EGSB反应器中实现完全自营养脱氮与运行优化任宏洋

EGSB1,2,1,3＊,1(1.,　400030;2.,　610500;3.,　400030):EGSB,,0.101kg·(m3·d)-1.,、,,.EGSB,52%61%,0.103kg·(m3·d)-10.114kg·(m3·d)-1.:;;;:X703.1　:A　:0250-3301(2009)05-1454-07:2008-06-03;:2008-08-30:(50378094):(1980～),,,,E-mail:[e-mail]＊,E-mail:[e-mail]utotrophicNitrogenRemovalinEGSBReactorandItsOperationOptimizationRENHong-yang1,2,ZHANGDai-jun1,3,CONGLi-ying1(1.DepartmentofEnvironmentalScience,ChongqingUniversity,Chongqing400030,China;2.SchoolofChemistryandChemicalEngineering,SouthwestPetroleumUniversity,Chengdu610500,China;3.KeyLaboratoryforExploitationofSouthwestChinaResources&EnvironmentalDisasterControlEngineering,MinistryofEducation,ChongqingUniversity,Chongqing400030,China)Abstract:Anexpandedgranularsludgebed(EGSB)reactorinoculatedsimultaneouslywithaerobicammoniumoxidationsludgeandanaerobicammoniumoxidationsludgewerestart-uptoenrichcompletelyautotrophicnitrogenremovalgranularsludge.Totalnitrogen(TN)removalratereached0.101kg·(m3·d)-1.Basedonhypothesisofboundarylayer,thetransferprocessbetweengranularsludgeandbulkliquidwasmodified,whichwascoupledwithsubstancetransferprocessingranularsludgeandaerobicammoniumoxidation,anaerobicammoniumoxidation,nitriteoxidationprocess,andcompletelyautotrophicnitrogenremovalmodelwasfound.Themodelwasvalidatedwiththeexperimentalresults.Accordingtosimulationresults,theoperationofthereactorwasoptimized,TNremovalefficiencyandTNremovalratewereincreasedfrom52%to61%and0.103kg·(m3·d)-1to0.114kg·(m3·d)-1respectively.Keywords:completelyautotrophicnitrogenremoval;aerobicammoniumoxidation;ANAMMOX;granularsludge　　,NH+4NO-3,,NO-3N2.Hippen[1],,.,.DelftCANON,85%[2].[3],.Koch[4]Hao[5,6].(expandedgranularsludgebed,EGSB)3,,.EGSB,,,;,EGSB,,EGSB.1　1.1　EGSB,2.7L,1.0m,1.5L,,30520095　　　　　　ENVIRONMENTALSCIENCEVol.30,No.5May,2009DOI:10.13227/j.hjkx.2009.05.030(1).[7]3.2g(MLSS)[8]8.6g.2,1,,,1,2L,0.5h,21.5h,1.5h,0.5h,10.8L·h-1.3d,(PAM),,4d.DO,DO0.7～0.8mg·L-1,(30±1)℃,pH7.6～8.0.2,0.3L·h-1,、、DOpH.1.;2.;3.;4.;5.;6.;7.pH;8.;9.;10.;11.1　Fig.1　Schematicdiagramofexperimentalsetup(NH4)2SO4,NaHCO3.1L1mL,(g·L-1):ZnSO4·7H2O,2.2;CoCl2·6H2O,1.6;FeSO4·7H2O,5.0;CaCl2·2H2O,5.5;MnCl2·4H2O,5.0;CuSO4·5H2O,1.6;MgSO4·7H2O,5.0;(NH4)6Mo7O24·4H2O,1.1;NiSO4.6H2O,0.42;EDTA,5.0.1.2　NO-2:N-(1-)-;NH+4:;NO-3:;pH:pH(PB-10,Sartorius);DO:MettlerToledoInPro6050120(-).2　EGSB:①,、、,;②DO,;③NH+4、NO-2、NO-3N2;④.O2,NH+4NO-2,NH+4NO-2N2.,,,(1)[9]:d2﹒Sd﹒z2+2﹒zd﹒Sd﹒z=1Df·r(1),﹒S;Df,m2·s-1;﹒z;r.:d﹒Sd﹒z﹒z=0=0,﹒S(﹒z=1)=1(1),,DO0.7～0.8mg·L-1,﹒z=0.85DO0.1mg·L-1.0.5mm,0～0.42mm,0.08mm,.,iλi.S＊i=λi·Si,s(2),Si,si,mg·L-1;S＊ii,mg·L-1.