Study+on+the+Fouling+Propensity+of+Effluent+from+the+MBR+System+for+the+Electronics+Wastewater+with+

MeteorologicalandEnvironmentalResearch2018,9(2)：72-76StudyontheFoulingPropensityofEffluentfromtheMBRSystemfortheElectronicsWastewaterwithHighSalinityHanYongping1**,LiKeyi1,LiHaiyan1,ZhouWenping1,LiHongmei2HanYongping1**,LiKeyi1,LiHaiyan1,ZhouWenping1,LiHongmei21.BeijingKeyLaboratoryoftheResourceUtilizationofBiomassWaste,BiochemicalEngineeringCollege,BeijingUnionUniversity,Beijing100023,China；2.PublicEngineeringRoomoftheDesignDepartment,ChinaHuanqiuContracting&EngineeringCo.,Ltd.,Beijing100012,ChinaAbstractTotheelectronicswastewaterwithhighsalinity,thefoulingpropensityofeffluentfromthemembranebioreactor(MBR)systemplayedanimportantroleforthedesignandlong-termoperationalsustainabilityoftheMBR+ReverseOsmosis(RO)system.Inthistext,theeffluentquali­ty,settlingperformanceandmembranefoulingwereresearchedwiththreedimensionexcitation-emissionfluorescencespectra(EEM)andscan­ningelectronmicroscope(SEM)-EnergyDispersiveSpectrometer(EDS).Theresultsshowedthattherewerefeworganicswithastrongadhesionintheeffluent.Themetalionsintheeffluentnotonlyhadacomplexationreactionwiththemacromoleculesfulvicacidandproteinbutalsowithsili­concolloid.ItcausedacompactfoulinglayerontheROmembranesurface.ButtheorganicsandmostofinorganicmatterscouldformsettlingoffloesandberemovedfromtheeffluentbyimprovingpHoftheeffluent,whichwouldrelievethemembranefouling.Inaddition,theremovalofmetalionsinthefoulinglayerwascriticalforenhancingthecleaningefficiencyofROmembrane.KeywordsElectronicswastewater；MBR；RO；MembranefoulingDOI10.19547/j.issn2152-3940.2018.02.017Integratedcircuit(IC)isthebasisofinformationhigh-techindustry.However,alotofpurewatershouldbeusedinICmanufacturingandencapsulationprocess,andthenalotofacidandalkaliwastewatercontainingorganicdetergentsandadditives,fluoridewastewater,ammonia-containingwastewaterandchemicalmechanicalgrindingwastewaterweregenerated.Thewastewaterisoftendischargedinmunicipalpipenetworkafterpretreatment(acid-baseneutralization,coagulation,pre­cipitation,defluorination,ammoniaremovalb