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465Vol．46No．5201210JournalofHenanAgriculturalUniversityOct．20122012－05－130821021400151958．1000－2340201205－0567－04IC450045ICpH、VFApH3．5～4．50～10mmol·L－1VFA10～30mmol·L－1COD52．00kg·m－3·d－1COD31．20kg·m－3·d－1350L·d－1360L·d－148%．ICX703．1AStart-upcharacteristicsoffermentionhydrogenproductionbyICreactorZHULing-fengCHENGMengSUCai-liWANGYanZHANGNanCHENGui-xiaTIANYan-eSchoolofEnvironmentalandMunicipalEngineeringNorthChinaInstituteofWaterConservancyandHydroelectricPowerZhengzhou450045ChinaAbstractTheresearchisbasedonthestart-upcharacteristicsofhydrogenproductionbyICreactor．InthecourseoftheexperimentwedeterminedtheoperationalstatusofICreactorbymonitoringtheeffluentpHvalueALKandVFA．TheeffluentpHvalueretainedat3．5to4．5ALKretainedat0to10mmol·L－1VFAwasintherangefrom10to30mmol·L－1whenthesystemwasrunningwell．Thereactorcouldoperatestablyunderhighloadbymeasuringthegasproductionrate．Ithadahigherproductionratewhenthevolumeloadwasat52．00kg·m－3·d－1buttheincreasingofgasproduc-tionratewasnotashighasthevolumeloadincreasingsowecouldkeepthevolumeloadat31．20kg·m－3·d－1andthegasproductioncouldreach350L·d－1．TheICreactorhadalargeamountofgasproductionandthehydrogencontentwashighandthemaximumproductionratecouldreach360L·d－1andhydrogencontentwasupto48%．KeywordsICreactorfermentationhydrogenproductiongasproductiongranularsludgeIC．21～3．UASB4．CSTR、UASB、5ICIC．DOI:10.16445/j.cnki.1000-2340.2012.05.0045684611．1IC140mm5mm1520mm1260mm1700mm220mm×140mm15mm23．1L18．46L8．、、、．1．1．2．3．IC4．5．6．．1．Watertank2．Peristalticpump3．ICreactor4．Waterseal5．Wetgasflowmeter6．Temperaturecontrolinstrument．1ICFig．1Theflowchartofinternalcirculationreactor1．2NH4ClKH2PO4mC∶mN∶mP=200∶5∶1CaMgFeCuBMnZnCoMoNiNaH-CO3．1．3MLSS82．95g·L－1VSS72．40g·L－1．1．4CODVFApH6．2、．、、、H2CO2CH4CO2．2．．IC2000mg·L－11．5L·h－110．42L·h－1HRT12．3hCOD3．90kg·m－3·d－1．COD．COD2000mg·L－110000mg·L－11．5L·h－14L·h－10．33．1pH、pH．pH78．2pHpHpH2pH3．5～4．5．VFAVFAVFAVFAVFAVFA．9pHVFA5IC569．VFA0～10mmol·L－1．3．25．COD3．3HRT12．3h5．3hCOD．HRT4．6hHRTCOD．HRT4．6hCODCOD50%．4．440dCOD31．20kg·m－3·d－12～3d350L·d－1．4Fig．4Relationshipbetweengasproductionandvolumeloadingrate5．48%IC．5Fig．5Thechangetrendofhydrogencontentinfermentationgas3．3、、6．60．45mm3%0．45～2．0mm85%570462．0mm12%．0．45mm16%2．0mm46%0．45～2．0mm38%．0．45mm0．5%2．0mm21%．6Fig．6Sizedistributionsofthegranularsludge41pH、VFAICpH3．5～4．5VFA．2COD10000mg·L－1COD52．00kg·m－3·d－1COD31．20kg·m－3·d－1350L·d－1．3360L·d－148%．1PEREBOOMJH．MethanogenicgranuledevelopmentinfullscaleinternalcirculationreactorsJ．WatSciTech19943089－12．2．J．19991723－6．3．J．199819194－96．4．ICJ．200117126－29．5．D．2008．6．J．200435257－59．7HORIUCHIJISHIMIZUTTADAKetal．SelectiveproductionoforganicacidsinanaerobicacidreactorbypHcontrolJ．BioresourceTechnology200282209－213．8．J．1994117－19．