城市工业废水亚硝化生物脱氮试验研究余存和

237009DO。DO1．0mg/L82．1%95%。X703．1A0517－6611201121－12818－03ExperimentalStudyofNitrosationBiologicalNitrogenRemovalinCityIndustrialWastewaterYUCun-heLu'anCityDrainageCo．Ltd．Lu'anAnhui237009AbstractNitriteaccumulationwasstudiedundertheconditionoflowdissolvedoxygenDOduringthebiologicalnitrogenremovaltreatmentofindustrialwastewaterwithlowC/Nratio．Asindicatedbytheexperimentalresultsthesystemcouldrealizestableandlastingnitriteaccu-mulationwithhighammoniaremovalefficiencyatDO=1．0mg/Landthesystemachievedanaveragenitriteaccumulationratioat82．1%andammoniaremovalrateofover95%．KeywordsIndustrialwastewaterBiologicalnitr[e-mail]。2011-04-14、、C/N。C/N1－2。A/DAT-IATDissolvedOxygenDODATNO－2-NA/DAT-IAT。11．1A/DAT-IAT1320mm×120mm×270mm××8．4LⅠA、ⅡDAT、ⅢIAT2∶3∶3。、DATIAT、。28～32℃8．4L/d2800～3500mg/L15dDAT150%～250%IAT200%。DATIATDO。IAT4h2h1h1h。1．2A/DAT-IATA/DAT-IATDAT-IATDemandAerationTank-IntermittentAerationTankSBR3。ADAT。DAT。IATSBR、、4。IATDAT。A/DAT-IATA/OSBR123456789。Note1．Influentpump2．Stirrer3．Microporousaerator4．Automaticcontroldevice5．Airpump6．Nitrosationliquidrefluxpump7．Sludgerefluxpump8．Drainvalve9．Effluentpump．1A/DAT-IATFig．1A/DAT-IATexperimentalinstallationA/DAT-IATA/O。IATSBR、4。1．320101。1Table1RawwaterqualityindexSamplingtimeNH+4-Nmg/LCODmg/LCl－mg/LSSmg/LpH5May20800285726753547．357July19600319639423957．448August21900321629774067．211、。JournalofAnhuiAgri．Sci．2011392112818－12820DOI:10.13989/j.cnki.0517-6611.2011.21.069。pH7～8C/N2．5～3．5。1．4NH+4-N、NO－2-N、NO－3-NCOD、MLSS5pHHI98107pHDOORION835A。1．5、DO3。DATAmmoniaNitrogenVolumeLoadingRateNLR。DODATNLRDODODO。DOA/DAT-IAT。22．1。DATIATDATIAT。NH+4-NCOD40～120mg/L300～500mg/LNH+4-NCOD。2。。DATNLR183gNH+4-N/m3·d640gNH+4-N/m3·d。280mgNH+4-N/L20mgNH+4-N/L。DO3mg/L。2．2DO。DODAT7DO2．5、1．8、1．5、1．2、1．0、0．80．5mg/L2。2DODATTable2ChangesofammonianitrogenremovalefficiencyandDATni-trosationefficiencyatdifferentDOconcentrationsDODOconcentrationmg/LAmmonianitrogenremovalefficiency∥%Nitrosationefficiency∥%2．592．401．891．823．91．592．667．41．290．171．81．088．384．70．873．579．10．553．729．92DODAT。DO1．2mg/L90．1%71.8%DO1．0mg/L88．3%DO1．2mg/L84．7%。DO1．0mg/L。2．3DODO。2DO1．0mg/L、DAT、。220mgNH+4-N/LDAT160～220mgNO－2-N/L。119、152DAT。1/31/2DAT。A/DAT-IAT。2、DAT、Fig．2Changesoftheammonianitrogenconcentrationofinflu-entandeffluenttheDATnitritenitrogenandnitrateni-trogenconcentration3DO1．0mg/L3DATFig．3ChangesofammonianitrogenremovalefficiencyandDATnitrosationefficiencyDAT。280．1mgNH+4-N/L12．3mgNH+4-N/L95%DAT75%82．1%。DO918213921。DO。3DODO1．0mg/LA/DAT-IAT。280．1mgNH+4-N/L12.3mgNH+4-N/L95%。DODAT82．1%。1．J．2010426864－868．2．J．200632626－27．3．DAT-IATM．2003．4．A/DAT-IATJ．200512138－41．5．M．4．2002．6．TTPCJ．20111223－228．7．EMJ．20074111－113．8．J．20083檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪219－222．1277735CdEi5Ei320。HgEi124．407CrEi54．78CrEi40．986Pb、As。5Cd＞Hg＞Cr＞Pb＞As。RIRI600。5CdEi566．4、、、4Ei320、、Ei160。4HgEi89．6。RI、、RI6005。Cd＞Hg＞Cr＞Pb＞As。31As、Hg、Cr、PbCd1．36、1．61、147．46、10．06。Cd＞Cr＞Pb＞Hg＞As。2As、Hg、Pb、、、、、、HgPb、、、Cd、、、Cr、、、Cd、、、4Cr。35Cd＞Hg＞Cr＞Pb＞As。RIRI600。RI、、RI6005。Cd＞Hg＞Cr＞Pb＞As。1．I．C－B－TTriadJ．1999192120－126．2RAMAMOORTHYSRUSEBR．Heavymetalexchangeprocessesinsedi-mentEmDashwatersystemsJ．EnvitonmentalGeology197823165－172．3SALOMONSWROOIJDKERDIJKNMetal．SedimentasasourceforcontaminantsJ．Hydrobiologia19871330－384．J．2005291043－45．5．M1987．6CHAPMANPMMANNGS．SedimentqualityvaluesSQVsandecologi-calriskassessmentERAJ．MarinePollutionBelletin1999385339－344．7LONGERFIELDLJMACDONALDDD．PredictingtoxicityinnlarinesedimentswithnumericalsedimentqualityguidelinesJ．Environ-mentalToxicologyandChemistry1998174714－727．8BUEHMANMF．NOAAscreeningquickreferencetablesNOAAhazardousmaterialsreportno．99－1R．SeattleWACoastalProtectionandResto-rationDivisionNationalOceanicandAtmos－phericAdministration19999－12．9HAKANSONL．AnecologicalriskindexforaquaticpollutioncontrolasedimentologiealapproachJ．WaterResearch198014975－1001．10SHAHIDMGHAZALAS．SULTANAetal．Determinationoforganochlo-rineandnitrogencontainingpesticideresiduesinwatersedimentsandfishsamplesbyreversephasehighperformanceliquidchromatographJ．AgriculturalScience＆Technology20091059－12．11．J．200930168－69．12WANGMLAIYPZHOUWBetal．VerticaldistributioncharacteristicofnitrogeninthecoresedimentsofThreeRiversestuaryinPoyangLakeJ．AgriculturalScience＆Technology2010112155－158．13．J．2009301144－145．14SUNYQQIANHDUANLetal．EffectsoflandusepatternsonsoilheavymetalcontentsJ．AgriculturalScience＆Technology2010111159－162．15．J．200930248－49．028212011