PACMBR组合工艺处理城市污水裴亮

PAC-MBR＊裴　亮1　姚秉华1,2(1.,710048;2.,710048)　采用PAC-MBR组合工艺处理城市污水,考察了该工艺对COD、NH+4-N和浊度的去除效果,试验结果表明,在水温26℃、DO4.5mgL及pH为6～9的条件下,组合工艺对COD、NH+4-N和浊度的去除效果较好,平均去除率分别达到88%、98%和98%以上,高于单独MBR工艺和常规工艺。出水COD约为22mgL,NH+4-N1mgL,浊度1NTU,水质优于中国建设部生活杂用水水质标准(CJ25.1-89)。已污染的膜可通过水反冲洗、水-酸洗、水-碱洗使膜通量恢复至新膜的43%、81%、89%。　粉末活性炭　膜生物反应器　生活污水　　　　　　　　＊(GG5074);(06JK215)。0　(MBR),、,,[1]。,,[2]。[3-5],MFMBR,,。PAC-MBR,,,,;,,[6]。MBRPAC,PACMBR、,PAC-MBR、MBR。1　1.1　试验装置和方法1。(68cm×28cm×51cm),70L,(PVDF),0.15μm,0.16mm,1m2。,,。(HRT)5～6h,、10、2min,PLC。25kPa,60kPa,5m3。,,1.5gL。1mm;。,PAC-MBR、MBR。20071—4,。1　　1.2　原水水质及测试项目,1。1　COD(mg·L-1)NH+4-N(mg·L-1)(NTU)SS(mg·L-1)℃pHDO(mg·L-1)331～58436.5～8150～200170～25020～306～92～57　　　20086263DOI:10.13205/j.hjgc.2008.03.0252　2.1　活性炭投加量的确定2.1.1　2,,PACPAC,PAC,、,PAC。,PAC,,,PAC,,PAC,[7]。2　PAC　2.1.2　0、12、24、36、48、60、72、84、96、108、120gPAC60L,30min,1h。PAC,,PAC,;,,PAC。PAC,,,PAC。,PAC1.4gL。2.2　对COD的去除效果,PAC-MBRCOD。,26℃、DO4.5mgL,COD88%。　　3,PAC-MBRCOD85.9%～90.5%,88.4%。,PAC-MBR。,,,,,。,COD,COD,22mgL,(CJ25.1-89)[8],COD88%。3　COD　2.3　对氨氮的去除效果,、pHDOPAC-MBRNH+4-N。,23℃,pH6～8,DO4.03mgL,NH+4-N97%。PAC-MBR(4),0.3～1.02mgL,96.4%～99.5%(98.1%),MBR6%,20%,PACMBR,PAC。1,,,。,(23℃),,99%。NH+4-N1mgL(),(CJ25.1-89)[8]。4　NH+4-N8　　　200862632.4　对浊度的去除效果PAC-MBR5。,,,,;,,,,1NTU,(CJ25.1-89)[8]。、MBRPAC-MBR,MBRPAC-MBR,。MBRPAC-MBR,,PACMBR。5　　2.5　SS与大肠菌群的去除效果(SS),。3　PAC-MBR,,,。、--,。;-0.5%HC11h,;-1%NaOH1h,。6,343%、81%、89%。,,。4　(1)MBRPAC、。(2)PAC-MBR,6　　COD131～214mgL、NH+4-N26.5～41mgL,25℃、DO5mgL、pH6～9,CODNH+4-N。(3)PAC-MBRCOD、NH+4-N88%、98%98%。COD、NH+4-N22mgL、1mgL1NTU,,(CJ25.1-89)。PAC-MBRMBR。(4),、-、-43%、81%89%。[1]　,,,.AO-MBR.,2006,22(7):101-104[2]　LiYZ,HeYL,LiuYH,etal.Comparisonofthefiltrationcharacteristicsbetweenbiologicalpowderedactivatedcarbonsludgeandactivatedsludgeinsubmergedmembranebioreactors.Desalination,2005,174:305-314[3]　,,,.PAC-MBR.,2005,25(6):55-58[4]　,,,.PAC-UF.,2005,31(3):56-60[5]　BaeTae-Hyun,TakTae-Moon.Interpretationoffoulingcharacteristicsofultrafiltrationmembranesduringthefiltrationofmembranebioreactormissedliquor.Mem.Sci.,2005,264:151-160[6]　,,,..,2007,33(5):37-40[7]　,,,.PAC-MBR.,2007,23(13):60-62[8]　CJ25.1-89　　　710048　5　411E-mail　[e-mail]2007-11-199　　　20086263POWDERACTIVATEDCARBON-MEMBRANEBIOREACTORFORTREATMENTOFMUNICIPALWASTEWATERPeiLiang　YaoBinghua(7)………………………………………………………………………………Abstract　