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2006年1月化工JournalofChemicalIndustry学报andEngineering(China)VoI．57No．1January2006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(2oo6)Ol一0136—04ofpollutedsurfacewaterbyMBRprocessforHAOAiling，CHENYongling。GUPing(SchoolofEnvironrnentalScienceandEngineering，TianjinUniversity，Tianjin300072，China)Abstract：InChinasurfacewaterpollutionhasmadequalitydrinkingwaterproductiondifficult．ThemajorpollutantsinsurfacewaterareorganicmattermeasuredbyCODMnandammonianitrogen．Toremovethesepollutantseffectively，membranebioreactor(MBR)wasstudiedasasubstitutefortheconventionalwatertreatmentprocess．Powderedactivatedcarbon(PAC)wasdosedintothereactortoenhancethetreatmentefficiency．ApilotscaleMBRwasoperatedcontinuouslyfor130days．Inthisperiod，79．1ofCODM，85．9ofUV254，97．9ofUV，99．6ofturbidityand97．4ofNH3-Ncouldberemoved，andthetotalcoli—groupwasnotdetectableper100mlinthetreatedwater．Concerningtheaccumulationofrefractoryorganicsinthereactor，anindexA(organicsaccumulativefactorinthemixedliquor)wasproposed．IthelpstoevaluatetheefficiencyofbiodegradationandPACadsorptionoforganicpollutantsinthereactor．Moreover，Amappearedtohaveanegativeeffectontheremovalefficiencyoforganicpollutants．Attheendofthepilottest，three—stepcleaningswerecarriedoutforthefouledmembrane．Thefluxrecoveryforeachcleaningstepwasmeasured，andthecompositionoftheelutedfoulantsaftereachchemicalcleaningstepwasanalyzed．Theresultsdemonstratedthatorganicpollutantswerethem~jormembrane-foulingsubstances，andchemicalcleaningwith0．49，6sodiumhypochloritecouldremovethemefficiently．Keywords：drinkingwatertreatmentlmembranebioreactor；microfiltration；surfacewater；organicmatterremoval；membranefouling。．舌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2005-08-03收到初稿，2005—11—14收到修改稿联系人殛第一作者：郝爱玲(198O一)，女，博士。基金项目：天津市科技发展计划项目(01310521I)．饮用水制备是解决上述问题的一项新技术．向MBR内投加粉末活性炭(PAC)所形成的MBR—PAC组合工艺集物理吸附、生物净化和膜分离于一体，具有良好的污染物去除能力．目前，将MBR作为微污染水处理主体工艺的研究并不多见．Receiveddate：2005—08—03．Correspo