改良模糊综合评价法在水质评价中的应用傅金祥

27920079　　　　　　ActaScientiaeCircumstantiaeVol.27,No.9Sep.,2007:(1971—),,(),E-mail:[e-mail];＊()Biography:XUGaotian(1971—),male,associateprofessor(Ph.D.),E-mail:[e-mail];＊Correspondingauthor,,,.2007.TiO2-SBR[J].,27(9):1444-1450XuGT,XiaoH,ZengX,etal.2007.DyestuffwastewatertreatmentbycombinedphotocatalysisandSBR[J].ActaScientiaeCircumstantiae,27(9):1444-1450TiO2-SBR徐高田＊,校华,曾旭,徐静上海大学环境科学与工程系,上海200072:2006-09-05　　　:2007-03-15　　　:2007-05-15:“TiO2-SBR”.“TiO2-SBR”,TiO2.、pH(DO),1000、pH8.0、4.0mg·L-1;SBR,2.5h、1h.,、CODCrBOD590%、85%94%.:;;SBR:0253-2468(2007)09-1444-07　　　:X703　　　:ADyestuffwastewatertreatmentbycombinedphotocatalysisandSBRXUGaotian＊,XIAOHua,ZENGXu,XUJingDepartmentofEnvironmentScienceandEngineering,ShanghaiUniversity,Shanghai200072Received5September2006;　　　receivedinrevisedform15March2007;　　　accepted15May2007Abstract:TiO2photocatalystsandSBRcombinedtechnologywereappliedtotreatdyestuffwastewater.ThecatalystwasapolyhedralballofpolypropylenetowhichTiO2waschemicallycoupled.Inthephotocatalyticstage,anorthogonalexperimentwasdesignedtoaddressdifferentfactorssuchasdosagesofphotocatalyst,pHvalues,andDOvaluesofthewastewater.Theexperimentalresultsshowthattheoptimaloperatingparametersforphotocatalytictreatmentwere1000unitsofcatalyst,pH8.0andDO4.0mg·L-1.IntheSBRstage,theeffectsofaerationandsedimentationtimeonthetreatmentofdyestuffwastewaterwereinvestigatedandoptimizedatanaerationtimeof2.5handadepositiontimeof1h.Theremovalratesofcolor,CODCrandBOD5intheultimateoutletwaterwere90%,85%and94%,respectively.Keywords:dyestuffwastewater;photocatalytictechnology;SBR1　(Introduction)、、、,(,2002;,2003;,2004).、3.、,.,、(,2003;,1999).TiO2(Eq=3.2eV)、、、(,2002),TiO2、、、,,,(VorontsonAVetal,2001).SBR(,2001).TiO2SBR,、,,SBRCODCr,,.DOI:10.13671/j.hjkxxb.2007.09.0079:TiO2-SBR,,、、、(,2000;,1998).,.TiO2,“TiO2-SBR”(,:200520041583.9).TiO2“TiO2-SBR”;,,,.2　(Materialsandmethods)2.1实验装置及仪器2.1.1实验装置　1.AB:A,BSBR.TiO2A,,SBR.:400mm×400mm×800mm,120L;SBR:800mm×400mm×800mm,240L.1　(A.TiO2,B.SBR,L1.,L2.,L3.,L4.,L5.,L6.,L7.,F1.,F2.,1.,2.,3.,4.,5.,6.TiO2,7.,8.,9.,10.)Fig.1　Diagramofthephotocatalysis/SBRsystem(A.equipmentofPhotocatalytic,B.equipmentofSBR,L1.infallpipe,L2.aerationpipe,L3.outfallpipe,L4.losspipe,L5.samplingpipe,L6.overflowpipe,L7.losspipe,F1.liquidFlowmeter,F2.airFlowmeter,1.infallpumping,2.aerationpumping,3.blender,4.governor,5.valve,6.TiO2filling,7.aerationmeatus,8.lightofultravioletradiation,9.decanter,10.controllerofoutfalllowest)2.1.2　光催化反应的试验器材　