超滤技术在马铃薯淀粉排放废水中的应用初探1

(,300072);;;;COD..,.7,,COD10000mg/L.,,,.COD,[1].,,.1111(PS)(PAN).1UFTable1MaintechnicalindexcomponentpH,,mm,m2,L/h,MPaPAN212560100175014076100012PS1135601150175014029100012:011MPa,201A;B;CFig.1Experimentsettings112HH2();().113,,.114,(115m).,COD8175mg/L,18419987ACTASCIENTIAECIRCUMSTANTIAEVol.18,No.4July,199801364%.115,PAN,PS,1.221121111Q=70L/h,23,PS,(2).2,,,,,,.21112P=011MPa,t=30,3.3,,COD,,,,.2Fig.2Relationbetweeninterceptionrateandpressure3Fig.3Relationbetweeninterceptionrateandfedrate4Fig.4Relationbetweeninterceptionrateandtemperature21113p=011MPa,Q=80L/h,4.4,,,,,,.21114pH011MPa,72L/h,23,pH,5.5,,pH.pH315,,,.,H2SO4pH35,,[2,3].212,,,,,,,,011mol/LNaOH40015h,15min,3444:5pHFig.5RelationbetweeninterceptionrateandfeedpH15min,2.2Table2EffectofUF2membraneregeneration,L/h,L/h,L/h,%PAN3410613301088PS30151315291095:PAN0105MPa,50L/h;PS011MPa,70L/h.,PS95%,PAN,.,,.311,.,,10,COD,;115,(,).21,:011MPa,70L/h,,pH315,.COD8175mg/L,COD3610mg/L,COD5518%.31,40011mol/LNaOH,90%.,,,,.1,..:,19892..:,19853MarianneNystrim,PiaJanvinen.JMembsSci,1991,60(223):275269APPLICATIONOFUF2TECHNOLOGYONTREATMENTOFWASTEWATERFROMTHEPREPARATIONOFPOTATOSTARCHCongPeijun,YuanYanxiao,WangShulian,SunHe,WangPongshu(DepartmentofChemicalEngineering,Tianjinuniversity,Tianjin3000072)ABSTRACTAnexperimentalstudywascarriedouttreatmentofwastewaterfromthepreparationpotatostarchbyusinghollowfiberUF2membrane.Influencesofpressure,feedrate,temperatureandpHonCODandproteinconcentrationintheeffluentwereinvestigated.Theregenerationofthehollowfibermembranewasalsodiscussed.KeywordsUF2membrane,potatostarch,wastewater,protein,COD.1996209226199720322444418