AO生物接触氧化工艺处理海水养殖废水费翔

。201266.5%[1]。[2]。。、[3]。[4]。A/O2。、、COD、[5]。。、[6-7]。A/OHRTR。11.11AO1～3cm3～5cm。2mm。。。66.4cm23.8cm35.0cm1:255.3L。1121111.2002402.325005、、A/OHRTR。HRT12～48h、R50%～200%A/O。HRT=24h、R=100%92.9%71.9%。CODHRTRCOD90%。A/O。A/OHRTX703.1A1000-3770(2017)[e-mail]@sjtu.edu.cn1Fig.1Schematicdiagramofexperimentaldevice43820178Vol.43No.8Aug.,2017DOI:10.16796/j.cnki.1000-3770.2017.08.021971.2GB17378.4－2007[8]。DO。pHpH。NH4+-NNO2--NNO3--NINNH4+-N、NO2--NNO3--N。NH4+-N、、pH[9]。CODMn。2d1。3d。1.3。1L2%NaCl17.7gMgSO4·7H2O5.7gNaHCO30.3g。。NH4+-NNH4Cl4.5～5.5mg/L。CODC6H12O6ThOD45～55mg/L。TPKH2PO40.2～0.5mg/L。。1.4。HRT48h1.15L/h。1%2%。2%。80%100%。25～29℃。22.1HRT2HRT。HRT48、24、12h100%ThOD50mg/L10:1。NH4+-N、CODDN、。HRTA/ONH4+-N2。2HRT48、24、12hNH4+-N88.2%、92.9%、41.4%。NH4+-N。HRT48hDNNH4+-NDO0.2～1.0mg/LNH4+-N90%。HRT24h67.8%25.1%NH4+-NNH4+-N92.9%HRT48hNH4+-N[10]。HRT12hNH4+-N41.4%DNNH4+-NHRTNH4+-N。2～16m3/(m2·h)4.13m3/(m2·h)[11]。2。HRTIN3。3HRT48、24、12hIN45.3%、71.9%、49.7%。ININ。NH4+-NDO2HRTNH4+-NFig.2InfluentandeffluentcontentandremovalefficiencyofNH4+-NunderdifferentHRTconditionsρ(NH4+-N)ρ(NH4+-N)/(mg·L-1)
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/%t/d43898IN[12]。HRTINNH4+-N。IN。3DNCOD3.0～5.5mg/LCODHRTCOD。CODDO。COD。CODDB33/453－2006≤6.0mg/L[9]。QIA/ONH4+-NCODCOD[13]。。2.224hHRT100%、200%、50%。NH4+-N4。450%100%NH4+-N92.9%91.8%。200%75.4%。HRT。50%～300%NH4+-N[10]。。100%NH4+-N0.39mg/LpH=8.07、25.0℃、2%NH30.02mg/LDB33/453－2006≤0.060mg/L。IN5。5100%、200%、50%IN71.9%、70.5%、67.1%。BAEZAA/OIN[14]。DO。50%100%200%DO0.20、0.57、0.96mg/L。DO。5INFig.5InfluentandeffluentcontentandremovalefficiencyofINunderdifferentrefluxratioρ(IN)ρ(IN)/(mg·L-1)05101520253035400246810020406080100

/%t/d3HRTINFig.3InfluentandeffluentcontentandremovalefficiencyofINunderdifferentHRTconditionsρ(IN)ρ(IN)/(mg·L-1)05101520253035400246810020406080100

/%t/d4NH4+-NFig.4InfluentandeffluentcontentandremovalefficiencyofNH4+-Nunderdifferentrefluxratioρ(NH4+-N)ρ(NH4+-N)/(mg·L-1)051015202530354001234567020406080100

/%t/dA/O99StudyonMarineAquacultureWastewaterTreatmentbyA/OBio-contactOxidationTechnologyFEIXiang1,ZHANGXiaoyi1,ZHOUZhiming2,HEShengbing1,ZHOUWeili1,HUANGRongzhen1(1.SchoolofEnvironmentalScienceandEngineering,ShanghaiJiaotongUniversity,Shanghai200240,China;2.MarineAquacultureResearchInstituteinZhejiangProvince,Wenzhou325005,China)Abstract:Aimedatthecharacteristicsofmarineaquaculturewastewater,likelargequantityofproduction,lowconcentrationsofnutrientsandhighsalinity.A/Obio-contactoxidationtechnologywasusedtotreatsimulativemarineaquaculturewastewater,andtheeffectsofhydraulicretentiontime(HRT)andvolumerefluxratio(R)ontreatmentefficiencywereemphaticallyresearched.Theresultsindicatedthatremovalefficiencyofnitrogenincreasedinthefirststage,andthendecreasedwhenHRTrangedfrom12～48handRrangedfrom50%～200%.UndertheoptimumoperationconditionofHRTwas24handRwas100%,theaverageremovalefficiencyofammonianitrogenandinorganicnitrogenreached92.9%and71.9%respectively.TheremovalofCODwashardlyrelatedtothetwofactors,andtheremovalefficiencyofCODcouldreach90%allthetime.TheresultsofwaterqualityverifiedA/O-BCOcouldapplytomarineaquaculturewastewatertreatment.Keywords:marineaquaculture;A/Obio-contactoxidation;HRT;refluxratio2mg/LNO3--NIN。C/N[15]。HRTDNCOD。COD/ρ(NO3--N)=3.3～5CODDOIN。DOCODIN。A/ONH4+-NIN。3A/O。HRT12～48hR50%～200%NH4+-NIN。HRT=24h、R=100%NH4+-NIN92.9%71.9%。CODDB33/453－2006。CODCODHRTR90%。[1],,,.[J].,2016(1):1-6.[2]FONTENOTQ,BONVILLAINC,KILGEN,Metal.Effectsoftemperature,salinity,andcarbon:nitrogenratioonsequencingbatchreactortreatingshrimpaquaculturewastewater[J].BioresourceTechnology,2007,98(9):1700-1703.[3],,,.[J].,2016(5):1-5.[4].[J].,2012,24(3):151-155.[5],,,.A/O[J].,2013,29(3)14-16.[6],,,.[J].,2008(1):1-4.[7],.[J].,2014(2):26-34.[8]4:GB17378.4－2007[8].[9]:DB33/453－2006[S].[10],,,.[J].,2010,30(8):1615-1621.[11],,,.[J].,2008,27(1):323-326.[12]RASOOLK,AHNDH,LEEDS.Simultaneousorganiccarbonandnitrogenremovalinananoxic-oxicactivatedsludgesystemundervariousoperatingconditions[J].BioresourceTechnology,2014,162C:373-378.[13]QIWK,GUOYL,SuLM,etal.Ananoxic/oxicsubmergedconstructedwetlandsprocessforwastewatertreatment:Modeling,simulationandevaluation[J].EcologicalEngineering,2014,67(2):206-215.[14]BAEZAJA,GABRIELD,LAFUENTEJ.Effectofinternalrecycleonthenitrogenremovalefficiencyofananaerobic/anoxic/oxic(A2/O)wastewatertreatmentplant(WWTP)[J].ProcessBiochemistry,2004,39(11):1615-1624.[15],,,.[J].,2011,38(3):11-17.438100