MBRPAC组合工艺处理污水厂尾水的中试研究朱亮

MBR/PAC朱　亮1,　朱凤春1,　许旭昌2,　徐伟欣1,　王占生3,　顾军农4(1.河海大学环境科学与工程学院,江苏南京210024;2.南通规划设计有限公司,江苏南通226000;3.清华大学环境科学与工程系,北京100084;4.北京自来水集团,北京100038)　　　:　在MBR中试的基础上,向MBR反应器中投加40g/L粉末活性炭(PAC)构成MBR/PAC组合工艺并处理污水厂尾水。试验结果表明:MBR/PAC系统的出水BOD5≤4mg/L、COD≤18mg/L、氨氮≤0.3mg/L、浊度≤0.2NTU,处理效果优于MBR系统。PAC能吸附并降解易引起膜污染的有机物,有效降低了膜污染,减缓了过膜压力的增长趋势,保护了膜组件,并且运行效果良好。通过气洗和反冲洗能很好地维持膜的透过性能,离线清洗可基本恢复膜的透过性能。　　:　膜生物反应器(MBR);　粉末活性炭(PAC);　污水厂尾水:X703　　:C　　:1000-4602(2009)05-0059-04CombinedProcessofMBRandPACforTreatmentofTailwaterfromWWTPZHULiang1,　ZHUFeng-chun1,　XUXu-chang2,　XUWei-xin1,　WANGZhan-sheng3,　GUJun-nong4(1.CollegeofEnvironmentalScienceandEngineering,HohaiUniversity,Nanjing210024,China;2.NantongUrbanPlanningandDesignCo.Ltd.,Nantong226000,China;3.DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China;4.BeijingWaterworksGroup,Beijing100038,China)　　Abstract:　OnthebasisofMBRpilottest,acombinedprocessofMBRandPAC(40g/L)wascomposedtotreattailwaterfromWWTP.TheresultsshowthattheBOD5,COD,NH+4-Nandturbidityintheeffluentofthecombinedprocessareequaltoorlessthan4mg/L,18mg/L,0.3mg/Land0.2NTUrespectively.ItstreatmentefficiencyisbetterthanthatinMBRalone.PACcandegradeorganiccompoundswhicheasilyresultinmembranefouling,thusreducingmembranefouling,alleviatingthein-creasingtrendoftransmembranepressureandprotectingmembranemodule.Thepracticaloperationshowsagoodeffect.Airwashandbackwashcanmaintainhighpermeabilityofmembrane.Itspermeabilitycanberecoveredmainlybyoff-linewash.　　Keywords:　membranebioreactor(MBR);　powderedactivatedcarbon(PAC);　tailwaterfromWWTP　　(MBR)、,、、、、、[1～5]。,、,。、[6～10]。·59·第25卷　第5期2009年3月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.25No.5Mar.2009,MBR,MBR(PAC),MBR/PAC,MBR、MBR/PAC,MBR/PAC。1　试验材料及方法1.1　1。1　Fig.1　Flowchartoftreatmentprocess,80cm×120cm×160cm,1.2m3。,、,。,,,。FP-A1(PVDF),520mm×1010mm,0.22μm,12.5m2,0.125m3/(h·),7。1.2　,SBR,,。1。1　Tab.1　QualityofinfluentCOD/(mg·L-1)BOD5/(mg·L-1)/(mg·L-1)TN/(mg·L-1)TP/(mg·L-1)/℃/NTU30～34228～1004.3～9248.6～1464.7～1113～21.66.5～315924619.682.37.0718.6341.3　300L/h;,10min、2min;HRT4h;30∶1。MBR、MBR/PAC。,MBRMLSS4500mg/L,DO1.8mg/L。MBR/PACPAC40g/L,MLSS7800mg/L、9000～13000mg/L;pH6.7～8.0,DO1～2.5mg/L。1.4　40g/LPAC,,。,,,。,,,,。1.5　COD:;:;:;:—;MLSS:;:HACH;pH:;DO:HACH。2　结果与讨论2.1　2.1.1　BOD5、CODMBR、MBR/PACBOD5、COD2、3。2　MBRMBR/PACBOD5Fig.2　BOD5removaleffectbyMBRandMBR/PAC·60·第25卷　第5期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　　MBRMBR/PACCODFig.3　CODremovaleffectbyMBRandMBR/PAC2,MBRBOD57mg/L、MBR/PACBOD54mg/L。,MBR/PACBOD5PAC,;,,,BOD5。3,MBRCOD≤30mg/L、MBR/PACCOD≤18mg/L。,MBR/PACCODPAC;,,PAC,,,[11],(COD80%)。2.1.2　、MBR、MBR/PAC4。4　MBRMBR/PACFig.4　NH3-NremovaleffectofMBRandMBR/PAC4,MBR3mg/L、MBR/PAC0.3mg/L。,,PAC,;,PAC,MBR/PACMBR,NH+4-N、。,MBR/PAC30%,MBR(15%)。MBR/PAC,,PAC,,,,,;PAC,,。MBR/PAC、,,。30,NO-3-N。2.1.3　,MBR0.4NTU、MBR/PAC0.2NTU。,;,PACMBR/PAC。2.2　2.2.1　MBR、MBR/PAC5。5　MBRMBR/PACFig.5　VariationoftransmembranepressureofMBRandMBR/PAC5,,MBR/PAC·61·朱　亮,等:MBR/PAC组合工艺处理污水厂尾水的中试研究第25卷　第5期MBR,,MBR/PAC,17d,MBR/PACMBR。,PAC,PACMLSS,,,MBR/PACMBR;,PAC,、,,。2.2.2　MBR/PACMBR/PAC、,。,2min,8h。(0.06MPa),,,。。,,,,。,,0.5%NaClO1%NaOH,。,,,;,,,;,,,。3　结论①　MBR,MBR/PAC:BOD5≤4mg/L、COD≤18mg/L、≤0.3mg/L、≤0.2NTU。②　PAC(BAC),,,,。,。:[1]　ChaizeS,HuyardA.Membranebioreactorondomesticwastewatertreatmentsludgeproductionandmodelingap-proach[J].WaterSciTechnol,1991,23(7-9):1591-1600.[2]　GǜenderB,KrauthK.Replacementofsecondaryclarifi-cationbymembraneseparation-resultswithtubular,plateandhollowfibermodules[J].WaterSciTechnol,1999,40(4-5):311-320.[3]　,,,.MBRUF[J].,2006,22(15):80-82.[4]　,,,.MBRMBR[J].,2006,22(3):28-31.[5]　,,.MBR[J].,2003,19(2):43-45.[6]　,,,.—[J].,2005,27(7):481-484.[7]　,,,.—[J].,2004,20(7):54-55.[8]　,,,.[J].,2006,26(3):271-274.[9]　,.[J].,2001,17(2):1-4.[10]　,.[J].,2001,17(3):12-15.[11]　,,,.[J].,2005,31(10):76-78.:15952008606E-mail:[e-mail]:2008-10-11·62·第25卷　第5期　　　　　　　　　　　　　　中国给水排水