WFSI处理低CN比养猪废水的效果及脱氮机制邓凯文

2016,36(1)87~91ChinaEnvironmentalScienceWFSIC/N,*,(,,150090)C/N,(WFSI),(COD)(NH4+N)(TN).,CODNH4+NTN160359253298317374mg/L,(25±1)0.2m3/m2·d,30d,CODNH4+NTN61.7%85%36.3%.,WFSI,42.3%.C/NX703.1A10006923(2016)01008705Efficiencyanddenitrificationmechanisminawood-chip-frameworksoilinfiltratortreatingpiggerywastewaterwithlowC/Nratio.DENGKai-wen,LIJian-zheng*,ZHAOBo-wei(StateKeyLaboratoryofUrbanWaterResourceandEnvironment,HarbinInstituteofTechnology,Harbin150090,China).ChinaEnvironmentalScience,2016,36(1)87~91AbstractInordertotreatpiggerywastewaterwithhighammoniumdensityandlowC/Nratio,awood-chip-frameworksoilinfiltrator(WFSI)wasconstructedanditsperformanceinCOD,NH4+NandTNremovalwasinvestigated,whilethemechanismfordenitrificationwasanalyzed.Theinfiltratorwasstartedupatahydraulicsurfaceloadingrateof0.2m3/m2·dandtemperature(25±1),andcouldgetsteadyinperformancewithin30days.TheresultsshowedthatCOD,NH4+NandTNremovalintheinfiltratorwereabout61.7%,85.0%and36.3%,respectively,asagainstafeedconcentrationwhichranged160~359,253~298and317~374mg/L,respectively.HeterotrophicdenitrificationandANAMMOXwereidentifiedasthedenitrificationapproachesintheWFSI,andthecontributionofANAMMOXtotheTNremovalwasmorethan42.3%.TheCOD,NH4+NandTNremovalintheinfiltratorwereabout61.7%,85.0%and36.3%,respectively,asagainstarangedfeedconcentrationof160~359,253~298and317~374mg/L,respectively.KeywordspiggerywastewaterammoniumlowC/Nratiosoilinfiltratordenitrification,,[13].,(NH4+N),NH4+N470mg/L[45].,[67].,,,,[C/N,C(COD),N(TN)]4[6].,CANON,SharonANAMMOX,,,C/N,,[7].C/N,20150521(2013ZX0720100700203);(GC13C303)*,,[e-mail]8836,.,[8].,,(WFSI),,C/N,.11.1.,,1.CODNH4+N210268.5mg/L,COD/TN0.64,C/N.1Table1QualityofthewastewaterpH8.48.98.0NH4+N(mg/L)268.5342.1180.3NO2N(mg/L)0.20.60NO3N(mg/L)0.11.20COD(mg/L)21036396COD/TN0.641.610.331.21WFSI.,,Φ15cm,1.5m,21.1L.0.6L,.5cm110cm5cm.,Φ5~8mm,1.5~2.5×1~1.5×0.2~0.4cm.,1:3.3~5×2~3×0.2~0.4cm,200.-1Fig.1Schematicdiagramofexperimentalequipment1.31,,.WFSI0.2m3/(m2·d),3.5L/d,(25±1).1.4WFSI,.CODNH4+N(NO2N)(NO3N)pH1,[9].,COD,NH4+NNO2NNO3N,pHpH(DELTA320,MettlerToledo).TNmultiN/C2100s(Analytikjena,).22.1CODCOD,[10].2,80d,WFSICOD.