NaCl对好氧颗粒污泥短程硝化反硝化的影响张彦灼

28520155ＲesearchofEnvironmentalSciencesVol．28No．5May2015．NaClJ．2015285823-830．ZHANGYanzhuoLIJunCHENGuanghuietal．EffectsofNaClconcentrationonpartialnitrificationanddenitrificationbyaerobicgranularsludgeJ．ＲesearchofEnvironmentalSciences2015285823-83[e-mail]．*[e-mail]*100124SBＲρNaCl、、ρCODCr、ρNH4+-NAGS．pH、ρDO8.0、30℃3mgLρNaCl、、ρCODCrρNH4+-N20gL、8h、600mgL70mgLηANH4+-NNAＲNO2－-N．ρNaCl10gLNOBAOB．ρCODCrNAＲ．116dAGS50gLηA50%AOBAGS．AGSSND24.2%SNDV0.63h－1ρDOρDOSND．ρDONH4+-NNO2－-NX7031001-6929201505-0823-08ADOI10.13198j．issn．1001-6929．2015．05．22EffectsofNaClConcentrationonPartialNitrificationandDenitrificationbyAerobicGranularSludgeZHANGYanzhuoLIJun*CHENGuanghuiBIANWeiLIYunWANGChangwenKeyLaboratoryofBeijingforWaterQualityScience＆WaterEnvironmentＲecoveryEngineeringCollegeofArchitectureandCivilEngineeringBeijingUniversityofTechnologyBeijing100124ChinaAbstractTheeffectsoffourfactorsincludingNaClconcentrationaerationtimechemicaloxygendemandCODCrandinfluentNH4+-NconcentrationonpartialnitrificationanddenitrificationbyaerobicgranularsludgeAGSwereinvestigatedusingasequencingbatchreactorSBＲ．Theresultsshowedthatwhenthefivefactorswere20gL8h600mgLand70mgLrespectivelythenitriteaccumulationrateNAＲandtheNH4+-NremovalrateachievedtheirhighestpointsundertheconditionsofpHtemperatureanddissolvedoxygenDOconcentrationbeing8.030℃and3mgLrespectively．WheninfluentNaClconcentrationwas10gLnitriteoxidizingbacteriaNOBwascompletelysuppressedbutammoniaoxidizingbacteriaAOBmaintainednormalactivity．ThehighCODCrconcentrationimprovedNAＲ．NaClthresholdofpartialnitrificationanddenitrificationbyAGSwasupto50gLwhiletheNH4+-Nremovalratewaslessthan50%atthispoint．ThisindicatesthatAOBwasseverelyinhibitedandAGSlostthecapabilityofpartialnitrification．AGShadobvioussimultaneousnitrificationanddenitrificationSND．TheaverageSNDrateandspecificSNDratewere24.2%and0.63h－1respectively．MoreobviousSNDeffectswerefavoredbylowDOthanhighDO．Keywordsaerobicgranularsludgepartialnitrificationanddenitrificationdissolvedoxygenammonianitrogennitratenitrogenaerationtime．〔wNaC1〕1%．、、、1．、2．3．Hamoda428ρNaCl0、1030gLTOCtotalorganiccarbon96.3%、95.9%99.2%．Panswad5A2O、、2ρNaCl0gL30gLPO43－-P48%10%36%．AGS6．AGS、、7．AGS8-10、AGS．AGS4．．25%、40%、、30%～40%11．ρNO2－-N12．AGSAGS13、AGS14-15、16、AGS17．NaClAGS．SBＲAGSηANH4+-NNAＲNO2－-NAGSSBＲ．11.1SBＲ18cm110cm25L30℃ρDO3mgL．10cm1∶1SBＲd1550min5min480min60min5min．1.21．AGS80d4mmρMLSS3000mgLSVI65．