低CN餐厨废水半短程硝化试验研究张周

3512201712EnvironmentalEngineeringVol．35No．12Dec．2017C/N*1212121212121.2141222.214122NH+4－N、C/N－DO。SBＲρDO0.5～0.6mg/L30±1℃NO－2－N90%nNO－2－N∶nNH+4－N1COD65%。10～1hCOD1～8hCODNO－2－NDONOBNO－3－N。DOAOBNOBNH+4－NρDO1.5mg/LNOBNO－3－N。DOC/N。C/NDOI10.13205/j．hjgc．201712005STUDYONPAＲTIALNITＲIFICATIONOFLOWC/NFOODWASTEWATEＲZHANGZhou12ZHAOMing-xing12ＲUANWen-quan12MIAOHeng-feng12ＲENHong-yan12HUANGZhen-xing121.SchoolofEnvironmentalandCivilEngineeringJiangnanUniversityWuxi214122China2.JiangsuKeyLaboratoryofAnaerobicBiotechnologyWuxi214122ChinaAbstractAccordingtothecharacteristicsoffoodwastewaterwithhighNH+4－NandlowC/Nratiothetraditionalbiologicaldenitrificationprocessrequiredalargequantityofcarbonsourcesandtheshort-cutnitrification-anaerobicammoniumoxidationprocesscouldremovepollutantsbetterinthiskindofwastewater．ThepartialnitrificationofwastewaterwasachievedbycontrollingDOconcentration．Usingtheself-madeSBＲreactorcouldachievepartialnitrificationofwastewaterwithDOconcentrationof0.5～0.6mg/Landtemperatureof30±1℃．TheNO－2－Naccumulationrateinthereactorwashigherthan90%themolarratioofNO－2－NtoNH+4－Nintheeffluentwereabout1andtheCODremovalratewasabout65%．Afterthesystemwasstableitwasfoundthatin0to1hourCODinthesystemwasrapidlydegradedbutin1to8hourCODdegradationratesloweddowntheeffluentNO－2－Ngotaccumulated．ThelowerDOconcentrationwasbettertolimittheactivityofNOB．TheNO－3－Nconcentrationinthereactioncyclewasatlowlevel．WhenDOconcentrationwastoolowthesystemAOBandNOBwereinhibitedandoxidationofNH+4－Ntooklonger．WhenDOconcentrationwashigherthan1.5mg/LtheactivityofNOBgraduallywasrecoveredandNO－3－Nconcentrationgotincreased．ThereforecontrollingDOconcentrationwaseffectiveinachievingpartialnitrificationoflowC/Nfoodwastewateritcouldprovideconditionsforthefollow-upexperiments．KeywordsfoodwastewaterlowC/Nshort-cutnitrificationnitrificationrate*2012BAC18B01-2BK20130126。2017－06－120、1。NH+4－NNO－3－NNO－3－NN22。2070VotesNO－2－N3-6。12C/NSHAＲON、ANAMMOX7-11。、、12-13。COD、NH+4－N、C/NTN。NO－2－N。。DO、FA、pH14-16。SBＲDOpHDOAOBNOBAOBNO－2－NnNO－2－N∶nNH+4－N1。SBＲ。11.11。1Table1Characteristicsoffoodwastewatermg/LpHρCODρNH+4－NpHρNO－3－NρNO－2－NρTN1044～2095731～16247.70～8.218～71＜5749～18211.21。1—2—3—pH4—pH5—6—DO7—DO8—9—。1Fig．1DiagramofthetestdeviceSBＲ30cm30cm15L。DO。。。1.31dρDO0.5～0.6mg/L。SBＲ10min、8h、2h、10min。25L。30±1℃。3I1～245II25～502III50～80。SBＲDODO。1.4CODN-1--－MLSS。171。=ΔCNO－2－N×100%ΔCNO－2－N+ΔCNO－3－N1ΔCNO－2－N、ΔCNO－3－Nmg/L。22.1、。ρCOD356～487mg/L404mg/LρNH+4－N156～262mg/L199mg/L。2。6NH+4－NNO－2－NNO－3－NNH+4－N60%NO－3－N1235DONO－2－NNO－3－N。