ABRMBR工艺处理生活污水实现短程硝化吕亮

3812201712ENVIＲONMENTALSCIENCEVol．38No．12Dec．2017ABＲ-MBＲ1212121212123123*1．2150092．2150093．215009ABＲ-MBＲMBＲ．ABＲ-MBＲABＲhydraulicretentiontimeHＲT6h100%300%30℃±2℃DO0.5～1.0mg·L－10.3～0.7mg·L－1MBＲHＲTMBＲHＲT3h5hnitriteaccumulationrateNAＲ60%15%．pH、freeammoniaFAfreenitrousacidFNADO0.3～0.7mg·L－1HＲTsludgeretentiontimeSＲT．CODNH+4-N50mg·L－12mg·L－190%TN72%．ABＲ-MBＲX703.1A0250-3301201712-5154-08DOI10．13227/j．hjkx．2017061532017-06-152017-06-3051578353BK2016035616KJB610013XKQ2015041992～[e-mail]*[e-mail]itrificationintheABＲ-MBＲProcessTreatingDomesticWastewaterLLiang12ZHAOShi-hui12WEIJia-min12ZHANGMin12YOUWen12WUPeng123SHENYao-liang123*1．SchoolofEnvironmentalScienceandEngineeringSuzhouUniversityofScienceandTechnologySuzhou215009China2．JiangsuCollaborativeInnovationCenterofWaterTreatmentTechnologyandMaterialSuzhou215009China3．KeyLaboratoryofEnvironmentalScienceandEngineeringofJiangsuProvinceSuzhou215009ChinaAbstractTheoperationalcontrolconditionsforrealizingshortcutnitrificationinthemembranebioreactorMBＲprocesswasinvestigatedinalab-scaleanaerobicbaffledreactorABＲ-MBＲcombinedsystemwhichlaidthefoundationforfurtherresearchontheperformanceofdenitrificationphosphorusremovalinthesystem．TheexperimentalresultsunderdifferentconditionsshowedthatshortcutnitrificationintheMBＲwasachievedbycontrollingthedissolvedoxygenDOconcentrationtolowlevels0.5-1.0mg·L－1to0.3-0.7mg·L－1andchangingtheeffectivevolumeoftheMBＲtocontrolhydraulicretentiontimeHＲTwiththeHＲTintheABＲequalto6hsludgerefluxratioof100%NO－x-Nrefluxratioof300%andtemperatureof30℃±2℃．FinallytheshortcutnitrificationdeterioratedastheHＲTintheMBＲincreasedfrom3hto5hwithnitriteaccumulationratedramaticallydroppingfrom60%to15%．TheanalysisoftheinfluencingfactorsofshortcutnitrificationshowedthatmaintaininglowDOconcentration0.3-0.7mg·L－1andgraduallyshorteningHＲTwerethekeyfactors．ThepHfreeammoniaFAfreenitrousacidFNAtemperatureandsludgeretentiontimeSＲThadaslightlypositiveeffectonshortcutnitrification．DuringtheperiodofshortcutnitrificationastableandhighefficiencyremovalofCODandNH+4-NwereachievedandtheaverageconcentrationoftheeffluentofCODandNH+4-Nwhoseremovalrateswereabove90%werebelow50mg·L－1and2mg·L－1respectivelyandtheremovalefficiencyoftotalnitrogenTNreached72%．KeywordsABＲ-MBＲcombinedprocessshortcutnitrificationhydraulicretentiontimeHＲTNO－x-NrefluxnitriteaccumulationrateNAＲA2/O．1．Kuba2O2NO－3-NSatio3NO－2-NdenitrifyingphosphorusremovalbacteriaDPBs12ABＲ-MBＲ．PAOsDPBsNO－3/NO－2O245．“”6～8．ABＲ9．ABＲ10VFA．MBＲSＲTHＲT11．