Thecombinedprocessofpowderedactivatedcarbon(PAC)andmembranebioreactor(MBR)wasappliedfortreatmentofmunicipalwastewater.TheremovalefficienciesofCOD,NH+4-Nandturbidityinthecombinedprocesswereinvestigated.TheresultshowedthatthecombinedprocessmayachievebetterremovalefficienciesofCOD,NH+4-Nandturbidity,whenwatertemperatureisabove26℃,DOisabove4.5mgLandpHisbetween6and9.TheaverageremovalefficienciesofCOD,NH+4-Nandturbidityinthecombinedprocesswere88%,98%and98%respectively,andwasbetterthanthatofsingleMBRprocessandconventionalprocess.TheeffluentCODwaslessthan22mgLandNH+4-Nwaslessthan1mgL,turbiditywaslessthan1NTU.ItwasbetterthanthatofwaterfordomesticreusestatedbytheMinistyofConstruction(CJ25.1-89).Thefouledmembranewascleanedbywaterrinsing,water-acidrinsing,water-alkalirinsing,whichcanletitsfluxberestoredto43%,81%,89%ofanewmembranerespectively.Keywords　powderactivatedcarbon　membranebioreactor　domesticwastewaterINACTIVATIONOFMICROBEINRUNNINGWATERUSINGMICROWAVEELECTRODELESSULTRAVIOLETLIGHTLouChaogang　XiaDongsheng　ZhaoFanetal(10)………………………………………Abstract　E.coliandBacillussubtiliswereselectedtoexpressrespectivelytheeasilyanddifficultlyinactivatedmicrobe,andthebestirradiationtimeandthelimitturbidityofmicrowaveelectrodelessultraviolet(UV)irradiationwerestudied.Inthiscondition,checkingthedisinfectionofE.coliandBacillussubtilis,andcomparedwithmercurylampofmediumpressure.Theresultsshowedthatwhenbestirradiationtimewas210s,microwaveelectrodelessultravioletirradiationcanachieveinactivationrateof99.92%.Inordertoobtainthebestresultsofdisinfectioneffect,thewaterofturbiditywasbelow8NTU,thelimitturbidityofdisinfectionwas40NTU;microwaveelectrodelessultravioletirradiationcanachieveinactivationrateof100%with180s,andtheBacillussubtilisinactivationrateof100%with300s,itismoreeffectivethanmercurylampofmediumpressuredisinfection.Keywords　E.coli　Bacillussubtilis　limitturbidity　drinkingwater　disinfectionefficiency　electrodelessUVlampSTUDYONTHEBULKINGSLUDGEINTHEPROCESSOFSHORTRANGENITRIFICATIONOFHIGHAMMONIAWASTEWATERHouQiaoling　WenYibo　LiLinbaoetal(13)………………………………Abstract　AOtechniquewasusedtotreatsimulatedhighammoniawastewater,thestabilityshort-cutnitrificationcouldbeimplementedbycontrollingtherightcontent(accumulationrate≥80%),theactivatedsludgehadgoodsettlingproperty,inthelateoftheshort-rangenitrificationitwasdegradedgradually.ItisshowedbytheexperimentalresultsthatincreasingNPratiointhewastewatercanslightlydropSVI,butstillcannoteffectivelyeasethesludgebulking.ThebulkingsludgewouldbeoccurredwhenCODloadwasabove0.27kg(kg·d).ControlledDOwith1.5to2.0mgL,thesolid-liquidseparationresultisgood,andtheremovalratesofNH+4-NandCOD,aswellasthecumulativerateofnitritenitrogenaregreaterthan90%,sludgebulkingcan