SBR法处理工业废水中有机负荷对污泥膨胀的影响

:0253-2468(2000)-02-0129-05　　　:X703　　　:ASBR王淑莹,高春娣,彭永臻,周　利,丁　峰　(,　150090):.,,:(DO),,;,DO,DO..:;;;;InfluenceoforganicloadingonsludgebulkingWANGShuying,GAOChundi,PENGYongzhen,ZHOULi,DINGFeng　(CollegeofMunicipalandEnviron-mentalEngineering,HarbinUniversityofArchitectureandEngineering,Harbin150008)Abstract:Intheactivatedsludgeprocess,thecharacterofactivatedsludgewillbechangedbycompetitivegrowthoffloc-formingbacteriaandfilamentousbacteria.Therearetwodifferentargumentsabouttheeffectoforganicloadingonsludgebulkingalllong,thereforewehavehadspecificresearchonit.Theexperimentalresultshowsthatifloworganicloadingconditioncanbemaintained,bulkingwilloccur,howeverthebulkingwillbecontrolledeffectivelyinthecondi-tionofincreasingorganicloading.Underhighorganicloadingcondition,usually,theowingtotheinsufficientDO,bulk-ingmayoccur,but,ifDOconcentrationisincreased,bulkingwillbecontrolled.Inaddition,theresultexplainstherea-sonwhysludgebulkingoccursathighorganicloading..Keywords:Organicloading;sludgebulking;DO;filamentousbecteria;floc-formingbacteria:1998-11-28;:1999-05-04:(59778024):(1955—),,1　,(SVI),,,(MLSS),[1].Sezginetal.[2]、.(107μm/mg())(SVI150mL/g);..,95%,.,,20220003　　　　　ACTASCIENTIAECIRCUMSTANTIAEVol.20,No.2Mar.,2000DOI:10.13671/j.hjkxxb.2000.02.001,.[3],[4].FordEckenfeilder[5],;Palm[6],DO;Chudoba[7],,.,.:(),.2　SBR(SequencingBatchReactor,,SBR),1　SBR1.　2.3.　4.　5.ORP　6.　7.　8.　9.　10.　11.　12.　13.Fig.1　Flowdiagram&controlofSBRexperimentalsystem1.SBR,38L,,SBR,.、.,BOD∶N∶P=100∶5∶1,pH6.5—8.0.:(SVI)、、(COD)、(MLSS)(DO).3　3.1　:Ns=Q·S0X·V=1t·S0X(1):Ns———(kg/(kg·d));Q———(L/d),SBR,(5L,33L);　　V———(L),38L;t———(d);S0———(COD)(mg/L);X———(mg/L),MLSS,MLVSS/MLSS0.9.CODS0,.1.　　(Qair),COD800mg/L,MLSS1900mg/L,2000mg/L.SVI2,130　　　　　　　　　　201　Table1　Reactiontimeofeveryperiod1—45—89—1213—1617—2021—2425—2829—3233,h1.02.02.53.03.54.04.55.05.5SVI3.,,SVI.12,,1—2.5h,5—10.5kg(COD)/kg(MLSS·d),SVI,80mL/g.,4.5h,2.3kg/(kg·d),,SVI,5200mL/g.2　SVIFig.2　VariationofSVIintheexperiment3　SVIFig.3　EffectoforganicloadingonSVI4　SVIFig.4　VariationofSVIathighorganicloading　　,,,,,.,,,,,[8].,,,;,,,,SVI,.2.2　,1h,Qair.MLSS1500mg/L,1600mg/L10.5kg/(kg·d).MLSS.DO,2mg/L.4,19,SVI150mL/g,,.,,SVI,11250mL/g150mL/g;.1312:SBR,,,,.2.3　DO,.COD900mg/L,MLSS2000mg/L(),1h,Qair0.6m3/h,11.4kg/(kg·d).DOSVI56.DO0.5mg/L(5),DO,,SVI,41,SVI200mL/g(6).,,DO,SVI.,DO,;(),,DO,DO.5　DOFig.5　VariationofDOconcentrationwiththereactiontime6　DOSVIFig.6　EffectofDOonSVIathighorganicloading7　MLSSFig.7　VariationofMLSSintheexperiment　　42,Qair、COD,SVI,MLSS7.MLSS,(OUR),DO20min3mg/L.6,SVI200mL/g(6).48,Qair0.9m3/h,,MLSS855mg/L(7),DO15min4mg/L.56SVI120mL/g(6).,MLSS,OUR,SVI(6).　　,,.,SBR(),,.132　　　　　　　　　　20,,,MLSS.OURDO,,,..3　,:(1),,.(2),.(3)DO,DO..MLSS,DO,MLSS(OUR)DO.:[1]　.[M].:.1992.9—31[2]　SezginM,JenkinsD,ParkerDS.Aunifiedtheoryoffilamentousactivatedsludgebulking[J].JWPCF,1978,50(9):362—381[3]　AndreMvanNiekerk,Davidjenkins,MichelGRichard.Thecompetitivegrowthofzoogloearamiogeraandtype021Ninac-tivatedsludgeandpureculture———AmodelforlowF/Mbulking[J].JWPCF,1987,59(5):262—273[4]　HirokiTanaka,etal.ModelsystemofbulkingandflocculationinmixedcultureofSphaerotilussp.andPseudomonassp.fordissolvedoxygendeficiencyandhighloading[J].WatRes,1985,19(5):563—571[5]　LuisBarahona,WEsleyEckenfederJr.Relationshipbetweenorganicloadingandzonesettlingvelocityintheactivatedsludgeprocess[J].WatRes,1984,18(1):91—94[6]　PalmJC,JenkinsD,ParkerDS.Relationshipbetweenorganicloading,dissolvedoxygenconcentrationandsludgeprocess[J].JWPCF,1980,52(10):2484—2506[7]　ChudobaJ,BlahaJ,MaderaV.Controlofactivatedsludgefilamentousbulking———Ⅲ.Effectofsludgeloading[J].WatRes,1974,8(3):231—237[8]　,,.[J].,1999,7(1):88—93为适应我国信息化建设需要,扩大作者学术交流渠道,本刊已加入《中国学术期刊(光盘版)》和“中国期刊网”。作者著作权使用费与本刊稿酬一次性给付。如作者不同意将文章编入该数据库,请在来稿时声明,本刊将做适当处理。《中国期刊网》网址:《环境科学学报》编辑专用E-mail地址:[e-mail]《环境科学学报》编辑部1332:SBR