[10]:Wi,w=ki,w(Si,b-Si,s)(3),ki,wi,m·s-1;Si,bi,mg·L-1.kw、,(Sh)、(Sc)(Re)3.ki,w=DidpSh(4)14555:EGSB,dp,m;Di,m2·s-1.Sh=Sc13·Re·JD(5)　　ColburnJD:JD=1·0.765Re0.82+0.365Re0.386(6),.iηi.Si,s=ηi·Si,b(7)　　,(8).ki,w·(Si,b-ηi·Si,b)·α=ri(8),α,m2·m-3.,.μAOB=μmax,AOBSNH+4KS,NH+4,AOB+SNH+4·SOKS,O,AOB+SO·SALKKALK,AOB+SALKXAOB(9)μNOB=μmax,NOBSNO-2KS,NO-2,NOB+SNO-2·SOKS,O,NOB+SOXNOB(10)　　,[11]:μAnAOB=β·μmax,AnAOB·SNH+4KS,NH+4,AnAOB+SNH+4+S2NH+4KI,NH+4,AnAOB·SNO-2KS,NO-2,AnAOB+SNO-2+S2NO-2KI,NO-2,AnAOB·KI,O,AnAOBKI,O,AnAOB+SOXAnAOB(11)　　,,.[12].μ=bSOKS,O+SOX(12)μA=bAKS,OKS,O+SO·SNO-3KS,NO-3+SNO-3X(13),AOB、AnAOB、NOB、、;X,mg·L-1;KS,NH+4、KS,O、KS,NO-2、KS,NO-3、、、,mg·L-1;KALK,mmol·L-1;KI,NH+4、KI,O、KI,NO-2、、,mg·L-1;β;μmax,d-1;SNO-3、SNO-2、SO、SNH+4、、,mg·L-1;SALKHCO-3,mmol·L-1;b、bA,d-1.(1)[4～6,8],i:ri=∑9j=1υj,i·μj(14),υj,iij;μjj.,、,(2)[12].(ThOD),HCO-3,.,υj,i(15).∑10i=1υj,i·lk,i=0(15),lk,i.2Y,mg·mg-1;iN,B,mg·mg-1.1　Table1　StoichiometricmatrixofcompletelyautotrophicnitrogenremovalSOSNO-3SNH+4SN2SNO-2SALKXNOBXAOBXAnAOBXIAOBυ1,1υ1,31YAOBυ1,61AOBυ2,1υ2,3υ2,6-1fIAOBυ3,4υ3,3υ3,4υ3,6-1fINOBυ4,11YNOB-iN,Bυ4,5υ4,61NOBυ5,1υ5,3υ5,6-1fINOB-υ6,4υ6,3υ6,4υ6,6-1fIAnAOB11.14υ7,3υ7,4-1YAnAOB+(-11.14)υ7,61AnAOBυ8,1υ8,3υ8,6-1fIAnAOB-υ9,4υ9,3υ9,4υ9,6-1fI1456　　　　　　302　Table2　ComponentmatrixofcompletelyautotrophicnitrogenremovalSOSNO-3SNH+4SN2SNO-2SALKXNOBXAOBXAnAOBXIThODg-1-4.57-1.71-3.431111Ng1111iN,BiN,BiN,BiN,Imol-114114-114-1　　EGSB,,EGSB,,、.nn-1,,n:Vn·dSi,ndt=(Qin+Qre)·Si,n-1-(Qin+Qre)·Si,n-ri,n·Vn　(　16)　　1:V1·dSi,1dt=(Qin·Si,in+Qre·Si,out)-(Qin+Qre)·Si,1-ri,1·V1　(　17),Si,nin,mg·L-1;ri,nin,mg·(L·d)-1;Si,in、Si,out、i,mg·L-1;Qin、Qre,L·d-1.3　3.1　EGSBEGSB2.,,,.DO,,12d,,,50d,NH+4-N75%56%,.、,,3.,52%,0.101kg·(m3·d)-1.,,,0.8～1.0mm,7.9g·L-1.3.2　EGSBEGSB2　Fig.2　Nitrogenconcentrationinsequenceoperatingmode3　Fig.3　Nitrogenconcentrationincontinuousoperatingmode,.,(16)、(17)4.9、3.61.1m·h-1(4)..4.9m·h-1,0.108kg·(m3·d)-1,1.1m·h-10.098kg·(m3·d)-1,10.2%.14575:EGSB.,,.5.5～6m·h-1,,.,4.5～5m·h-1.3.3　DOEGSB4　Fig.4　Nitrogenconcentrationalongwiththereactorindifferentup-velocity　　4.5m·h-1,,EGSB.V·dSidt=Qin·Si,in-Qout·Si,out-ri·V　　(18),Sii,mg·L-1;rii,mg·(L·d)-1;V,L.:dSidt=0Qin·Si,in-Qout·Si,outV-ri=0(19)　　,(18)DO,5,DO0.5～0.6mg·L-1,,63.1%.,DO0.7～0.8mg·L-10.5～0.6mg·L-1,,,,10～12mg·L-13～5mg·L-1(6),52%61%,63.1%.,8.2g·L-1,0.103kg·(m3·d)-10.114kg·(m3·d)-1.4　,5　Fig.5　NitrogenconcentrationunderdifferentDOwhenreactorcomingtosteady.Sliekers[2],0.064kg·(m3·d)-1.Third[13],0.08kg·(m3·d)-1.