城市污水处理过程中不同形态氮类营养物的转化特性

99环境工程学报Vol．9No．920159ChineseJournalofEnvironmentalEngineeringSep．2015710055A/A/O。39.28mg/L41.24mg/L93.2%36.61mg/L2.67mg/L。96.58%39.83mg/L。45%。。/。X703A1673-9108201509-4193-06TransformationcharacteristicsofdifferentformsofnitrogennutrientsinprocessofwastewatertreatmentJinPengkangSongLiRenWuangSchoolofEnvironmental＆MunicipalEngineeringXi’anUniversityofArchitecture＆TechnologyXi’an710055ChinaAbstractTheaimofthisstudywastoinvestigatethetransformationprocessofdifferentformsofnitrogennutrientsbyfiledmeasurementandsimulatetestinthewholecitysewagetreatmentA/A/Osystem.Thestudyshowedthatinfluentdissolvednitrogenandparticulatenitrogenproportionwerealmostthesameconcentrationsof39.28mg/Land41.24mg/Lrespectively．Dissolvednitrogenwasmainlycomposedofdissolvedinorganicnitrogenwhichportionconstituted93.2%36.61mg/Lbutdissolvedorganicnitrogenconcentrationwasverylow2.67mg/L.Theparticulateorganicnitrogenportionconstituted96.26%oftheparticulatenitrogen．Dis-solvednitrogenchangeswasverysmallintheprocessofthewholeprimarytreatmentbutparticulateorganicni-trogendecreased45%．Particulateorganicnitrogenwasremovedduetoprecipitationwhichresultedinlowerto-talnitrogen．Filedmeasurementandsimulatetestshowedthatdissolvedorganicnitrogenwassignificantlyre-ducedbyanaerobicmicrobialdegradationintheanaerobicandanoxiccompartmentsofthesecondarytreatmentwhereasaslightlyincreaseofdissolvedorganicnitrogenconcentrationswasobservedintheaerobiccompartment．Secondaryeffluentnitrogenmainlycomposedofinorganicnitrogenthroughthefurtheroptimizationofprocesspa-rameterswecanenhancesystemnitrification/denitrificationtoremovetheresidueofinorganicnitrogeninthewastewater．Keywordsnitrogennutrientsurbansewagetreatmentsystemtransformationprocess511783762011ZX07302-001CX121602014－09－292014－11－281974—。[e-mail]2NH3-N、NO3-NNO2-N。AAO、、SBR/9N21。234-6。、。A/A/OTN。11.1A/A/O20t8.0m16.5h2h5.5h9h。1。。1Fig.1Sewagetreatmentplantprocessesandsamplingpoints2particulatenitrogenPNdissolvednitrogenDN0.45μm。dissolve-dorganicnitrogenDONdissolvedinorganicnitrogenDINparticulateorganicnitrogenPONadsorptionofni-trogenAN。500mLTN1SS100mL0.45μm。TN2TINNH+4-N、NO－3-NNO－2-N。100mL25℃、200r/min2h5000r/min5min7100mL0.45μmTN3、NH+4-N、NO－3-NNO－2-NAN。2Fig.2DifferenttypesofnitrogencomponentdiagramPN=TN1－TN2DN=TN2AN=TN3PON=PN－ANDON=TN2－TINTN、NH+4-N、NO－3-NNO－2-NTU-1901《》449149。PONAN。50℃0.2g2。150mL100mL25℃、200r/min2h5000r/min5min100mL0.45μmTN、NH+4-N、NO－3-NNO－2-N。ANDON=TN－NH+4-N－NO－3-N－NO－2-N。250mLKN。PON=KN－NH+4-N－DON。1.23。MLSS4000～5000mg/L。3Fig.3Reactorreactiontimeandsamplingtime32h5.5h9h。2h10mg/LKNO32mg/LA/A/O。30.45μmTN、NH+4-N、NO－3-NNO－2-N。22.12.1.1污水中氮组分分布180.52±1.4mg/LPNDN41.24mg/L39.28mg/L51.24%48.78%。1DINDN93.2%36.61mg/L。DNDON2.67mg/L。PNPON96.58%3.42%AN。ANDONAN53.19%27.66%AN。73．43mg/LPNDN35．04mg/L38．39mg/L47．72%52．28%。2DNPN6．2mg/LAN。60．46mg/LPNDNPONDIN90%。PON+DON24．3mg/L40．19%PONTON90．16%3。Czer-wionka88BNRTON15．5～35mg/L24%～45%PON50%78%。2.1.2沉淀泥中氮组分分布PONANANDON、、。TN12．66mg/g39．1mg/g。1Table1Differenttypesofnitrogennutrientdistributioninrawsewagemg/L%2．676．835．640．940．0390．732．390．0839．8396．580．390．240．750．030．940．581．820．08591492Table2Differenttypesofnitrogennutrientdistributioninaeratedgritchambermg/L%2．456．3834．871．050．0290．832．730．0633．7496．290．540．190．560．011．540．541．60．033Table3Differenttypesofnitrogennutrientdistributioninprimarysettlingtankmg/L%2．396．3833．81．270．0290．183．380．0621．9195．34—0．530．530．01—2．302．300．06PONPON94.31%11.94mg/g70.69%31.16mg/g。ANDON20%4。1、23AN。4Table4Differenttypesofnitrogennutrientdistributioninprecipitationmudmg/g%11．9494．310．22—0．5—1．74—3．95—31．1670．693．611．412．890．039．233．617．390．082.2TN4。7.09mg/L12.96mg/LPN6.2mg/L12.06mg/LDON。4Fig.4Nitrogenfractionsinprimarytreatment5TN12.66mgN/g6.51mgN/L△TN×△SS/100012.51mgN/L。47.09mg/L12.96mg/LTNPON。Sattayatewa．9Mulholland10PON、、PON50%DON。5Table5NitrogenbalanceanalysisintheprimarytreatmentSSmg/L1186672514TNmgN/L80.5273.437.09TNmgN/L——6.51SSmg/L672352320TNmgN/L73.4360.4612.96TNmgN/L——12.51TN。2.352.46mg/LDON69149DON1.02mg/L1.25mg/LDON1.88mg/L。Makinia112BNR。、SRTpH12。5DONFig.5DONconcentrationschangesinthesecondarytreatmentDONDON6。DON1314DON。DON1231516。DON。65%DON1.94±0.26mg/L15%～20%、6//3Fig.6Changesofnitrogencompoundsinanaerobic/anoxic/aerobiccompartments。31DNPNPNDN41.24mg/L39.28mg/L。DINDNDON2.67mg/LPNPON96.58%39.83mg/L。2DNPON17.92mg/L45%。3DON。4DONDONSMP、。5TNNH3-N+NO3-N。、。1．．201432728-3179149WangJuantingYuYanzhen．Researchprogressofnitrogenandphosphorusremovalinmunicipalsewage．ChinaRe-sourcesComprehensiveUtilization201432728-31inChinese2．．2007275712-716MengWei．Thestrategyofcomprehensivepollutionpreven-tionandcureofwaterenvironmentinChinesewatershed．ChinaEnvironmentalScience2007275712-716inChinese3．．2013329-30YuLinkang．TNindicatorsexploretheimportanceofwastewatertreatment．StraitsScience2013329-30inChinese4．．201412310-12ZhouYongliZuoJiaolanLiYijunetal．Researchad-vancesofnitrogenremovalbybiotechnologyinwastewatertreatment．ExperimentScienceandTechnology201412310-12inChinese5．．2011369108-112WangZebinMaYunMaQiang．Advanceandtrendofbiologicaln