A2NBAF组合工艺深度除磷脱氮研究

44220122JOURNALOFHARBININSTITUTEOFTECHNOLOGYVol.44No.2Feb．2012A2N/[e-mail]2．518031BAFA2NNH+4SSTPBAFA2N/BAF．A2NCOD、NH+4-N、TP82.0%、70.9%、90.0%NH+4-N40.0mg/LNH+4-N10.0mg/LBAFNH+4-NSSCOD、TP、NH+4-N、NO－3-N、SS35、0.35、1.06、8.01、7mg/LA．X703A0367－6234201202－0080－05StudyoncombinedA2N/BAFprocessforadvancednitrogenandphosphateremovalLIJi1LXiao-mei1DONGWen-yi1ZHANGZhen-jiang1FANYi2WANGWei-kang21．EnvironmentalScienceandEngineeringResearchCenterHarbinInstituteofTe[e-mail]n＆ConsultationCo．Ltd．518031ShenzhenGuangdongChinaAbstractTheA2NprocesswithBAFasanitrificationunitwasresearchedaimingatthelowcarbonandnitro-genratiodomesticwastewaterinsouthernChina．Accordingtotheproblemsthateffluentammoniaexceededthestandardbecauseoftheammoniacarriedinsurpasssludgeandtotalphosphatecouldn’treachthedis-chargestandardwhenSSofsecondarysettlingtankwashighasecondaryBAFwassetupandthetotaltreat-menteffectofA2N/BAFprocesswasstudied．ResultsshowedthattheaverageremovalratesofCODammoniaandTPofA2Nstagewere82.0%70.9%and90.0%respectively．Effluentammoniaconcentrationofsec-ondarysettlingtankexceeded10mg/Lwheninfluentwasmorethan40mg/L．AverageconcentrationofCODTPammonianitrateandSSinfinaleffluentwere350.351.068.01and7mg/LrespectivelywhichhadsatisfiedtheA-levelofthenationalstandards．Keywordslowcarbon/nitrogenratioA2NdenitrifyingphosphateremovalbiologicalaeratedfilterBAFstart-up2010－09－16．2006BAB17B042006BAB17B062008ZX07317-02SG200810130012A2008006．1973—1967—．．1－3A2NSRT4－5．PHB6．A2N50%30%50%7－89－11．A2N、SS．12．BAFA2NSSA2N/BAF．11.170L/h．1A2N．A2N、、BAF、、HRT1.0、1.5、2.0、3.51.5h．3、HRT0.5、2.50.5h．．BAFBAFHRT0.5h．、BAF3～5mm4.0、2.0m3.0、1.0m3∶11∶1．．1.21．出水二级BAF二级硝化段A2N段一级BAF进水剩余污泥出水二沉池回流污泥超越污泥缺氧池初沉池厌氧池中沉池①②③①厌氧段②缺氧段③后曝气段1A2N/BAF1mg·L－1CODBOD5ρNH+4-NρNO－3-NρTNρTP114～27464～15015.6～52.20～1.0520.9～60.41.41～5.30155.0～280.620412634.30.3640.94.40195.41.3CODNH+4-NNO－3-NTN-TPMLSSSSHACHDR/890．22.1A2/O．3d．10d70L/h．、NH+4-N．NH+4-N78%．、、、、．．·18·2A2N/BAF/．NO－3-NNO－3-NTP2.0～2.5TPNO－3-N．27dTP80%．2.227dA2N51BAF．MLSS2000～2500mg/LSRT30d．33.1A2NCODA2NCOD2COD114～274mg/L204mg/LCOD18～67mg/L42mg/L82.0%．二沉池BAF出水BAF进水原水30025020015010050020406080100120t/dCOD/(mg·L-1)2A2NCODBAFCOD．COD49.2%．BAFCODBAFCOD16～48mg/LCOD34.0%．BAF．3.2A2NA2NNH+4-N3NH+4-N15.6～52.2mg/L34.3mg/L．BAFNH+4-N．BAFNH+4-N0～7.40mg/L3.36mg/L88.9%．NH+4-NNH+4-NNH+4-NNH+4-N．4.48～23.1mg/L10.3mg/LNH+4-N70.9%．BAFNH+4-N．20NH+4-N30.7～52.2mg/LBAFNH+4-NBAF85.6%．