膜生物反应器用于微污染地表水处理的中试研究

�第57卷�第1期��化���工���学���报�������Vol�57�No�1�2006年1月��Journal�of�Chemical�Industry�and�Engineering�(China)��January�2006研究简报��膜生物反应器用于微污染地表水处理的中试研究��郝爱玲,陈永玲,顾�平��(天津大学环境科学与工程学院,天津300072)关键词:饮用水处理;膜生物反应器;微滤;地表水;有机物去除;膜污染中图分类号:TU991�������文献标识码:A文章编号:0438-1157(2006)01-0136-04TreatmentofpollutedsurfacewaterbyMBRprocessfordrinkingwaterproductionHAOAiling,CHENYongling,GUPing(SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,China)Abstract:InChinasurfacewaterpollutionhasmadequalitydrinkingwaterproductiondifficult�ThemajorpollutantsinsurfacewaterareorganicmattermeasuredbyCODMnandammonianitrogen�Toremovethesepollutantseffectively,membranebioreactor(MBR)wasstudiedasasubstitutefortheconventionalwatertreatmentprocess�Powderedactivatedcarbon(PAC)wasdosedintothereactortoenhancethetreatmentefficiency�ApilotscaleMBRwasoperatedcontinuouslyfor130days�Inthisperiod,79�1%ofCODMn,85�9%ofUV254,97�9%ofUV410,99�6%ofturbidityand97�4%ofNH3-Ncouldberemoved,andthetotalcol-igroupwasnotdetectableper100mlinthetreatedwater.Concerningtheaccumulationofrefractoryorganicsinthereactor,anindexAm(organicsaccumulativefactorinthemixedliquor)wasproposed�IthelpstoevaluatetheefficiencyofbiodegradationandPACadsorptionoforganicpollutantsinthereactor�Moreover,Amappearedtohaveanegativeeffectontheremovalefficiencyoforganicpollutants.Attheendofthepilottest,three-stepcleaningswerecarriedoutforthefouledmembrane�Thefluxrecoveryforeachcleaningstepwasmeasured,andthecompositionoftheelutedfoulantsaftereachchemicalcleaningstepwasanalyzed�Theresultsdemonstratedthatorganicpollutantswerethemajormembrane-foulingsubstances,andchemicalcleaningwith0�4%sodiumhypochloritecouldremovethemefficiently.Keywords:drinkingwatertreatment;membranebioreactor;microfiltration;surfacewater;organicmatterremoval;membranefouling��2005-08-03收到初稿,2005-11-14收到修改稿.联系人及第一作者:郝爱玲(1980�),女,博士.基金项目:天津市科技发展计划项目(013105211).�引�言地表水作为主要的饮用水源水,其日益严重的污染问题给传统的水处理工艺带来巨大挑战.将膜生物反应器(MBR)应用于微污染水处理,进行饮用水制备是解决上述问题的一项新技术[1].向MBR内投加粉末活性炭(PAC)所形成的MBR-