粉末活性炭回流技术去除原水中氨氮的研究周琦

　Vol.37　No.2　201127　　　周　琦1,2　陈　卫1,2　陶　辉1,2(1,　210098;2,　210098)　　　将含粉末活性炭(PAC)的沉淀池排泥水回流至原水进水处,延长PAC在系统中的停留时间,考察系统对氨氮、有机物和浊度的去除效果及去除氨氮的影响因素。结果表明,在温度为21～25℃,投炭量为50mg/L条件下,系统第7～8天运行稳定,对氨氮、UV254和CODMn的去除率分别为40%、45%和60%左右,出水浊度在1NTU左右,活性炭泥的生物量为130nmolP/g左右。当活性炭泥回流比为6%,原水CODMn不超过10mg/L,pH为7～8,浊度不超过180NTU时,对氨氮去除效果最好,为40%～50%,可应对原水氨氮浓度小于1mg/L的情况。　粉末活性炭　回流　氨氮StudyonpowderedactivatedcarbonbackflowtechnologyinammonianitrogenremovalfromrawwaterZhouQi1,2,ChenWei1,2,TaoHui1,2(1.CollegeofEnvironmentalScience,HohaiUniversity,Nanjing210098,China;2.InstitutionofModernWaterTreatmentResearchAcademy,HohaiUniversity,Nanjing210098,China)Abstract:Inthispaper,thestudyonbackflowofsludgedispersingwastewatercontainingpowderedactivatedcarbon(PAC)fromsedimentationtanktorawwaterentrancetoprolongtheretentiontimeofPACinsystemhadbeencarriedouttoinvestigatetheinfluencefactorsonammonianitrogen,organicmatter,andturbidityremovalinsystem.Theresultsshowed:whenthetemperaturewasbetween21℃and25℃andthePACdosageof50mg/L,thesystemoperationinthe7thand8thdayswasstableandtheremovalofammonianitrogen,UV254,andCODMnwereabout40%,45%,and60%respectively,theeffluentturbiditywasabout1NTU,andthebiomassinPACsludgewasabout130nmolP/g.WhentherefluxratioofPACsludgewas6%,rawwaterCODMnwaslessthan10mg/L,pHwasbetween7and8,andtheturbiditywaslessthan180NTU,theammonianitrogenremovaleffectwasbest,whichwasbetween40%and50%andcouldtreattherawwaterwithammonianitrogenlessthan1mg/L.Keywords:Powderedactivatedcarbon;Backflow;Ammonianitrogen　　2008,127t[1],。《》(GB5749—2006),0.5mg/L,,10%。。,,、、、—[2],。,,、、,、,。(PAC)DOI:10.13789/j.cnki.wwe1964.2011.02.01328　　　　Vol.37　No.2　2011,CODMn、、[3]。PAC[4],,,[5]。PAC,PAC,PAC,、。1　。,50mg/LPAC,500r/min30s,;,500r/min30s,250r/min2min,100r/min5min,50r/min10min,40min。,,PAC(),,,,PAC50mg/L,,4。、CODMn、UV254、;。,(Al2O310%),,10～15mg/L。1。1　/℃/NTUCODMn/mg/LUV254/cm-1TOC/mg/L/mg/LpH21～2541.7～160.02.56～3.230.042～0.0582.81～3.890.29～0.717.78～8.09　　Hach2100N;UV254;CODMn;NH3—N;[6]。2　2.1　2.1.1　1　1。1,7,740%,,。,。,,,。,,10h,。7,,,,。2,,。　2　2.1.2　3。3:(1)UV254。　Vol.37　No.2　201129　　　3　UV254,,460%640%,845%。,、。UV254,。,UV254,,,,。,UV254。,,,PAC,,,,。(2)CODMn。CODMn,,4,,860%。,CODMn,,。UV254CODMn。,CODMn,。,,CODMn。4,、。,,。8PAC,、,。(3)2,UV254CODMn,2,。2.1.3　4。4,,1NTU。,。,,、,。,,,,。4　2.1.4　,。,、,,(nmolP/g),1nmol108。,130nmolP/g。2.2　,,50mg/L。。5。30　　　　Vol.37　No.2　20115　5,6%,,40%。,;,,。,,6%。2.3　1g/L,。6。6　6,≤3mg/L,,;3mg/L,,1mg/L,。1mg/L,,,,,,,,。1～3mg/L,,,,。[7],,,,。,,。3mg/L,,。,1mg/L。2.4　1g/L,。7。7　7,CODMn10mg/L,,40%。,,,,,。,,。,。CODMn10mg/L,。2.5　pHHClNaOH,pH。pH8。8　pH　Vol.37　No.2　201131　　　8,pH7～8,,pH,。pH,pH。,pH7～8.5,,,。2.6　,。9。9　9,,,,。3　(1)21～25℃,50mg/L,,,7～8,、UV254CODMn40%、45%60%,1NTU,130nmolP/g。(2)6%,,40%。(3)1mg/L。(4)CODMn10mg/L,,40%。(5)pH7～8,,pH,。(6),,180NTU,。参考文献1　.2008.,2009.10～272　YuX,QiZH,ZhangXJ,etal.Nitrogenlossandoxygenparadoxinfull-scalebiofiltrationfordrinkingwatertreatment.WaterResearch,2007,41(7):1455～14643　MatsuiY,FukudaY,InoueT,etal.Effectofnaturalorganicmatteronpowderedactivatedcarbonadsorptionoftracecontaminants:characteristicsandmechanismofcompetitiveadsorption.WaterResearch,2003,37(18):4413～44244　,..:,19995　KimaHS,KatayamabH,TakizawabS,etal.Developmentofamicrofilterseparationsystemcoupledwithahighdoseofpowderedactivatedcarbonforadvancedwatertreatment.Desalination,2005,186(1-3):215～2266　FindlayRH,KingGM,WatlingL.Efficacyofphospholipidanalysisindeterminingmicrobialbiomassinsediments.AppliedandEnvironmentalMircrobilogy,1989,55(11):2888～28937　LingJ,ChenSL.Impactoforganiccarbononnitrificationperformanceofdifferentbiofilters.AquaculturalEngineering,2005,33(2):150～162　　★:2100981　113:13915954206E-mail:[e-mail]:2010-08-30:2010-10-12无锡市江阴澄西水厂建设工程::,,6,10m3/d3(2190m3/h、12m、110kW),21。。10m3/d,()10m3/d,()20m3/d,。:1DN1400,6km。:、、、、、。、、、。:3.1302:2010～2011(通讯员　武云甫　任晓艳)