(4d),,,COD[11].,COD,9~15d66mg/L,62.7%,1WFSIC/N89[12].16d,COD,18d,18~24d,COD,.,,COD[13].25d,COD,30d61.7%,84mg/L.49~63d,,,COD.020406080050100150200250300350400450COD(mg/L)(d)020406080100(%)2WFSICODFig.2CODandCODremovalintheWFSI2.2NH4+NNH4+N,,[14].3,COD30d(2),NH4+N.30~48d,NH4+N241.413.6mg/L,94.0%.49d,NH4+N,74~80d,85.0%.NH4+N,,[1517].80d,WFSINH4+N268.5mg/L(3),NO2NNO3N,1.2mg/L(4).4,15d,NO2NNO3N,,.16d,NO2N,19d66.1mg/L,25~48d1.1mg/L.NO3NNO2N3d,18d,25d.NH4+N39~50d(3),209.8mg/L,NO3N145.1mg/L(4).,NO3N,145.3mg/L.020406080050100150200250300350NH4+-N(mg/L)(d)020406080100(%)3WFSINH4+NFig.3NH4+NandNH4+NremovalintheWFSI,16d,NH4+N14~24dNO2N.NO2N,NO3N,NO2N,NH4+N.,.25d,NO2N,NO3N.NH4+NNOxN,pH,6.1(4).WFSI,NOxN,pH7.8.9036NO3N,[14,25].020406080050100150200250NOx-N(mg/L)(d)0246810pHpHpH4WFSINOxNpHFig.4NOxNandpHintheWFSI5,80d,WFSITN336.0mg/L.NH4+N(1),,TN15dNH4+N(3).16d,(4),NH4+N(3),NO3N(4).21~38d,TN,45.3%.,TN39d.,TN60d,36.3%,.,TN215.7mg/L.2.34,[1820].80d,WFSIpH7.0~8.5(4),NH4+,(25±1),[25].WFSI,NH4+NTN(3,5).,,NH4+NTN[21].NH4+NNO2NNO3NpH,WFSI.WFSI8d(73~80d),.020406080050100150200250300350400450TN(mg/L)(d)020406080100(%)5WFSITNFig.5TNandTNremovalintheWFSI()(),(1)(2)[22].3C+2H2O+4NO22N2+4OH+3CO2(1)5C+2H2O+4NO32N2+4OH+5CO2(2)(1)(2),1mgNO3N2.86mgCOD,1mgNO2N1.71mgCOD.,,,N2ON2,(3)[23].NH4++1.32NO2+0.066HCO3+0.13H+1.02N2+0.26NO3+0.066CH2O0.5N0.15+2.03H2O(3)1,WFSIC/N0.64,1.61,.8d(73~80d),,.CODNH4+NNO2NNO3N,WFSICOD1WFSIC/N91TN0.481g/d0.487g/d.[24],8dNO2N,COD,(1),0.281g/d,0.206g/d,42.3%.(2),0.281g/d,0.206g/d.,,[25].,WFSIC/N,.3.0.2m3/(m2·d)(25±1)C/N61.7%COD85%NH4+N,,TN36.3%.,,.[1]GhafariS,HasanM,ArouaMK.Bioelectrochemicalremovalofnitratefromwaterandwastewater—areview[J].BioresourceTechnology,2008,99(10):39653974.[2],,,.//SBR[J].,2013,33(11):19841992.[3],,,.[J].,2013,33(10):17711778.[4],,,.SBR[J].,2014,(8):2733.[5],,,.[J].,2012,(6):318320.[6],,,.[J].,2014,34(9):22592265.[7],,,.ANAMMOX[J].,2013,33(1):5662.[8],,,.[J].,2013,33(7):19261931.[9].[M].4.:,2006.[10],,,.[J].(),2011,(05):569575,582.[11],,,.[J].,2015,(6):22482255.[12],,,.2[J].,2014,(12):53055310.[13],,.COD[J].,2008,(6):3941,44,34.[14],,,.[J].,2013,(11):42144218.[15],,.[J].,2013,33(9):23592368.[16]OkanoY,HristovaKR,LeuteneggerCM,etal.ApplicationofrealtimePCRtostudyeffectsofammoniumonpopulationsizeofammoniaoxidizingbacteriainsoil[J].AppliedandEnvironmentalMicrobiology,2004,70(2):10081016.[17]EnwallK,NybergK,BertilssonS,etal.Longtermimpactoffertilizationonactivityandcompositionofbacterialcommunitiesandmetabolicguildsinagriculturalsoil[J].SoilBiologyandBiochemistry,2007,39(1):106115.[18]OvedT,ShavivA,GoldrathT,etal.Influenceofeffluentirrigationoncommunitycompositionandfunctionofammoniaoxidizingbacteriainsoil[J].AppliedandEnvironmentalMicrobiology,2001,67(8):34263433.[19]NakhlaG,FarooqS.Simultaneousnitrification–denitrificationinslowsandfilters[J].Journalofhazardousmaterials,2003,96(2):291303.[20],,,.