常温SBR亚硝化快速启动及优化试验研究李冬

32620116ENVIRONMENTALSCIENCEVol．32No．6Jun．2011SBR11*1231.1001242.1011023.150090SBR、245.28mg/L58.08mg/LDO0.15～0.40mg/L3320d85%5DO．22.3～27.6℃5DO0.27、0.48、0.72、0.99、1.47mg/LΔcNO－2-N/tΔcNO－3-N/t16.37、17.28、17.69、7.29、3.6495.28%、94.49%、94.64%、87.84%78.63%．DO0.72mg/L、4h．2313d94%．SBRX703.1A0250-3301201106-1653-072010-06-082010-08-2350878003809200608UWQA08QAK2010052008ZX07208-003-0032008ZX07420-004-BJUT0012008ZX07208-005-0031976～[e-mail]*[e-mail]rt-upandOptimizationofParametersforNitrosationatRoomTemperatureLIDong1TAOXiao-xiao1LIZhan1WANGJun-an2ZHANGJie31.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineeringBeijingUniversityofTechnologyBeijing100124China2.ResearchandDevelopmentCenterBeijingSoundEnvinmmentalGroupBeijing101102China3.StateKeyLaboratoryofUrbanWaterResourceandEnvironmentHarbinInstituteofTechnologyHarbin150090ChinaAbstractThenitrosationratewasaround85%after33continuouscycles20dwiththealternativeinfluentofhighandlowammoniumwastewaterinasequencingbatchreactorSBRwhichlowoxygen0.15-0.40mg/L．Thegrowthofnitrobacteriawasinhibitedsuccessfullywhichledtoasteadyandhighaccumulationofnitrite．TheeffectsoffivedifferentDOconcentrationswereinvestigatedwithlowammoniuminfluentonnitriteaccumulation．TheresultsclearlyshowedthatratiosofthenitriteaccumulationrateΔcNO－2-N/ttothatofnitrateaccumulationΔcNO－3-N/twere16.3717.2817.697.293.64atfivedifferentDOconcentrations0.270.480.720.991.47mg/Lrespectively．Thecorrespondingnitrosationrateswere95.28%94.49%94.64%87.84%and78.63%atthetemperatureof22.3-27.6℃．Resultsshowedthatamaximumof94%nitrosationefficiencywasreachedwithaverageDOconcentrationof0.72mg/Landtheaerationtimeof4hoursatnormaltemperatureafter23continuouscycles13d．KeywordsroomtemperaturenitrosationsequencingbatchreactorSBRfreeammoniadissolvedoxygen、、．1～4、、5．“A/O→→”．HNO2．DOammoniaoxidizingbacteriaAOBnitriteoxidizingbacteriaNOB0.2～0.4mg/L1.2～1.5mg/L67～10DO＜1.0mg/LNOBAOBDO11DO0.7mg/L．freeammoniaFADOI:10.13227/j.hjkx.2011.06.034322Vadivelu12FA＞6mg/LNOBChung13FA5～10mg/L1415NOBFAFANOBFAAOBNOBFA．1612～14℃30℃SHARON1730～35℃．AOBNOBFADONOB．11.125L1.11cm．1．2．3．4．5．6．/pH7．8．pH1Fig．1Schematicdiagramoftheexperimentalequipment1.2A2/OMLSS9.85g/L6L4238mg/L．．A/ONH+4-NA/O．1．1Table1RawwastewaterqualityNH+4-N/mg·L－1NH+4-N/mg·L－1NO－2-N/mg·L－1NO－3-N/mg·L－1COD/mg·L－1pH200～35835～81＜1＜1＜507.5～8.3245.2858.08————1.3SBR5min、、2～3h、5min4/52．2Table2OperationalconditionsofthereactorDO/mg·L－1/℃/h/10.15～0.400.2822.3～24.483320.19～0.340.2723.0～27.185730.44～0.510.63～0.770.95～1.041.42～1.510.480.720.991.4724.4～27.6—4945616SBRSBR10hDO2～4mg/L8～10d100%．