贝壳与球形塑料填料曝气生物滤池的硝化特性比较熊小京

44　4厦门大学学报(自然科学版)Vo.l44　No.4　20057JournalofXiamenUniversity(NaturalScience)Ju.l2005　　　:2004-07-05:(D0210004):(1963-),,,[e-mail]熊小京,叶志隆(,316005):,.,CaCO3,,,.pH,...:;;pH;:X703.1　　　　　:A　　　　　:0438-0479(2005)04-0538-04　　,.、,.,NH4+-NNO2--N,NO3--N.:1gNH4+-N7.14g(CaCO3)[1].,NaH-CO3NaOH[2,3],.,,.,,,,[4];,[5,6],pH[7].,,,[8].,CaCO3[9],,,.,CaCO3,、pH,,.1　1.1　　1　　Fig.1　Experimentalapparatusandflow-sheet1.ABPVC,1m,75mm.A0.5m(81.0%);B0.5m5mm.,,.,.pH5.3～6.6;HRT,,8.3h.1.2　130mg/L,44mg/L,75mg/L,50mg/L,pH.1.3　().、pH().,1.1　Tab.1　ParametersatdifferentexperimentalrunspHNH4+-N/mgL-1/gm3d-115.3～5.71532.625.3～5.73065.235.3～5.760130.446.4～6.660130.4　　.,10%,,.1.4　pHDOpHB-4pHORIONmodel810;COD;(HP8453).　　2　AB　　Fig.2　ComparisonoftransientbehaviorofNH4+-NremovalatdifferentNH4+-NconcentrationofinfluentbetweenAandBcolumn2　2.1　2pH5.3～5.7,15、30、60mg/LAB.10d,10%,.2,1530、60mg/L,A0.59、0.5221.6mg/L,96.3、98.5263.6%;B10.0、21.651.9mg/L,28.4、29.713.3%.,1530mg/L,,60mg/L,.B15～60mg/L,A1/4～1/3.CaCO3,,.B,,,.2.2　pH3pH5.3～5.7,15、30、60mg/LABpH.5394　　　　　　　　　　　:　3　ABpH　Fig.3　ComparisonoftransientbehaviorofpHvalueatdifferentNH4+-NconcentrationofinfluentbetweenAandBcolumn3,,,B,,pH6,60mg/L,pH5,pH[10],;A,,H+,,pH7,60mg/L,pH6.5,.,pH,.2.3　pH　4　pH　Fig.4　ComparisonofpHvalueinaxialdistributionwithAandBcolumn4pH5.5、60mg/LABpH.BpH,4.7.,,H+,pH.ApHB,0.5mpH,BpH,0.8mpH5.976.62.,0.8m,CaCO3;0.8m,,,,CaCO3pH.2.4　pH560mg/LpH5.3～5.76.4～6.6AB.　5　pHA、B　Fig.5　ComparisonofnitrificationefficiencyatdifferentpHvaluebetweenAandBcolumnpH5.3～5.7B,9.0%;A61.6%.NaHCO3pH6.4～6.6,AB83.331.5%,pH5.3～5.721.722.5%,,A540()　　　　　　　　　　　　　　　　　　2005B.3　　1)CaCO3,,.,,,.2)pH,.3).4)pH,.:[1]　.[J].,1994,2(3):44-49.[2]　,.SBR[J].,1995,23(1):44-49.[3]　RuizaG,JeisonbD,ChamyaR.Nitrifcationwithhighnitriteaccumulationforthetreatmentofwastewaterwithhigham-moniaconcentration[J].WaterResearch,2003,37:1371-1377.[4]　,.[J].,2002,20(3):7-13.[5]　LazarovaV,NogueiraR,ManemJ,eta.lInfluenceofdis-solvedoxygenonnitrificationkineticsinacirculatingbedreactor[J].Wa.tSc.iTech.,1998,37(4-5):189-193.[6]　PicioreanuC,VanLoosdrechtMCM,HeijnenJJ.Modellingtheeffectofoxygenconcentrationonnitriteaccumulationinabiofilmairliftsuspensionreactor[J].Wat,Sc.iTech.,1997,36(1):147-156.[7]　DeBoerW,KowalchukGA.Nitrificationinacidsoils:mi-cro-organismsandmechanisms[J].SoilBiologyandBio-chemistry,2001,33:853-866.[8]　.[J].,2002,8:29-30.[9]　.[J].,2001,10:22-23.[10]　AnthonisenAC,LoehrRC,PrakasamTBS,eta.lInhibi-tionofnitrificationbyammoniaandnitrousacid[J].WPCF,1976,48(5):835-852.ComparisonofNitrificationBehaviorBetweenShellandPlasticsBallCarrierinAeratedBiofilterXIONGXiao-jing,YEZhi-long(EnvironmentalScienceResearchCenter,XiamenUniversity,Xiamen361005,China)Abstract:MostofstudiesonbiologicalammoniatreatmenthavebeencarriedoutsofarundertheconditionofpHhigherthan7byaddingNaOHorNa2CO3tosupplythesufficientalkalinity.Shell,asfisheryproductwaste,containslargeamountofCaCO3.Inthepresentwork,twoaeratedbio-filterspackedwiththebiomasscarrierofshellandplasticsballrespectivelywereevaluatedsimultaneously,andthetransientbe-haviorofnitrificationefficiencywerecomparedunderthedifferentinfluentpHvaluesandammonialoading.Theresultsdemonstratedthatthebio-filterpackedwithshellpresentedhigherammoniaremovalefficiencythanthatwithplasticsballbysupplyingalkalinitytoraisethepHvalue.Inshellpackingbio-filter,thenitrificationactivityofnitrifyingbacteriawaslesstobeinhibitedeventhoughpHvalueininfluentwasatrelativelylowlevel,indicatingthatshellcouldsupplyalkalinitysufficientlybydissolvingCaCO3atlowpHcondition.Bycontract,inplasticsballpackingbio-filter,thenitrificationactivitywasinhibitedseverelyduetothelackofalkalinitysupplyatlowinfluentpHvalue,resultinginagraduallydecreaseinnitrificationefficiencyasammoniaconcentrationincreasedininfluen.tConsequently,shellappearsmoresuperiortotraditionalplasticsballwhenusingasbiomasscarrierinaeratedbio-filterforammoniaremovalatlowpHvalueandhighammonialoadingininfluen.tKeywords:shell;plasticsball;lowpHvalue;nitrification5414　　　　　　　　　　　: