HRT对固定床厌氧反应器运行效果的影响林长松

4　3环境工程学报Vol.4,No.320103ChineseJournalofEnvironmentalEngineeringMar.2010HRT林长松1,2　袁旭峰1　王小芬1　冯宗强1,3　朱万斌1＊　程　序1　崔宗均1(1.,,100193;2.,553004;3.,133400)　　(HRT),COD20000～25000mg/L40000～45000mg/L2,HRT。,HRT,(OLR),COD20000～25000mg/LCOD,COD40000～45000mg/L;COD20000～25000mg/L,HRT14h,OLR41.09kgCOD/(m3·d),COD68%,14.55m3/(m3·d)。COD、pH、,。　(HRT)　　　　COD　　X703.1　　　A　　　1673-9108(2010)03-0497-06Effectsofhydraulicretentiontimesonperformanceofanaerobicfixed-bedreactorpackedwithcarbonfiberascarrierLinChangsong1,2　YuanXufeng1　WangXiaofen1　FengZongqiang1,3ZhuWanbin1　ChengXu1　CuiZongjun1(1.CenterofBiomassEngineering,CollegeofAgronomyandBiotechnology,ChinaAgriculturalUniversity,Beijing100193,China;2.DepartmentofLifeScience,LiupanshuiNormalCollege,Liupanshui553004,China;3.AgriculturalCollegeofYanbianUniversity,Longjing133400,China)Abstract　Ananaerobicfixed-bedreactorpackedwithcarbonfiberascarrierwasdesignedanditsperform-ancewasevaluatedatvarioushydraulicretentiontimes.Theobjectivewastofindtheoptimalconcentrationofin-fluentchemicaloxygendemand(COD)andhydraulicretentiontime(HRT)fortreatingsewage.TheresultsdemonstratedthattheperformanceofinfluentCODrangebetween20000and25000mg/LwasmarkedlybetterthanthatofinfluentCODrangebetween40000and45000mg/L,however,theorganicloadingrate(OLR)wasuniformviaHRTadjusted.UnderconditionsofinfluentCODrangebetween20000and25000mg/L,andHRTas14hours,therelevantOLRas41.09kgCOD/(m3·d),theCODremovalefficiencystillmaintainedmorethan68%,andthebiogasproductionperunitvolumeofreactorattainedto14.55m3/(m3·d).Thean-aerobicfixed-bedreactorpackedwithcarbonfiberascarrierdemonstratedahigherCODremovalefficiencyandbiogasproduction,andashockresistancecapabilityoflowpHandhighloadingrate.Nocloggingwasobservedduringtheoperationprocess.Keywords　hydraulicretentiontime(HRT);carbonfiber;anaerobicfixed-bedreactor;biogas;chemicaloxygendemand(COD)removalefficiency;organicloadingrate(OLR):“”(2007BAD75B07);“948”(2006-Z24):2009-03-23;:2009-04-13:(1969～),,,,。E-mail:[e-mail]＊,E-mail:[e-mail]　　、、,pH,CODBOD。。、,,、,,[1～3]。,“”,,,4[4～6]。,。,,,。、(HRT)(SRT),,。,,[7]。,,、、,,,SRT,[8～12]。HRTCOD2。。HRT,CODOLR,COD20000～50000mg/L,、COD、pH[13]。HRTCOD,,COD20000～2500040000～45000mg/L2,HRT,。1　1.1　,25cm,60cm,25.46L。1100m2/g(,),20L。1。1.2　,,,,1　Fig.1　Schematicdiagramofanaerobicfixed-bedreactorCOD∶N∶P300～500∶5∶1。COD80000mg/L,TSS2.15g/L,VSS1.32g/L。1.3　pH:HORIBAB-212pH,;COD:,1d、,COD(Lovibond,ET99731);:(LML-1,);(TS)(VS):[14]。1.4　4L,COD2000mg/L20L。,2℃,18℃35℃。2d,,4～5h,HRT200h,COD5000mg/L,OLR0.55～0.65kgCOD/(m3·d)。