefiltration.Keywords:UFmembrane;membraneresistance;coagulation;PAC“”“”“(96-A13-01-07)”、“(96-A13-01-01)”2001227、、。、。“”1997“500/”、,,,、、。,15℃,GB5749-85,TDS500mg/L,35~40%,3.5(),3.0。,。“”,、、、、,2000Υ100Υ200,4″98%,6.0m3/d。。()83 ,UF