复合式厌氧折流板反应器启动性能研究丁绍兰

　　　201129丁绍兰　贾文颖　董凌霄　刘溪坤　汪迪(,710021)　:研究了以厌氧污泥接种的复合式厌氧折流板反应器(HABR)的启动,考察了其快速启动过程中的处理效果及颗粒污泥的形成。结果表明:在中温(34±1)℃条件下,先固定进水浓度为1000mg/L,逐步缩短水力停留时间(HRT):48h-24h-12h,后固定HRT为18h,并逐步提高COD浓度的方法,HABR在38d内完成了启动。启动完成时容积负荷为3.3kgCOD/(m3·d),COD去除率95%,出水pH在6.9～7.2,挥发性脂肪酸(VFA)的浓度小于2mmol/L。启动过程中表现出了明显的生物相选择和分离特性,同时证明HABR中填料上的生物量对COD的去除有一定的作用。:复合式厌氧折流板反应器(HABR);启动;有机负荷;颗粒污泥STUDYONSTART-UPPERFORMANCEOFHYBRIDANAEROBICBAFFLEDREACTORDingShaolan　JiaWenying　DongLingxiao　LiuXikun　WangDi(CollegeofResourceandEnvironment,ShaanxiUniversityofScience&Technology,Xi'an710021,China)Abstract:Start-upofhybridanaerobicbaffledreactor(HABR)inoculatedwithanerobicsludgehasbeenstud-ied.Itstreatmentperformanceandsludgegranulatingprocesswereinvestigated.TheexperimentalresultsshowedthattheHABRcanquicklyachievedthestart-upwithin38d,whichoperatedatthetemperature(34±1)℃.Initially,thehydraulicretentiontime(HRT)wasgraduallydecreasedataconstantinfluentCODcon-centrationof1000mg/L,thentheinfluentCODwasincreasedataconstantHRT.Thevolumeorganicloadingwas3.3kgCOD/(m3·d)andCODremovalratewashigherthan96%whenthereactorrunsuccessfully.TheenfluentpHvaluewasbetween6.9and7.2andtheconcentrationofvolatilefattyacid(VFA)waslowerthan2mmol/L.Inaddition,thediameterofthegranualarsludgewasdecreasedalongthecompartments.Theno-ticeablephenomenonofphaseseparationandsegregationbetweenacidogenesisandmethanogenesiswasob-servedduringthecourseofHABRstart-up.Keywords:hybridanaerobicbaffledreactor(HABR);start-up;volumeorganicloading;granularsludge　　ABRStanfordMcCarty80[1]。ABR(HABR)。HABRABR,,,。。HABR,COD、(VFA)、pH、。。1　1.1　试验装置1。,:××=674mm×213mm×510mm,。30.24L。。1.2　试验用水,,ρ(COD)∶ρ(N)∶ρ(P)250∶5∶1～300∶5∶1。,900mg/L。,,:Fe3+,Mg2+,Ca2+,Cu2+,Zn2+,Ni2+,Co2+[2]。1.3　接种污泥UASB419DOI:10.13205/j.hjgc.2011.s1.081　　　2011291　HABR。(SS)69.29g/L,(VSS)52.62g/L,VSS/SS0.76。1/3。1.4　分析项目及方法CODGB11914-89;VFA;;pHpHS-25pH;TM-1000。2　HABR,:1)COD=1000mg/L,,(HRT):48h-24h-12h-18h,。2)HRT=18h,COD2500mg/L。38d,。COD3.33kg/(m3·d),COD96%。HRT2。2　HRT,HRT12h4dCOD90%,1,,,,,,。,2,。HRT18h,。2.1　启动过程中COD去除率变化,COD90%,。3CODCOD。3:5COD90%,。,COD1,80%。1,,。3:COD2kg/(m3·d),1,2,3、4,HABR。3　COD14,,1,122,2COD,2。2.2　填料对COD的去除作用HABR,。HRT=12h,。41COD。,,COD。COD379mg/L。HABR。2.3　VFA的变化420　　　2011294　HRT=12hCODVFA[3]。,VFA5。5:,VFA。COD0.5kg/(m3·d),,VFA。,VFA,,VFA。COD2kg/(m3·d)1.33kg/(m3·d),VFA,VFA。5　VFA,VFA。COD,VFA,[4]。,,VFA,2mmol/L,2、3、4。2.4　pH的变化pH,[5]。pH6。6:,6　pHpH,6.0～7.5。COD2kg/(m3·d),1pH6,2。pH,2,VFA,3pH6.5～7.0,4。2,2,。,pHHABR,pHVFA。2.5　成功启动后污泥的电镜扫描结果,730。7:,1～5mm。1,,,,,、。2,,,,。3,,,,,。4,。,。8。8:。1,,,,,,。2,,7(b)。,421　　　201129[6]。,,。3、,。4,、、,。7　(×30)8　3　1)HABR,,,(34±1)℃,,38d,COD3.3kg/(m3·d)。HRT18h。2)HABR,。,。,,。3),,。HABR。[1]LettingaG,FieldJ,VanJ.Advancedanaerobicwastewatertreat-mentinthenearfuture[J].WaterSciTech,1997,35(10):5-12.[2].[M].1.:,2003:134-236.[3].UASB[J].,2005,28(2):22-23.[4].ABR[D].:,2006:27-29.[5],,,,ABR[J].,2000,16(8):42-44.[6]GuiotSR,PaussA,CostertonJW.Asurtetuerdmodeloftheanae-robicgranuleconsortium[J].WaterSciTech,1992(25):1-10.　　710021　E-mail　[e-mail]2011-07-06422