1HRT,OLR。pH、[15]。30d,,pH4.2～5.2。pH2,5.4,21d,pH6.9～7.3,4983:HRT0.35L/(L·d),,。1.5　2,R1R2。R1COD20000～25000mg/L,R2COD40000～45000mg/L。35℃,(BT-200,2X(1～6800)mL/h,,)。R1HRT312h,R2HRT371h,COD80%,HRTOLR,2～3,38d。2　2.1　HRTOLR1.5,HRTOLR2。R1R2HRT312h371h,OLR2.26kgCOD/(m3·d)2.69kgCOD/(m3·d)。,R1CODR2,HRT,R2,HRT,OLR。R1R2OLR56.96kgCOD/(m3·d)56.72kgCOD/(m3·d),HRT10.2h18.6h,,COD20000～25000mg/L40000～45000mg/L2,HRT,OLR50kgCOD/(m3·d)。2　OLRHRTFig.2　Relationshipsbetweenhydraulicretentiontimesandorganicloadingrates2.2　HRTpHpH,,pH,。,pH6.8～8.0[16,17]。、pHHRT,3。3　HRT、pHFig.3　VariationofinfluentandeffluentpHatdifferenthydraulicretentiontimes,HRT,OLR,R1R2pH3.5～4.5,2,pH6.8～7.6;R1R2HRT25h34h,OLR21.38kgCOD/(m3·d)32.35kgCOD/(m3·d),pH,,pH5,。pH,;R1R2HRT10h18h,OLR54.32kgCOD/(m3·d)53.25kgCOD/(m3·d),pH。COD,(3)。pH6.8～7.2。pH6.37.8,[18,19]。,pH。、CO2NH+4,4994,,pH。,。,pH,pH,HRT、OLR20kgCOD/(m3·d),,;HRT,OLR20～50kgCOD/(m3·d),,。2.3　HRTCODR1R2CODCOD4。38d,R1、R2COD22450mg/L43600mg/L。R1HRT25h,OLR21.38kgCOD/(m3·d),COD80%～96.5%,OLR41.09kgCOD/(m3·d),COD68%,HRT,OLR54.32kgCOD/(m3·d)56.96kgCOD/(m3·d),COD60%(4a),pH;R2HRT45h,OLR24.69kgCOD/(m3·d),COD80%,OLR32.35kgCOD/(m3·d),COD68%,HRT18h,OLR53.25kgCOD/(m3·d)56.73kgCOD/(m3·d),COD50%(4b),。,COD20000～25000mg/LCOD40000～45000mg/L。,COD20000～25000mg/L40000～45000mg/L2,OLR20～25kgCOD/(m3·d),,COD80%。OLR40kgCOD/(m3·d),COD70%,4[20～22],,,4　HRTCODFig.4　CODremovalefficiencyatdifferenthydraulicretentiontimes,,。,。UASB、UASB,,4,,,。2.4　HRTR1R2HRT5,,,HRT,OLR。,R1HRT48h,OLR12.60kgCOD/(m3·d),,HRT14h,OLR41.09kgCOD/(m3·d),,14.55m3/(m3·d),54.32kgCOD/(m3·d),,。56.96kgCOD/(m3·d),(5a),。R2R1,R2R1,,HRT45h,OLR25.12kgCOD/(m3·d),5003:HRT13.35m3/(m3·d)(5b),R1。,R1R25380L3643L,1.5。7.08m3/(m3·d)4.79m3/(m3·d)。,OLR[23]。,COD20000～25000mg/LCOD40000～45000mg/L;COD20000～25000mg/L,HRT14h。5　HRTFig.5　Biogasproductionprofilesatdifferenthydraulicretentiontimes2.5　HRTTSSVSSR1R2(TSS)(VSS)HRT6。COD20000～25000mg/L(R1),HRT312h,TSSVSS73.26%75.99%,HRT,TSSVSS,,6.34%9.22%(6a)。COD40000～45000mg/L(R2),HRT371h,TSSVSS71.32%81.91%,HRT,TSSVSSR1,,TSS1%,VSS6　HRTTSSVSSFig.6　TSS,VSSremovalefficiencyatdifferenthydraulicretentiontimes-7.51%(6b)。VSS,HRT,,OLR,,。,[3]。3　　(1)HRT,(OLR),COD20000～25000mg/LCOD,COD40000～45000mg/L。(2)COD20000～25000mg/L,HRT14h,OLR41.09kgCOD/(m3·d),COD68%,14.55m3/(m3·d)。(3),COD、pH、,、,,。[1]Macias-CorralM.,SamaniZ.,HansonA.,etal.Anaero-5014bicdigestionofmunicipalsolidwasteandagriculturalwasteandtheeffectofco-digestionwithdairycowmanure.Biore-sourceTechnology,2008,99(17):8288～8293[2]LefebvreO.,VasudevanN.,TorrijosM.,etal.