臭氧-生物活性炭-金属膜联用工艺在水处理中的应用

净水技术2017,36(2):69-72,77WaterPurificationTechnology向嫄，李伟英，许晨，等.臭氧-生物活性炭-金属膜联用工艺在水处理中的应用[1[].净水技术，2017,36(2):69-72,77.XiangYuan,LiWeiying,XuChen,etal.Applicationofcombinedprocessesofozone-biologicalactivatedcarbon-metallicmembraneinwatertreatment[J].WaterPurificationTechnology,2017，36(2):69—72,77.臭氧-生物活性炭-金属膜联用工艺在水处理中的应用向嫄u，李伟英〃，许晨'高炜鹏\王瑾\张伟3(1.同济大学环境科学与工程学院，上海200092;.长江水环境教育部重点实验室（同济大学），上海200092;.成都川力智能流体设备股份有限公司，四川成都611530)摘要采用臭氧-生物活性炭（〇3-bac)-金属膜联用工艺去除水中污染物，探讨膜污染及膜清洗方法。试验结果表明，联用工艺对浊度、菌落总数、D0C的平均去除率分别为86.1%、96.2%、66.4%，出水颗粒总数低于100个/mL。恒通量(2m3/m2.h)终端过滤条件下，金属膜连续过滤60mm后其跨膜压差由0MPa升至0.7MPa。扫描电镜观察发现小颗粒污染物堵塞膜孔、覆盖膜表面，导致膜通量下降。采用膜滤后水反冲洗污染膜4mm(0.4MPa)，膜通量恢复率为86.4%;水反冲洗后分别采用2%柠檬酸和2%氢氧化钠对污染膜进行化学浸泡，通量恢复率均高于97.0%。关键词水处理臭氧生物活性炭金属膜联用工艺中图分类号：TU991.2文献标识码：A文章编号：1009-0177(2017)02-0069-05DOI：10.15890/j.cnki.jsjs.2017.02.012ApplicationofCombinedProcessesofOzone-BiologicalActivatedCarbon-MetallicMembraneinWaterTreatmentXiangYuan1,2,LiWeiying1,2,XuChen1,2,GaoWeipeng1,WangJin1,ZhangWei3(1.CollegeofEnvironmentalScienceandEngineering，TongjiUniversity,Shanghai200092,China；2.StateKeyLaboratoryofPollutionControl&ResourceReuse,TongjiUniversity,Shanghai200092,China；3.ChengduChuanliuIntelligenceFluidEquipmentCo.,Ltd.,Chengdu611530,China)AbstractRemovalofpollutantsinwaterbycombinedprocessesofozone-biologicalactivatedcarbon(0^BAC)andmetallicmembranewasinvestigated.Membranefoulingandcleaningmethodswerestudiedbyauthors.Resultsshowedthataverageremovalrateofturbidity,totalbacteriaandD0Cbytheintegratedprocesswas86.1%，96.2%and66.4%,respectively.Thenumberofparticlesinmembraneeffluentwaslessthan100p/mL.Fordead-endmodewithconstantflux(2m3/m2•h),thetrans-membranepressureofthemetallicmembraneincreasesfrom0MPato0.7MPaafteroperatingfor60minutes.Scanningelectronmicroscopyobservationsshowedthatsmallparticlesblockmembraneporesorcovermembranesurface,thuscausingmembranefluxdeclined.Membranefluxrecoveryratiowas86.4%afterbackwashingbymembraneeffluentfor4min(0.4MPa).Metallicmembranewasthensoakedin2%citricacidor2%sodiumh