侧流化学磷回收强化生物除磷的模拟预测与试验验证

2911200911ActaScientiaeCircumstantiaeVo.l29,No.11Nov.,2009:(863)(No.2006AA06Z320);/0(No.BJE10016200611)SupportedbytheNationalHigh-TechR&DProgramofChina(No.2006AA06Z320)andtheFundingProjectforAcademicHumanResourcesDevelopmentinInstitutionsofHigherLearningUndertheJurisdictionofBeijingMunicipality(No.BJE10016200611):(1960)),,(),E-mai:[e-mail];*()Biography:HAOXiaodi(1960)),male,professor(Ph.D.),E-mai:[e-mail];*Correspondingauthor,,,.2009.[J].,29(11):2274-2281HaoXD,ZhangLP,HuYS,etal.2009.Modelingpredictionandexperimentalverificationofenhancingbio-phosphorusremovalbychemicalprecipitationofanaerobicdigestersupernatant[J].ActaScientiaeCircumstantiae,29(11):2274-2281郝晓地*,张璐平,胡沅胜,王克巍北京建筑工程学院可持续环境生物技术研发中心,北京100044:2009-02-06:2009-05-01:2009-08-07:,.,COD/P=37.5,30%,(pH9.0)TP6.0mg#L-1(P)[1.0mg#L-1(P),P64%.TUD.,.:;COD/P;;;;:0253-2468(2009)11-2274-08:X703:AModelingpredictionandexperimentalverificationofenhancingbio-phosphorusremovalbychemicalprecipitationofanaerobicdigestersupernatantHAOXiaodi*,ZHANGLuping,HUYuansheng,WANGKeweiTheR&DCentreforSustainableEnvironmentalBiotechnology,BeijingUniversityofCivilEngineeringandArchitecture,Beijing100044Received6February2009;receivedinrevisedform1May2009;accepted7August2009Abstract:Bymeansofmodelingpredictionandalab-scaleexperiment,wetestedbio-Premovalbychemica-lPprecipitationintheside-streamofanaerobicdigestersupernatant.BoththemodelingpredictionandtheexperimentalresultsindicatethatTPintheeffluentcouldbedecreasedto[1.0mg#L-1from6.0mg#L-1(intermsofP)atCOD/P=37.5bychemica-lPprecipitationwiththeside-streamratioat30%.Atthesametime,64%oftheinfluentPloadcouldberecovered.TheverifiedandcalibratedTUDmodelpredictedalmostthesameresultsasthoseobtainedfromtheexperiment.Therefore,modelingtechnologyisfullycapableofreplacingpilot-scaleexperimentsinthescale-upofbiologicalnutrientremoval(BNR)processes.Keywords:Bio-Premova;lCOD/P;anaerobicsupernatant;ratioofside-streamtoinfluent;chemica-lPprecipitation;modelingprediction1(Introduction)(BNR)(Haoetal.,2006).,:¹,;º,,(Elliottetal.,2007;Novaketal.,2007).,./(VFAs),;COD/P(COD/N),/.,,(CH4).,,,CH4(Elliottetal.,2007;Novaketal.,2007).11:/,,BNR.,COD/PCOD,COD/PP.BNRP..,P,COD.BNR.,BNR(40~50mg#L-1(P))(vanLoosdrechtetal.,1998;vanRensburgetal.,2003;Heinzmannetal.,2004).,.(P2O515%),100(Isherwood,2000);70(,2003).,/0/0.,BNR,COD/P,,(Gaterelletal.,2000;Kurodaetal.,2002;,2002).,/.BNR(BCFS)(Haoetal.,2006)(,2002),COD/P,COD/PP.,COD/PP,P.,,,,BNR.2/(Experimental/modelingmethodsandmaterials)2.1工艺流程BNRBCFS(,2003),0.45m3#d-1,1.