1Table1CompositionsofartificialwastewaterρmgLρmgLNH4Cl269H3BO3150CH3COONa513CuSO4·5H2O30KH2PO410KI180MgSO48MnCl2H2O120FeSO41.2ZnSO4·7H2O120CaCl214CoCl2·6H2O1500.50mLL．1.3ρNH4+-NρNO3－-NρNO2－-NN-1--pHρDOWTWMTQTC20200～100℃ρMLSSpH1molLHCl1molLNaOH．1.3.1AGSρNaClAGSSBＲ116dρNH4+-N、ρNO3－-NρNO2－-NηANAＲρNH4+-NρNO2－-NρNaClηA50%NaCl．ρNaCl4Ⅰ〔ρNaCl10gL〕、Ⅱ〔ρNaCl25gL〕、Ⅲ〔ρNaCl35gL〕、Ⅳ〔ρNaCl40gL〕．8h、pH8.0、30℃、4285NaClρCODCr400mgL、ρNH4+-N70mgLρNaClρNaClρNH4+-NηAAGS．、pH、、ρCODCrρNH4+-NρNaClρNO2－-NρNO3－-NAGSNAＲ．1.3.2ρCODCr400mgLρNH4+-N70mgLρDO3.0mgL30℃pH8.0ρNaCl10、20、30、40gL6、7、8、9h．8hρCODCr400mgLρDO3.0mgL30℃pH8.0ρNaCl10、20、30、40mgLρNH4+-N50、70、90、105mgL．8hρNH4+-N70mgLρDO3.0mgL30℃pH8.0ρNaCl10、20、30、40mgLρCODCr200、400、600、800mgL．1.4NAＲ=CNO2CNO2+CNO3×100%1CNO2ρNO2－-NmgLCNO3ρNO3－-NmgL．SND=CNH4－CNOx－CNH4'CNH4×100%2SNDV=CNH4－CNOx－CNH4'ρMLSS×t3SND%SNDVh－1CNH4NH4+-NmgLCNOxNO3－-NNO2－-NmgLCNH4'NH4+-N12mgLth．SNDSNDVAGS．22.1ρNaClAGS2.1.1ηA1AGS．Ⅰ7dAGSηA85%97%8～20dηA90%11ηA95%ρNaCl10gLAGSAGSNaCl．ⅡρNaCl25gL21～40dNaClAOBρNH4+-N14.3mgLηA80%ηA66ηA100%AOB．ⅢρNaCl35gL67～87dρNH4+-NηA80%～98%NaClAOBAOBSBＲ88～94dηA93%ρNH4+-N5.0mgLAGSAOBρNaClηA．ⅣρNaCl40gLSBＲ18dηAηA80%1ρNaClηAFig.1EffectofNaClconcentrationontheammoniaremovalefficiency52828ρNH4+-N14.0mgLρNaClAGSAOB．113～116dρNaCl50gLSBＲρNH4+-N46mgLηA34%ηA50%AGSAOBSBＲ．、．18．．、19．2.1.2NAＲ2SBＲ116dρNacl．Ⅰ1～7dAGSNAＲ80%8ηA97%NAＲ93%8ρNO3－-N1mgLNOBAOBNOBNOBNOBNO2－-NNO3－-NNOBρNaCl10gLNOB8～20dρNO2－-N37mgLNAＲ95%．ⅡρNaCl25gL21～40dNaClAOBρNH4+-NρNO2－-NρNO2－-NNAＲρNO2－-NρDOSND〔ρDOSNDρDOSND〕41ρDO3mgL41～66dAGSρNaClρNO2－-N43mgLNAＲ99%．ⅢρNH4+-NρNO2－-N94ρNO2－-N35mgL41mgLNAＲ100%AGSAOB．ⅣρNaClρNH4+-NρNO2－-N27mgLρNaClAGSAOB．113～116dρNaCl50gLρNO2－-N9mgLAGSAOBSBＲ．2ρNaClNAＲFig.2EffectofNaClconcentrationonthenitriteaccumulationrateWAN20CFAGＲρNaCl50gLηANAＲ．21AOB24.5gL．22SBＲρNaCl17.6gLNOBAOB．AGS、、、、．AGS50gL6285NaClρNaClρNaClAOB．2.23ρNaCl20gL、8hηA97%NAＲ99%ρNO2－-N43mgLρNaCl40gLηAρNO2－-N50%29mgLNAＲ93%AGSNAＲ．AGSNAＲ9hSBＲ1hNAＲ90%AGSAOBNOBAGS．ρNaCl20gLρNO2－-NρNaClNO2－-N．Ensiyeh23AGS．8hρNaCl20gL．3ρNaClηANAＲFig.3Effectofaerationtimeontheammoniaremovalrateandthenitriteaccumulationrateunderdifferentsalinities2.3ρNH4+-N4ρNH4+-NNAＲ90%ρNH4+-N50mgLNAＲρNH4+-NSBＲρNH4+-NNO2－-NNO3－-NρNO3－-N．ρNaClρNO2－-NρNO2－-N4ρNaClρNH4+-NNAＲηAFig.4Effectofinfluentammonianitrogenloadingonthenitriteaccumulationrateunderdifferentsalinities72828ρNaCl20gLρNaCl40gLρNaCl40gLηA86%．ρNaClNAＲρNaCl20gLNAＲ95%ρNO2－-N43mgLρNaCl40gLNAＲ94%ρNO2－-N24mgLρNaClAOB．ρNH4+-N90、105mgLηASBＲρNH4+-N70mgLρNH4+-NA