—◆——▲——★——☆—。2Fig．2Variationtrendsofthreetypesofnitrogeninthestar-upprocess25ρCOD=645～842mg/LρNH+4－N=553～731mg/L。NH+4－N60%。AOB“”18。19“”。2NO－3－NNO－2－N80%。ρCOD1510～2130mg/LρNH+4－N983～1510mg/L。NH+4－N60%NO－3－NNO－2－NnNO－2－N∶nNH+4－N190%SBＲ。DONOBAOB。2.2CODCOD3。COD75%10～24CODCOD60%。—★—。3CODFig．3ChangeofCODinthestar-upprocess2CODCOD。COD63%。3COD60%。DOC/NDOC/NCOD60%～70%。20SBＲ21～30℃80%ρCOD900mg/LCOD。2.3SBＲ11COD。5LρCOD、ρNH+4－N、ρNO－2－N、ρNO－3－N18821298225mg/L0h。142COD。0～1hCOD1hAOBCOD。2212C/N—■—COD。4CODFig．4TrendsofCODandthreetypesofnitrogenconcentrationsinareactioncycleCODAOBNH+4－NNO－2－NNO－3－N。DONOBNO－2－NNO－3－NNO－3－N。2.4DODONO－2－N21-22。DO。23SBＲ、ρDO0.15～0.72mg/LNO－2－NDONOB。Ｒuiz24ρDO0.7～1.4mg/LNO－2－NDONO－2－NDO0.5mg/L。DOSBＲNO－2－NDODO。6。5DO。1ρDO0.09～0.13mg/L0.11mg/L12hDONOBAOB。2ρDO0.48～0.53mg/L0.5mg/L8h。ρDOAOB。3ρDO0.77～——DO————☆—。5DOFig．5EffectofDOonnitrosationoperationefficiency0.84mg/L0.8mg/L6h。85%90%。。4ρDO1.15～1.23mg/L1.2mg/L。90%DO4hDO。5ρDO1.48～1.54mg/L1.51mg/L3h。ρDO1.5mg/LNO－3－NDONOBAOB。6ρDO0.79～0.83mg/L0.81mg/L6h。5ρDO0.8mg/L6h。70%DO90%。DO。DONOBAOB。DODODONOBNOBNO－2－NNOBNO－3－N。31SBＲC/N30±1℃ρDO0.5～0.6mg/LNO－2－N90%nNO－2－N∶nNH+4－N≈1。2DO、C/NCOD60%～323570%。31CODCOD。4DOAOBNOBNH+4－N。ρDO1.51mg/LDONOBNOB。1．J．200926926-29．2．J．20173411-6．3SieghstH．NitrogenremovalfromdigestersupernatantcomparisonofchemicalandbiologicalmethodsJ．WaterScienceandTechnology1996341/2399-406．4MulderJWvanKempenＲ．N-removalbySharonJ．WaterQualityInternational19973430-31．5．－J．201735415-19．6Surmacz-GorskaJCichonAMikschK．NitrogenremovalfromwastewaterwithhighammonianitrogenconcentrationviashorternitrificationanddenitrificationJ．WaterScienceandTechnology1997361073-78．7vanKempenＲMulderJWUijterlindeCAetal．OverviewFullscaleexperienceoftheSHAＲONprocessfortreatmentofrejectionwaterofdigestedsludgedewateringJ．WaterScienceandTechnology2001441145-152．8．M．2004．9MulderAvandeGraafAAＲobertsonLAetal．AnaerobicammoniumoxidationdiscoveredinadenitrifyingfluidizedbedreactorJ．FEMSMicrobiolEcology1995163177-184．10ElenaGoginaIgorGulshin．SimultaneousnitrificationanddenitrifieationinwithlowdissolvedoxygenlevelandC/NratioJ．ProcediaEngineering2016153189-194．11．J．200916341-44．12vanderStarM．J．2007231815-19．13TurkOMavinciDS．SelectiveinhibitionAnovelconceptforremovingnitrogenfromhighlynitrogenouswastesJ．EnvironmentalTechnologyLetters19878419-426．14ChristianFMarcBPhilippH．Biologicaltreatmentofammonium-richwastewaterbypartialnitritationandsubsequentanaerobicammoniumoxidationanammoxinapilotplantJ．JournalofBiotechnology200299285-306．15．J．2016452232-234．16．D．2016．17