(),/,/.,(,2008)./,(QS)(1),.1BCFS(Qin=18.75L#h-1,QA=37.5L#h-1,QB=46.99L#h-1,QC=0L#h-1,QRAS=18.75L#h-1,QS=kQinV(R1)=40L,V(R2)=6L,V(R3)=40L,V/(R4)=120L,V(R5)=120L,V=60L)Fig.1Schematicrepresentationofalab-scaleBCFSprocess2275292.2试验方法与分析项目,,1.COD(TP8mg#L-1(P))COD/P.COD=600mg#L-1,().(3000~4000mg#L-1)(SVI=100~130mL#g-1),COD,COD300mg#L-1./,3:10%20%30%,NaOHpH(9.0)(Ca2+310mg#L-1,Mg2+150mg#L-1)(,2009).1Table1ComponentsofInfluentWastewater/(mg#L-1)450L/gCOD150118.4167.66450435.99(C6H12O6#H2O)270261.60170164.71TP835.12KH2PO41565.85TNNH4Cl20.4178.0015.39118.418.8067.66KKCl10.3719.83EDTA3.00FeCl3#6H2O0.45H3BO30.05CuSO4#5H2O0.01KI0.05MnCl2#4H2O0.04Na2MoO4.2H2O0.02ZnSO4#7H2O0.04CoCl2#6H2O0.05:.SSVSS56(4)(,2002);.,SSVSSSVDOORP.SS103~105e;VSS550e;SV100mL30min;DOYSI1700;ORPWTWORP.CODTPPO3-4TNNH+4NO-3NO-2VFAs.COD;TP;PO3-4;TN;NH+4;NO-3;NO-2N)(1-));VFAspH.2.3试验条件与环境BCFSÓ,(SRT)30d.(DO),2~4mg#L-1;/DO0.5mg#L-1.(ORP),ORP-270~-300mV.27~30e.2.4模拟方法TUD(Smolders,1995a;Smoldersetal.,1995b;Kubaetal.,1996;Murnleitneetal.,1997;vanVeldhuizenetal.,1993)AQUASIM2.0(Reicher,t1998),(,2007a;2007b;2007c),1,.3(Modelingpredictionandexperimentalresults)3.1低COD/P比进水对出水P的影响,COD/P\50,,:TP=0.5mg#L-1(P)TN=10mg#L-1(N)COD=25mg#L-1.,.,COD/P50,COD..,COD/P37.5,SRT30d,(MLSS)COD3000~3500mg#L-1(MLVSS/MLSS=0.83),TP6mg#L-1.,(2).2.227611:2COD/P=37.5Table2ExperimentalandmodelingresultsatCOD/P=37.5mg#L-1CODTOTCODSTNNH+4NO-3TPPO3-429620346.538.91.99.77.9271913.30.412.96.15.4261613.70.213.05.95.4:TNNH+4NO-3N;TPPO3-4P.,/TUD,(22).,COD/P=37.5,,SRT,.,.,.2COD/P=37.5Fig.2ExperimentalresultsandmodelingpredictionalongthereactorsatCOD/P=37.53.2侧流厌氧上清液化学磷沉淀强化生物除磷3.1,.,.,,.COD/P=37.5,3.,.3.2.1模拟预测3CODNH+4NO-3PO3-43.3,COD;(30%),NO-3,NH+4;TNNO-3;,,PO3-4,30%,PO3-41mg#L-1(P).2277293Fig.3Predictedchangesofsupernatantsinthereactorsandeffluents3.2.2试验结果,34.4,4Fig.4Experimentalresultsofthereactorsandeffluentsatdifferentside-streamratios227811:,COD,95%,COD22mg#L-1;NH+4NO-3PO3-4.(3b3c),20%30%,NH+4/NO-3R4(/)(4b4c).,NH+4NO-3R4,R4,R4(DO=0.5mg#L-1).,NH+4NO-3R4.DODO,,(DO=0.5~0.8mg#L-1)(DO=0.1~0.2mg#L-1)DO.R4DO,.4(Discussion)BNR,.4.1化学磷沉淀强化生物除磷作用,COD/P37.5,TN(32c),13mg#L-1,TP(COD/P\50)[1.0mg#L-16.0mg#L-1(P),PO3-4510mg#L-1(4d).,.,.PO3-4,COD/P,(COD),().34,,PO3-4,30%1.0mg#L-1.,BNRCOD/P,.4.2化学磷沉淀可行性及磷回收效率,.,.,BNR.,()..,PO3-4(Mg2+Ca2+Al3+),pH.,Mg2+Ca2+(),,pH9.0,PO3-4(,2009).,PO3-416~18mg#L-1,30minPO3-40.5~3mg#L-1().,30%,PO3-4,,P64%..4.3数学模拟代替中试试验可行性234,,95%.,TUDBNR,.,.,SHARONANAMMOX(,2002a;2002b).,(,2007d).5(Conclusi