除有机物除磷系统中好氧反应时间参数优化徐竹兵

461()Vol.46No.120151JournalofCentralSouthUniversity(ScienceandTechnology)Jan.2015DOI:10.11817/j.issn.1672−7207.2015.01.050121111(1.,1001242.,710024)(tAHR)40~60min-β-(PHA)30mintAHR=40minX703.1A1672−7207(2015)01−0372−07OptimizationparameterofaerobichydraulicretentiontimeinorganicmatterandphosphateremovalsystemXUZhubing1,ZHOUYaxu2,WANGShuying1,TANGXiaoxue1,YANGXiong1,PENGYongzhen1(1.EngineeringResearchCenterofBeijing,KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China;2.Xi’anWastewaterTreatmentCompany,Xi’an710024,China)Abstract:Theadsorptionperformanceoforganicmatterandphosphateandthestabilityoftheorganicmatterandphosphateremovalsystemwereinvestigatedunderdifferentaerobichydraulicretentiontime(tAHR)usingasequencebatchreactor(SBR).Theresultsshowthatthesystemhasstrongadsorptionperformanceoforganicmatterandphosphateandtheactivatedsludgeexhibitgoodsettle-abilitywhentheaerobichydraulicretentiontimeis40−60minwhilethepoly-hydroxyalkanoate(PHA)andcarboncontentinsludgeincreasewiththereductionofaerobichydraulicretentiontime.However,theadsorptionpropertiessignificantlydeteriorateandseriousnon-filamentoussludgebulkingoccurwhentheaerobichydraulicretentiontimeof30minisemployed.Consequently,theaerobichydraulicretentiontimeof30minisnotsuitableforlong-termoperation.Inconsiderationoftheadsorptionproperty,thepotentialofresourcerecoveryandthestabilityofthesystem,theaerobichydraulicretentiontimeof40minisrecommendedtobetheoptimalaerobichydraulicretentiontimeforthelong-termoperationoftheorganicmatterandphosphateadsorptionsystem.Keywords:aerobichydraulicretentiontime;adsorption;organicmatter;phosphate;domesticwastewater2014−02−272014−04−12(Foundationitem)(51178007)(2014)(ykj-2012-8308)(Project(51178007)supportedbytheNationalNaturalScienceFoundationofChina;Project(2014)supportedbyScienceandTechnologyInnovationPlatformofBeijingEducationBoard;Project(ykj-2012-8308)supportedbyScienceandTechnologyFundforBeijingUniversityofTechnologyGraduate)E-mail:[e-mail]1373[1−3]−60%[4−5][6]()[4,7][8−9][10−11](EPS)[10](tAHR)11.1(SBR)SBR8L1SBRWTWMulti340ipH/DOpH(DO)(25±1)2d200L/hSBR4L4L75~90min10min10min30min10min30min(0~28d)25min(29~59d)20min(60~100d)15min(101~139d)1Fig.1Schematicdiagramofexperimentalsystem1.2()463741A2/O[12]1()Table1Characteristicsofdomesticwastewatermg/LCODNH4+-NNO2−-NNO3−-NP230~30045~900~0.30~0.45.0~7.01.3NH4+-NNO2−-NNO3−-NPO43−-PLACHAT−8500COD5B−3(A)CODpHDOWTW-Multi340iTCElementar(VarioTOC)MLSS-β-(PHA)[13](EPS)[14]folin-[15]0.45μm22.12[11,16]2(a)2(a)COD230~270mg/L60504030minCOD(89±3)(96±4)(101±3)(120±2)mg/LCOD66%64%62%53%60min40minCOD10%COD4%40min30minCOD20%COD10%40~60min30min[17]PHAPHA2(b)50min60min(a)(b)1COD2COD3COD4P5P6P2Fig.2Removalperformanceoforganicmatterandphosphatefordifferentaerobichydraulicretentiontime1375(0.28±0.1)mg/L(0.39±0.1)mg/L96%94%40min(0.58±0.2)mg/L90%30min(1.6±0.4)mg/L70%40~60min2.2COD33COD405060minCODCOD88%(3(a)~(c))30minCOD75%(3(d))40~60min30min30min30min405060min30min330405060min20mg/L60504030min(PO43−-P)1312118mg/(L·h)/min(a)60(b)50(c)40(d)301COD;2NH4+-N;3P3CODPNH4+-NFig.3VariationconcentrationsofCOD,PandNH4+-Nintypicalcyclefordifferentaerobichydraulicretentiontime()4637640~60min20min0.6mg/L30min30%1.3mg/LNO2−-NNO3−-N(NO2−-NNO3−-N0.5mg/L)NH4+-N60504030minNH4+-N5.15.04.54.0mg/LNH4+-N4NH4+-N()2.34(a)405060min(SVI)50mL/g(MLSS)2200~2500mg/L30minSVI20d400mL/gMLSS1300mg/L[18]4(b)EPS30minEPS(VSS)28.4mg/g60min3.5EPSSponza[19]EPS4(b)60min30minEPS76%35%30minEPS[19]EPSEPS60min30minMLSS(COD)0.6kg/d1.7kg/d(a)SVI(b)EPS4MLSSSVIEPSFig.4VariationofmassconcentrationofMLSS,SVIandEPSfordifferentaerobichydraulicretentiontimeinsystem137730min2.4PHAPHA()PHAPHA560504030minPHA(COD)(71.5±1.9)(80.2±1.2)(90.3±1.5)(95.5±1.3)mg/gPHAPHAPHAPHA50min60minPHA(0.1mg/L0.2mg/L)PHA40min10%~20%30minPHA405060minPHA405060min49.6%±2.4%40.8%±1.1%34.5%±1.0%30min47.2%40min40minPHAtAHR=40min5PHAFig.5VariationofPHAandcarboncontentfordifferentaerobichydraulicretentiontime31)40~60min30min2)40~60min50mL/g30min20d400mL/g(VSS)3mg/g17.52mg/g3)40minPHA30min40min4)tAHR=40min[1]KuenenJG.Anammoxbacteria:Fromdiscoveryto()46378application[J].NatureReviewsMicrobiology,2008,6(4):320−326.[2]SiegristH,SalzgeberD,EugsterJ,etal.AnammoxbringsWWTPclosertoenergyautarkyduetoincreasedbiogasproductionandreducedaerationenergyforN-removal[J].WaterScienceandTechnology,2008,57(3):383−388.[3]FurukawaK,InatomiY,QiaoS,etal.Innovativetreatmentsystemfordigesterliquorusinganammoxprocess[J].BioresourceTechnology,2009,100(22):5437−5443.[4]KartalB,KuenenJG,vanLoosdrechtMCM.Sewagetreatmentwithanammox[J].Science,2010,328(5979):702−703.[5]MABin,PENGYongzhen,ZHANGShujun,etal.PerformanceofanammoxUASBreactortreatinglowstrengthwastewaterundermoderateandlowtemperatures[J].BioresourceTechnology,2013,129:606−611.[6],,,.[J].,2013,64(8):3017−3022.TANGXiaoxue,WANGChuanxin,XUZhubing,etal.Recoveryofphosphorusandorganicmatterinanautotrophicdenitrificationsystem[J].JournalofChemicalIndustryandEngineering(China),2013,64(8