二沉池BAF出水BAF进水原水605040302010020406080100120t/d籽(NH4+鄄N)/(mg·L-1)3A2NNH+4-NA2NNO－3-N4NO－3-N0.36mg/L．BAFNO－3-N28.5mg/L．NO－3NO－3．4NO－3-N0.50mg/L．缺氧段BAF出水BAF进水原水1.20.80.4353025201510020406080100120t/d籽(NO3-鄄N)/(mg·L-1)4A2NNO－3-NA2NNH+4-N、NO－3-NTN5．BAFNH+4-NNO－3-NTN．BAFTN．·28·44NO－3-N．NH+4-NNH+4-NTN．TNNO3鄄NNH４+鄄N１１.５0.３３１0.３３１.9２8.５３．３６４0.90.３６３４.３原水一级BAF出水缺氧池454035302520151050籽/(mg·L-1)-5A2NNH+4-N、NO－3-NTN3.3A2NA2N6．TP1.41～5.30mg/L4.40mg/L1.44mg/L0.47mg/L90.0%．TP7.71mg/L．TP9.01mg/L．TP0.11～1.46mg/L0.53mg/L．TP0～1.44mg/L00.47mg/L．1.30mg/L、COD．．二沉池缺氧段厌氧段原水厌氧池15105020406080100120t/d籽(TP)/(mg·L-1)6A2NTPTP0.5mg/LTP0.5mg/L．SSTP．SS．TPSS7．SSTPSS10mg/LTP．1.00.80.60.40.201015202530籽(SS)/(mg·L-1)籽(TP)/(mg·L-1)y=0.0312x-0.0177R2=0.89317SSTP3.4BAFA2NNH+4-NNH+4-N．NH+4-N．SSTPSSTP．BAFNH+4-NSSSSTP．A2NBAFBAF．BAF、HRT30min．BAFCOD、NH+4-NNO－3-N8．NO3鄄NNH4鄄NCOD605040302010%010203040506070t/d籽/(mg·L-1)+-8BAFCOD、NH+4-NNO－3-NCOD20～50mg/L35mg/L．7NH+4-N0.5mg/L1.06mg/L．1∶1BAF．NO－3-N6.20～11.53mg/L8.01mg/L．9BAFTPSS．·38·2A2N/BAFTP0.5mg/L0.35mg/L．17、230.60、0.51mg/L．SS5～9mg/L7mg/L．SSTP1086420102030405060t/d籽/(mg·L-1)9BAFTP、SS8、9BAFCOD、NH+4-N、TPSS《》GB18918—2002A．BAF．41A2N/BAFA．2A2NCOD82.0%BAF49.2%34.0%COD．3BAF88.9%NH+4-NA2NNH+4-NNH+4-N10.3mg/LA1．4A2N90.0%TPSSSS15mg/LTP．5BAFNH+4-N、NO－3-N1.06、8.01mg/LSS、TPSS、TP7、0.35mg/LCODCOD．1LACKONDRYSDALEGDBUXF．Anoxicphosphor-usremovalbydenitrifyingheterotrophicbacteriaJ．WaterSciTech2003471117－22．2TSUNESOHNOTKOICHIetal．Simultaneousnitro-genandphosphorusremovalusingdenitrifyingphosphateaccumulatingorganismsinasequencingbatchreactorJ．BiochemicalEngineeringJournal200627191－196．3CARVALHOGLEMOSPCOEHMENAetal．Deni-trifyingphosphorusremovallinkingtheprocessperform-ancewiththemicrobialcommunitystructureJ．WaterRes2007414383－4396．4LIXiangkunHUANGRongxinBAOLinlinetal．Sim-ultaneousphosphorusandnitrogenremovalinacontinu-ous-flowtwo-sludgesystemJ．JournalofEnvironmentalSciences200618152－57．5．A2NJ．20082982249－2253．6．J．200826111－14．7KUBATLOOSDRECHTvanMCMHEIJNENJJ．Phosphorusandnitrogenremovalwithminimalcodre-quirementbyintegrationofdenitrifyingdephosphatationandnitrificationinatwo-sludgesystemJ．WaterRes19963071702－1710．8SHOJITSATOHHMINOT．Quantitativeestimationoftheroleofdenitrifyingphosphateaccumulatingorgan-ismsinnutrientremovalJ．WaterSciTechnol2003471123－29．9．A2NJ．20043481046－1049．10LIUHongboSUNLipingXIASiqing．AnefficientDPButilizationprocessthemodifiedA2NprocessJ．BiochemicalEngineeringJournal200838158－163．11．J．2009251728－30．12．A2NJ．2008241337－41．·48·44