3AOB、DO245.28mg/LDO0.28mg/L8hNOBAOB、DO58.08mg/LDOAOBDO0.48、0.72、0.99、1.47mg/L4pH、DODO．1.4SV30、MLSS、SVI、NH+4-N、NO－2-N、NO－3-NDO、pH．DO、pHWTWpH/Oxi340ipH、NH+4-NNO－2-NN-1-NO－3-N18．FApH19FANH+4-Nmg/L=17×NH+4Nmg/L×10pH14×KbKw+10()pHKbNH+4-N25℃Kb=10－4.8Kw25℃Kw10－14．22.11DO0.15～0.40mg/LFANH+4-N14.39mg/L25.22mg/L．23、DO、8h．20%=ΔcNO－2-N×100%ΔcNO－2-N+ΔcNO－3-NΔcNO－2-Nmg/LΔcNO－3-Nmg/L．237.62%．32SBRNH+4-NFig．2ProfilesofNH+4-NconcentrationininfluentandeffluentandthenitrosationrateinSBRatroomtemperature556132．3～53．、DO1350.88%1680%FADOAOB．3320d85%AOBNOB．2128±0.5℃、0.3m3/h67d80%22SBR150～320mg/L35±1℃DO1.0～1.6mg/L4422d95%3320d．3SBRNO－2-NNO－3-NFig．3ProfilesofinfluentandeffluentNO－2-NNO－3-NconcentrationinSBRA/OSBR2DO0.19～0.34mg/L8hFA0.68～3.66mg/L．2、334～5736、3734、3595%70%239.81635.532mg/L0．38、39、4088%NOBFA．45～72mg/L61.94%95%．FAAOBNOB．2.2DO、AOBDODO．4DOSBR、DO65616SBR4DO、Fig．4EffectsofDOonNH+4-NNO－2-NNO－3-NNH+4-Nremovalefficienciesandnitrosationrate．4DO6hDO1.47mg/L3h．DO0.48mg/L0.72mg/L90%100%．78～81DO0.99mg/LNO－3-N80%．DO1.47mg/LNO－3-N280%NOBNO－2-NNO－3-N．DO5DO0.19～0.34mg/L0.27mg/L0.63～0.77mg/L0.72mg/Lamg·L·h－1bmg·L·h－1ba15DOAOBNOBFig．5EffectsofDOonAOBandNOBatroomtemperatureandlowammoniumconcentrationcmg·L·h－10.29、0.47、0.64mg/L·h1ab94%．DO0.99mg/Lab4b．DO1.47mg/Lb/cDO0.72mg/L75613217.693.64NOB．DO0.72mg/LNOBNOB．24.4～27.2℃45～80mg/LpH7.54～8.11DO0.72mg/L．484DO0.72mg/L95%DO．2.36SBR．6SBRFig．6OperationsituationinSBRundertheoptimumcondition45～80mg/L24.4～27.2℃DO0.63～0.77mg/L4h94%100%．88、102、104、10510611.27±1mg·L·h－110.67±1.5mg·L·h－1．514.50mg/L·h．5NH+4-N4DO．FADO23＞85%．2.47．71～11SV3039%～54%3461～4238mg/LSVI150mL/g．13SV3066%SVI186.18mL/g．7SV30、SVIFig．7VariationsofSV30SVIandnitrosationrateinthereactor2702mg/L．COD＜50mg/LDO＜1mg/L．785616SBR．3122.3～27.1℃FA、DONOB92%．FA0.68～3.66mg/L61.94%95%FANOB．224.4～27.2℃45～80mg/LpH7.54～8.11DO0.72mg/L93%．2313d94%DO．3DO1.42～1.51mg/L76%．DO0.72mg/L95%DO．4．．1MulderAVandeGraafAARobertsonLAetal．Anaerobicammoniumoxidationdiscoveredinadenitrifyingfluidized-bedreactorJ．FEMSMicrobiologyEcology1995163177-183.2VandeGraafAAMulderADeBruijnPetal．AnaerobicoxidationofammoniumisabiologicallymediatedprocessJ．AppliedandEnvironmentalMicrobiology19956141246-1251.3．J．199719425-28.4．J．200016225-28．5．———J．2002285308-310．6．M．2006.47．7HanakiKWantawinCOhgakiS．Nitrificationatlowlevelsofdissolvedoxygenwithandwithoutorganicloadinginasuspended-growthreactorJ．WaterResearch1990243297-302.8L