国产轻质球型陶粒用于曝气生物滤池的研究江萍

:0253-2468(2002)-04-0459-06　　　:X701.3　　　:A江　萍1,胡九成2　(1.,　510405;2.):(BAF).,,,,.,BOD90%,NH3-N80%,BOD6—10kg(BOD)(m3·d),BAF.COD、BAF.:;;;ResearchonthehomemadelightgranularceramicsusedinBAFJIANGPing1,HUJiucheng2　(1.CivilandEnvironmentalEngineeringDepartment,GuangzhouUniversity,Guangzhou　510405;2.-EnvironmentalandChemicalEngineeringInstitute,NanchangUniversity,Nanchang　330029)Abstract:Thephysicalandchemicalpropertiesofhomemadelightgranularceramicsandtheeffectsofthedomesticseweragetreatmentbybio-logicalaeratedfilter(BAF)werestudied.Therewasagreatdealofsessilemicrobeonthesurfaceoftheceramics.Theceramicshavesomeadvantages:fastmembraneformation,longliveandgoodoxygen-chargingcapacity.Whentheceramicswereusedinthetreatmentofdomesticsewerage,theremovalofBOD,theremovalofNH3-NandtheBODloadingwere90%,80%and6—10kg(BOD)(m3·d),respectively.TheceramicscanbeusedasmicrobialfilterofBAF.TherelationshipsbetweenremovalofCODandfilterheight,reactionkineticsandtechno-logicalconditionsofBAFwerealsodetermined.Keywords:lightgranularceramics;biologicalaeratedfilter;oxygen-chargingcapacity,kinetics:2001-07-06;:2001-10-01:　(1976—),,(BiologicalAeratedFilter,BAF)2080,,.SS、COD、BOD、、、[1—7].BAF,BAF[8],.BAF.1　(BOD∶N∶P=100∶5∶1),CNN.90mm,1m,21.53L3.06L,1.3m,、,().[9],COD(COD70%),(20—25℃10d).,CODNH3-N.[10],(HRT)(GL),HRTGL22420027　　　　　ACTASCIENTIAECIRCUMSTANTIAEVol.22,No.4Jul.,2002DOI:10.13671/j.hjkxxb.2002.04.0093d.,,,,1—2d.:CODCr(GB11914-89);BOD5GB7488-87;NH3-N(GB7479-87);DO(GB7489-87),(SJG-203).2　2.1　2.1.1　　,(),,.,,BAF(1).1　BAFTable1　ThepropertiesoflightgranularceramicsandtheoverseasfillersinBAF,mm,gcm3,gcm3,%　,　%,m2gm2m3,%,%Ahita()3.5—6.21.550.880.050.33.98—5.51.4OldES()2.1—3.91.9—0.080.340.83—6.50.353—61.670.790.090.44.11834.310.222.1.2　　(SEM)BAF,1—3.1,,,.2,,1,.3.1　(×1000)Fig.1　Thesectionoftheceramics(×1000)2　(×500)Fig.2　Thesectionoftheceramicswithgrownmicrobe(×500)3　(×3000)Fig.3　Thesectionoftheceramicswithgrownmicrobe(×3000)　　,、、、、、、,、,BAF.2.2　460　　　　　　　　　　22BAF、,,4　DOtFig4　RelationshipbetweenDOandtunderdifferentairflowrates.,.,,(DO),,0.5—1minDO,DO[10].,4.dcdt=KLa(Cs-C)(1),dcdt———,mg(L·h);KLa———,h-1;CCs,;Cs———,mgL;C———t,mgL.2　Table2　KLafortheemptyreactorandtheBAF,Lh1005025KLa(),h-118.2613.178.45KLa(),h-147.5125.1017.18KLa()/KLa()2.61.92.0(1):∫C0dCCs-C=KLa∫t0dt(2)lnCsCs-C=KLat(3)lnCsCs-C=KLatt,KLa,KLa(2).　　