UASB李 平1, 张永利2, 吕先林3, 温 青1(1.哈尔滨工程大学化工学院,黑龙江哈尔滨150001;2.广州市市政工程设计研究院,广东广州510060;3.广州市华南水务工程技术有限公司,广东广州510000) : 广东某城市污水处理厂采用UASB—好氧工艺处理低浓度城市污水,对UASB的实际处理效能进行了考察。结果表明,在试验的进水水质条件下,当UASB的水力停留时间为6h时,系统对COD和BOD5的平均去除率分别为50%和60%,对TP的去除率为15%~38%。当HRT由5.67h延长至10h时,出水VFA浓度会随之降低,而pH值则始终稳定在6.5~7.5,系统对COD和BOD5的去除率分别增加9%和19%,对溶解性COD和BOD5的去除率分别增加25%和24%。 : 升流式厌氧污泥床; 低浓度城市污水; 水力停留时间:X703.1 :C :1000-4602(2007)11-0067-03ProductiveStudyonUASBProcessforLow-strengthMunicipalSewageTreatmentLIPing1, ZHANGYong-li2, LVXian-lin3, WENQing1(1.SchoolofChemistryEngineering,HarbinEngineeringUniversity,Harbin150001,China;2.GuangzhouMunicipalEngineeringDesignResearchInstitute,Guangzhou510060,China;3.GuangzhouSouthChinaWaterBusinessProjectTechniqueLimitedCompany,Guangzhou510000,China) Abstract: Theactualoperationperformanceofupflowanaerobicsludgeblanket(UASB)reactorcoupledwithanaerobicprocessfortreatinglow-strengthmunicipalsewagewasinvestigatedinaGuang-dongmunicipalsewagetreatmentplant.TheresultsindicatethatunderHRTof6hinUASBreactor,theaverageremovalratesofCOD,BOD5,andTPinthesystemare50%,60%and15%to38%,respec-tively.WhentheHRTextendsfrom5.67to10h,theeffluentVFAconcentrationdeclines,pHvaluesteadiesat6.5to7.5,theaverageremovalratesofCOD,BOD5,dissolvedCODandBOD5areincreasedby9%,19%,25%and24%respectively. Keywords: UASB; low-strengthmunicipalsewage; HRT UASB,。、,(UASB—)UASB。1 试验部分1.1 3UASB,7500m3,4.5m,、。2m,,·67·第23卷 第11期2007年6月 中国给水排水CHINAWATERWASTEWATER Vol.23No.11Jun.2007,。20℃,35~100d,6h,30kg/m3,17.96m3/(m2·d),2.4kgCOD/(m3·d)。1.2 UASB1。1 Tab.1 CharacteristicsofinfluentCOD/(mg·L-1)BOD5/(mg·L-1)SO2-4/(mg·L-1)NH3-N/(mg·L-1)TP/(mg·L-1)SS/(mg·L-1)pH/130~30030~80300~7005~153~10100~2006~8200~500 1,、、(COD/SO2-41)。1.3 ,96%,VSS/SS=0.523。3,10、8、5gMLSS/L。(HRT)24h,COD,COD80%,、,1,6h。1.4 COD、BOD5、、、(VFA)、pH,。2 结果与讨论2.1 2.1.1 COD1000mg/LUASB,CODUASB[1]。,UASB,COD100mg/LUASB。,,UASBCODBOD550%60%。BOD5,,,,,。2.1.2 30%,。,,,,,15%~38%,,。,,。2.2 2.2.1 CODCOD1。1 CODFig.1 ImpactofwatertemperatureonremovalefficiencyofCOD1,20~25℃,COD50%~65%,20℃,COD,40%~50%。2.2.2 HRTpHVFAVFA,VFA3mmol/L,[2]。,VFA(0.3mmol/L),HRT(5.67h10h),VFA,,HRTVFA,,。,pH,6.5~7.5,HRT(5.67~10h)pH。(下转第73页)·68·第23卷 第11期 中国给水排水 、H2O260mg/L、pH7.1、DOC5.13mg/L、100μg/L,90%。② pHUV—H2O2,pH。,,UV—H2O2,640μW/cm2,。H2O2UV—H2O2,,H2O240mg/L,,。H2O240mg/L,H2O2,。100μg/L,DOC2.39mg/L,180min。,109.48μg/L,,。③ UV—H2O2;UVH2O2,,k。:[1] ArnoldEGreenberg.StandardMethodsfortheExamina-tionofWaterandWastewater(19thed)[M].Washing-tonDC:AmericanPublicHealthAssociation,1995.[2] ,,.(HAAs)[J].,2004,30(8):38-41.[3] .[M].:,2004.[4] AleboyehAzam,MoussaYasser,AleboyehHamid.Kinet-icsofoxidativedecolourisationofAcidOrange7inwaterbyultravioletradiationinthepresenceofhydrogenperox-ide[J].SepPurifTechnol,2005,43(2):143-148.:(021)55217700×209E-mail:whh2003@eyou.com:2006-12-30(上接第68页)2.2.3 HRTHRT2。2 Fig.2 ImpactofHRTonorganicremoval2,HRT5.67h10h,COD9%,BOD519%,CODBOD525%24%。,HRT。3 结论① ,UASB6h,COD50%,BOD560%,15%~38%,。② UASBVFA0.3mmol/L,HRT(5.67~10h),VFA,pH6.5~7.5。③ HRT5.67h10h,CODBOD59%19%,CODBOD525%24%。:[1] .[M].:,1998.[2] ,.[M].:,2000.E-mail:liping800214@126.com:2007-01-07·73·伍海辉,等:UV—H2O2工艺去除饮用水中二氯乙酸的研究第23卷 第11期