UASB反应器酸化后的状态及恢复研究刘敏

:2002-09-03　　:2003-01-06:(GA01C201-01),(HIT.2001.51):　(1972-),,,。UASB刘　敏,任南琪,王爱杰,丁　杰,王相晶(,　150090)　:(UASB),。,COD、pH、、,ORP,;,;COD;。:;;COD:X703;S216.4　　:A　　:1000-1166(2003)02-0007-04AcidificationStateandRecoveryExperimentofUASBReactor/LIUMin,RENNan-qi,WANGAi-jie,DINGJie,WANGXiang-jing/(ResearchCenterofEnvironmentalBio-technology,HarbinInst.ofTech.,Harbin150090,China)Abstract:AcidificationexperimentsontheUASBreactorwereconducted,whichstudiedacidificationstatesandtherecoveries.Threekindsofremedymethodswereadoptedfortherecovery.Resultsindicatedthatafterthereactoracidificationhappend,itbehavedasCODremovalabilityfailure,thepHdropped,alkalinitydeclined,thegasproductionratereduced,ORPraised,andmicrobialcommunitychanged.Displacingtheacidifiedfermentingliquorwithstoredeffluentfrommethenogenic-phasereactorcouldsolvetheproblemeffec-tively.RoutinemeasurementofCODcouldobservethethehappeningofacidificationintimeandbiogasproductionratecanbeusedasindicativeparameterinpractical.Keywords:acidification;recovery;routinemeasurementofCOD　　,,。UASB[1]。80UASB,“”、“”“”,[2]。,,COD、pH,,。,。UASB,[3,4,5,8],。,。7ChianBiogas2003,21(2),。1　1.1　实验材料和方法1,(CSTR,98240801.3),9.8L,62.7L(UASB)。37℃35℃,(N,P,COD∶N∶P=1000∶5∶1),Q=50L·d-1,(500～1000mg·L-1),,。1.2　分析方法COD:;pH:pHS-25;:(CaCO3);:pHS-25+。(GC—122):5mL,6M,10min(TGL·16G;11000r·min-1),、、、。:2m×φ5mm,2%H3PO4GDX—103(60～80),()37mL·min-1,()30mL·min-1,()360mL·min-1,190℃,220℃,220℃。Olympus,(XS-18)2　2.1　反应器酸化状态研究,。COD5000mg·L-11000mg·L-1。2、3UASBpH。COD(UASB50%),1～2dpH(pH5.5),,COD,pH,。UASB,pHCOD,COD,pH。,,,UASB,,CODpH。,,。,。,(ALK),4,UASB。(ALKt),(ALKc),,,,,CO22-、HCO2-OH-,8ChianBiogas2003,21(2),,,,;,,,。,,()。,,。,,,,(ALKt1200mg·L-1,ALKcALKt100)。　　,UASBpH、(ORP),56。7,pHpH,pH(6.0～8.2)[6]。pH,。8,,ORP,ORP,,(-300～-500mV)[7],。,,,、;,,,pH6.0,,,。,,,,,,,[8]。2.2　酸化后的恢复措施研究,。,,,,。,(,1～2h),(),pH7.0(UASB),13,UASBpH5.16.5,,UASB(50mg·L-1)。,(2000mgCOD·L-1),,pH4.57.0(UASB),9,UASBpH5.46.55,,UASB。9ChianBiogas2003,21(2)　　,,,4()。2h,3#,,67%,。8,UASBpH5.356.58,,CODCOD95%,。,4,,,,,,。(),,,。,。,[8],,,,,,,。3　(1),。(2)1～2d,COD,COD,UASB。,。(3)COD、、ORP、、pH,;,。:[1]　RESpeece.()[M].:,2001.[2]　,,,,.UASB[M].:,2000.18～21.[3]　RBlaszczyk,DGardner,NKosaric.ResponseandRecoveryofAnaerobicGranulesFromShockLoading[J].WatRes,1994,28:675～680.[4]　RaghudaLepisto,JukkaRintala.ExtremeThermophilic(70℃),VFA-fedUASBReactor:Performance,Tempera-tureResponse,LoadPotentialandComparisonwith35and55℃UASBReactors[J].Wat.Res.1999,33:3162-3170.[5]　HerbertHPFang,YuYouLi,HoKwongChui.UASBTreat-mentofWastewaterwithConcentratedWixedVFA[J].Jour-malofEnvironmentalEngineering.1995,121(2):153-160.[6]　.[M].:,1997.[7]　《》.[M].:,1984.[8]　.[D].:,1990.10ChianBiogas2003,21(2)