TiO2,,,TiO2.4,30W,4×30W.NDZ-102,,KR-12(Kenrich).,38mm、325m2·m-3、91%、83kg·m-3.TiO2CYC-1TiO2;TEM2.TiO2:TiO2,TiO2;(1∶1)1445　　　　　　　　　　272　CYCTEMFig.2　TEMimageofCYCproduct;TiO2,;(80℃)2h,TiO2.,0.137gTiO2,TiO2,,,,3.3　TiO2Fig.3　SupportsfornanoTiO22.1.3　SBR反应阶段的实验条件　SBR100L,.:,3d20%,,.,1,SBR.,,,,SBR.1.1　SBRTable1　ParametersoftheSBRreactorSVMLSS/(mg·L-1)MLVSS/(mg·L-1)SVI21%32802560642.2　废水水质情况,,,、、.:CODCr460～580mg·L-1,BOD5120～180mg·L-1,SS80～110mg·L-1,300～400,pH8.8～9.1.2.3检测指标和方法5,(BOD5)、(CODCr)、、SS(《》,2002)、pH.2.2　Table2　Analysesofwaterquality(BOD5)GB7488(CODCr)GB11914GB11903pHGB6920SSGB11901-892.4　实验方法2.4.1　光催化实验设计　,.,,,,().,、,,,.2,4×30W,4,120min.,、pH、3,L9(34),14469:TiO2-SBR.3L9(34).3.3　L9(34)Table3　Orthogonaldatatable(A)/pH(B)(C)/(mg·L-1)19006.03.029007.04.039008.05.0410006.04.0510007.05.0610008.03.0711006.05.0811007.03.0911008.04.02.4.2　SBR工艺的实验设计　SBR,、、、.,,,SBR;,、.,SBR.3　(Results)3.1光催化处理实验结果、pH、3,4,、pH、R4.75、1.82、1.90.,3、pH、,CODCrpH,pH.3,137g(1000),pH8.04.0mg·L-1,,CODCr,.4.4　Table4ParametersfortheobjectofcolorandCODCr/pH/(mg·L-1)CODCr+CODCr1A1B1C168.92%34.78%103.70%2A1B2C270.83%34.92%105.75%3A1B3C371.35%35.91%107.26%4A2B1C272.16%36.46%108.62%5A2B2C371.17%36.57%107.74%6A2B3C172.68%35.65%108.33%7A3B1C367.13%36.69%103.82%8A3B2C167.35%34.28%101.63%9A3B3C269.95%35.05%105.00%K1316.71316.14313.66K2324.69315.12319.37K3310.45320.59318.82K1105.57105.38104.55K2108.23105.04106.46K3103.48106.86106.27A2B3C2R4.751.821.90R1R3R2:Ki;Ki=Ki/3;R=max[Ki]-min[Ki]3.2　SBR生物后续处理实验结果SBR,4.,,CODCr,2.50～2.75h,.CODCr2h75.3%2.5h82.1%,.1447　　　　　　　　　　274　Fig.4　ResultsofSBRreactorwithdifferentaerationtime　　SBR,,5.,,CODCr,1～1.25h,.CODCr0.5h76.1%1h83.6%,.5　Fig.5　ResultsofSBRreactorwithdifferentdepositiontime3.3　组合工艺的处理效果(1996)SBR,70%COD80%BOD5、80%.,,5.5　Table5　ResultsoftreatmentbythecombinedprocessesBOD5/(mg·L-1)/(mg·L-1)CODCr/(mg·L-1)/(mg·L-1)/(mg·L-1)/(mg·L-1)SS/(mg·L-1)/(mg·L-1)15213113.82%49831636.55%35010071.43%855930.59%SBR13118.7385.70%31672.6077.03%10035.0065.00%5936.0039.00%87.68%85.42%90.00%57.64%　　5,,B/C,,;CODCr、BOD5,SBR,,90%,CODCr85%,SBR,.4　(Discussion)4.1　光催化预处理实验结果分析(e-)(h+),e-O2H2O2,、OH-·OH,H2O2·OHCO2H2O,(,2003).,,,TiO2·OH,;,,TiO2.O2,,O-2,·OH,O2.pHTiO2,TiO2:-Ti-OH+H+-Ti-OH+2(1)-Ti-O-+H+-Ti-OH(2),pH14489:TiO2-SBR,·OH,,pH.OH-h-Pvb(h-Pvb+OH※·OH),4·OH※2H2O+O2(RiveraAetal.,1993).pHTiO2“”,pH3.5·OHO-2,(,1997).,pH,SBR,pH,,3pH,,pH8.0,.4.2SBR生物后续处理实验结果分析SBR,CODCr.SBR,,,,(),(Aroraetal,1985)..5　(Conclusions)1)TiO2,,、pH、137g(1000)、8.0、4.0mg·L-1,,CODCr35%,70%.2)SBR,2.5h、1h,CODCr100mg·L-1,40,SS70mg·L-1.　3)TiO2.、CODCrBOD590%、85%9