常温下内循环厌氧反应器的启动研究*宋 倩 马邕文(,510006):研究了内循环厌氧反应器(IC反应器)在常温下处理葡萄糖配水的启动特性。结果表明:在运行温度为25~35℃的条件下,反应器经70d启动完成,且IC反应器具有较好的处理效果,反应器内能形成大量的颗粒污泥。启动完成后,进水COD浓度在3000mg/L左右时,COD去除率一直保持在95%以上,出水COD浓度维持在200mg/L左右。当HRT为5.8h,容积负荷为11.9kg/(m3·d)时,出水VFA低于200mg/L,产气量为33L/d,反应器运行正常。:内循环厌氧反应器;启动;容积负荷;挥发酸(VFA)STUDYONTHESTART-UPOFTHEINTERNALCIRCULATIONANAEROBICREACTORUNDERNORMALTEMPERATURESongQian MaYongwen(CollegeofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,China)Abstract:Thestart-upcharacteristicsoftheinternalcirculation(IC)anaerobicreactorwerestudiedatnormaltemperature.Theresultsshowedthatstart-upofICreactorwasfinishedafter70dat25~35℃,andtheICreactorwascapableofremovingpollutantsfromthewastewater.Alargeamountofgranularsludgewasformedinthereactor.Afterfinishingstart-up,theinflu-entcontainedCOD(3000mg/L),theCODremovalratewasover95%,CODwasabout200mg/Lineffluent.Whenhy-draulicretentiontime(HRT)andthecorrespondingCODvolumeloadwere5.8hand11.9kg/(m3·d),VFAcontentwaslessthan200mg/L,gasproductionwas33L/d,andthereactorrunnormally.Keywords:internalcirculationanaerobicreactors;start-up;CODvolumeload;volatilefattyacid *(2008A080800003)。0 UASB、EGSB,PAQUES2080UASB。,、、、pH[1]。(33~36℃)[2-6]。、,。、,,。,IC,。。1 1.1 试验装置IC、,。200mm,25L,1272cm,5,500,700,920,1090,1260mm。IC、、、。4∶1。IC1。1.2 试验用水,、ρ(C)∶ρ(N)∶ρ(P)200∶5∶1,Ca、Mg、Fe、Ni、Co。pH。14 20102281DOI:10.13205/j.hjgc.2010.01.0051—;2—;3—IC;4—;5—1 IC 1.3 接种污泥,ρ(VSS)/ρ(SS)=0.34。8L,71.7g/L。1.4 试验方法COD3000mg/L24h。COD3000mg/L,pH7~7.9。HRT24h,3kg/(m3·d),COD80%,,20%~30%。2 2.1 反应器的启动运行结果70d。(1~25)(26~70)。,1.05L/h,HRT24h,25d,COD200mg/L。,,HRT4.8h,COD100mg/L,,VFA,。,HRT5.8h,。2.2 COD去除效果及内循环、CODCOD2。,,,“”。,IC30~35℃。COD,,COD,1.55kg/(m3·d)2.74kg/(m3·d),[3kg/(m3·d)]。,,COD95%。,。2 、COD ,HRT4.8h,2.74kg/(m3·d)14.41kg/(m3·d)。26~5330~35℃,,4d,。53~7028~32℃,COD,,,,VFA,VFA。,HRT。32,,70,,70d,,。,,,COD,,。2.3 产气量变化,。,,。,3。1,,1d。3,1.55~14.41kg/(m3·d),4.5~45.1L/d。15 201022813 ,,。55~57,,,,40.9L/d,,。,,,COD。COD,。2.4 出水pH的变化pH,,,pH,6.5~7.8,pH6.8~7.2。VFApH4。NaHCO3pH7.5,,pH,pH。0~54pH6.5。54,HRT5.8h,pH,57,pH6.1。HRT7h,pH,HRT,HRT4.8h,pH6.2,。4 VFApH 2.5 出水VFA变化VFAIC。,VFA,VFA。,VFA。VFA200mg/L,。4,VFA,,VFA。57VFA250.6mg/L,pH6.3,。,VFA,。HRT4.8h,14.41kg/(m3·d),pH6.2,VFA382mg/L,VFA,。,,,VFA,pH。3 1),HRT24h4.8h,1.55~14.41kg/(m3·d),COD95%。2),COD(3000mg/L),,45L/d。HRT4.8h,,32~45L/d,,,VFA382mg/L,pH6.5。3)HRT5.8h,,COD95%,VFA200mg/L,。[1] .[J].,1999,17(2):3-6.[2] ,,,.(IC)[J].,2001,17(1):26-29.[3] ,,,.[J].,2001,33(3):30-34.[4] ,,.[J].,2006,37(3):63-65.[5] ,,,.IC[J].,2007,25(3):57-60.[6] ,,.IC[J].,2008,27(3):5-7. 510006 C11-206E-mail 229784640@qq.com2009-02-1016 20102281