,,,.,,,,,;,,,,,KLaDO,.,KLa,:①,,,,;②,,;③,,,.,(BAF),,,.2.3　3,CODCN,CN(H2)COD70%,NH3-N20%,NNH3-N80%,NH3-NN.BAF:CN,N.4614　:3　Table3　Influenceofthefillerhighnessoneffectofthetreatment,mCNN0.37(H1)0.635(H2)0.99(H3)1.255(H4)COD,mgL233.1121.868.923.315.9COD,%47.7070.4090.0093.20NH3-N,mgL24.121.318.7312.044.79NH3-N,%11.6322.2050.0080.00　　,,(),:dSdH=-KS(4)SS0=e-KH(5),K,K=K′Sm0(QA)n(6)SS0=e-K′Sm0QAnH(7),dSdH,mg(L·m);S0,mgL;S,mgL;H,m;Q,m3d;A,m2;K′、;m;n、.:H=ln(S0S)K′Sm0(QA)n(8)　ln(SS0)=-K′Sm0(QA)nH(9)　　(9),(6)n=-0.1374,m=-0.1352,K′=10.233,(6),K=10.233S-0.13520(QA)-0.1374(10)　　,COD:H=[lnS0S][10.233S-0.13520(QA)-0.1374](11)　　(10),BAF,,BAF.(11).,,,,,3.2.4　4　(GL=5)Table4　InfluenceofHRTontheeffectoftreatmentHRT,min,m3(m2·h)COD,mgLCOD,mgLCOD,%CODBOD,kg(m3·d)3.59.431228.6101.0455.860.0557.314.47.545218.085.0261.050.0346.456.25.344211.674.4864.836.5933.328.43.930191.455.3171.126.6923.6015.02.201255.022.7091.125.3621.6621.01.572255.213.5394.718.7715.9728.01.179250.013.5094.613.9111.7242.00.786250.010.7595.79.397.88　　4,42min21min,,;3.5min,,,COD55%.,15—21min,(1.6—2.2m3(m2·h)).462　　　　　　　　　　225　CODBODFig.5　InfluenceoftheratioofgastoliquidontheCODremovierateandBODloading2.5　1.6m3(m2·h),COD380—480mgL(BOD248—314mgL),(GL)CODBOD,5.,GL,COD;GL8,;GL10,COD,.,,51—101.2.6　Monod[11]:　　U=(Umax·Se)(Ks+Se)(12),U,g(m2·d),:U=Q(S0-Se)Na,Q,m3d;S0mgL;Se,mgL;Umax,g(m2·d);Ks,U=Umax2,mgL;N:,m3;a:,m2m3.BOD5500mgL,SeKs,K=UmaxKs,(12):U=K·Se(13).5.5　BOD5Table5　Resultsofkineticsexperimentanddataprocessing,m3dS0,mgLSe,mgLQ(S0-Se),gd,m2U,g(m2·d)1U,(m2·d)g1SeLmgLv,kg(BOD)(m3·d),%10.18080.995.6713.562.5535.310.18830.17644.4393.020.24082.437.6117.962.5537.030.14220.13145.8790.830.240183.1319.6439.242.55315.370.06510.050912.8289.340.336207.2025.3461.102.55323.930.04170.039519.9787.850.576180.3042.5379.362.55331.080.03220.023525.9376.460.720166.6439.6491.442.55335.820.02790.025229.8876.26　1U1SeFig.6　Relationshipbetween1Uand1(S0-Se)　　(12),:1U=KsUmax·1Se+1Umax(14)1U1Se,KsUmax,1Umax,6.,Umax=185.2g(m2·d),Lvmax=Umax·a=185.2×834.3=154.5kg(BOD)(m3·d),KsUmax=1.041,Ks=1.041,Umax=192.78mgL.,BAF(BOD):U=Umax·(Se-Sn)Ks+(Se-Sn)=185.2(Se-Sn)192.78+(Se-Sn)(g(m2·d))　　BOD≥90%,BOD10mgL4634　:,BOD6—10kg(BOD)(m3·d),1—3.5kg(BOD)(m3·d).3　1.,,,,,,(),,,.2.BAF,2.3.BAF,1.6m3(m2·h),5∶1,COD85%,BOD90%,NH3-N80%,6—10kg(BOD)(m3·d).:[1]　PujolR,etal.Akeypointofnitrificationinanupflowbiofiltrationreaction[J].WatSciTech,1998,38(3):43—49[2]　FrankRogalla,etal.Newdevelopmentincompletenitrogenremovalwithbiologicalaeratedfilters[J].WatSciTech,1990,22(12):273—280[3]　SeguretF,etal.Hydrodynamicbehaviorofafull-scalesubmergedbiofilteranditspossibleinfluenceonperformances[J].WatSciTech,1998,38(8—9):249—256[4]　ChudobaP,etal.Athree-stagebioformance