HＲT12、DO13、14、SＲT15、pH16、FAFNA1718．、19～21ABＲ-MBＲ．11.11ABＲ-MBＲFig．1SchematicdiagramoftheABＲ-MBＲsetupABＲ-MBＲ1．ABＲ47.2LMBＲ3.6L．ABＲ1、23、4MBＲ．MBＲ10min8min/2min．PVDF0.2μmTMPTMP≥30kPa．．Ｒ1ABＲ4ABＲ2Ｒ2MBＲABＲ3．、Ｒ1、Ｒ2PLC、．1.21∶1C/N1．、、、、．A2/O．ABＲMLSS28000mg·L－1MBＲMLSS4000mg·L－1．1Table1CharacteristicsoftherawwastewaterCOD/mg·L－1292.4～431.8377.8NH+4-N/mg·L－147.3～59.554.5NO－2-N/mg·L－10～0.010.004NO－3-N/mg·L－10.05～1.20.5PO3－4-P/mg·L－16.7～9.48.1pH7.1～7.37.21.30.45μm22COD、NH+4-N、NO－2-N、NO－3-N、PO3－4-P．2．12NAＲMBＲAHＲT．NAＲ=ρNO－2-NρNO－2-N+ρNO－3-N×100%1AHＲTM=11+Ｒ2HＲTM2ρNO－2-NρNO－3-NMBＲNO－2-NNO－3-Nmg·L－1AHＲTMMBＲhHＲTMMBＲh．5515382Table2TestitemsandanalyticalmethodsforwaterqualityCODMLSSNH+4-NSV%30minNO－2-NN-1--pHpHNO－3-NDODOPO3－4-P1.45Ⅰ～Ⅴ3．．．25℃±2℃30℃±2℃．MBＲDO0.3～1.0mg·L－1．3Table3Experimentalprocessesandparameter/conditioncontrolHＲT/h/%ABＲMBＲＲ1Ｒ2/℃DO/mg·L－1ⅠA1～39d1260025±20.5～1.0B40～55d12610010025±20.5～1.0ⅡC56～77d12510010025±20.5～1.0D78～104d12410010025±20.5～1.0E105～117d9610020025±20.3～0.7ⅢF118～129d9510020025±20.3～0.7G130～141d9310020025±20.3～0.7H142～157d6310030030±20.3～0.7ⅣI158～171d6410030030±20.3～0.7J172～181d6510030030±20.3～0.7K182～191d4510040030±20.3～0.7ⅤL192～201d4410040030±20.3～0.7M201～211d4310040030±20.3～0.72ABＲ-MBＲNO－3-NNO－2-NNAＲFig．2VariationsofNO－3-NNO－2-NandNAＲintheABＲ-MBＲprocess22.1ABＲ-MBＲ2513MBＲNO－3-N、NO－2-NNAＲ．3．1～39dⅠ．．NO－2-N651512ABＲ-MBＲ．DOAOBNOBAOB．2NAＲ90%．3HＲTAOB．355mg·L－160mg·L－1．AOB．FA．ⅠMBＲFA．ⅡABＲHＲT12h100%MBＲHＲT．2ⅡMBＲHＲT6hMBＲNO－2-NⅠMBＲHＲTMBＲNO－2-NNO－3-N25mg·L－1NAＲ12.7%．ⅠHＲT．ⅢABＲHＲT9h200%．2MBＲHＲT6h4hMBＲNO－2-NNAＲⅡ8%40%Ⅱ．HＲTHＲTMAHＲTMNAＲ．ⅣABＲHＲT6h300%HＲTMⅢ3h5h．2HＲTM=3h15dNAＲ61%65%HＲTMNAＲ．HＲTＲ2=300%HＲTM=3hAHＲTM．ⅤABＲHＲT4h400%2HＲTAHＲTMⅣNAＲHＲTMMBＲNO－2-NNAＲⅣ．2.2ABＲ-MBＲHellinga2330～35℃AOBNOB．Balmelle24AOBpH8.5．MBＲpH8.278.03～8.54AOBNOBpH．Anthonisen25FAAOBNOB10～150mg·L－10.1～1.0mg·L－1．3FA0.22mg·L－1．Vadivelu26FNA＞0.1mg·L－1AOBFNA＞0.011mg·L－1NOB．4FNA0.00027mg·L－1AOBNOBFNA．FA=NH+4-N×10pHexp6334/273+T+10pH3FNA=4714×NO－2-Nexp－2300/273+T×10pH44①DO．Guisasola27AOBNOB0.3～0.5mg·L－10.7～1.8mg·L－1AOBNOB0.25～0.6mg·L－10.72～2.2mg·L－1AOBNOBDOAOBNOB．DONOBAOB．②HＲTM．HＲT2829．HＲTAOBNOBAOB．HＲTHＲTMNAＲ．③AHＲTM．ⅣHＲTM=3hＲ2=300%AHＲTMNO－2-N751538MBＲNO－2-N．④SＲT．Van15AOBNOB14℃AOBNOB8～36h12～59h．SＲTAOBNOBAOBNOBAOB12．SＲT15～20d．2.3ABＲ-MBＲ3ABＲ-MBＲ．ⅠMBＲNH+4-N．ⅡMBＲDO0.5～1.0mg·L－1NH+4-N95%4100%TN45.8%NO－3-N24mg·L－1．3ⅡB、C、DHＲTMNH+4-NHＲTMMBＲ．3ⅢMBＲDO0.3～0.7mg·L－1ABＲ9h200%TN65%NO－3-N12mg·L－1HＲTMNH+4-NDO．ⅣABＲ6h300%TN72%HMBＲNAＲ60%MBＲNH+4-N97.8%34．ⅤABＲHＲT4h400%TN78%HＲTMNH+4-N98%．3ABＲ-MBＲFig．3ＲemovalofNH+4-Nin