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A2N王亚宜1, 杜 红2, 彭永臻1, 尾崎益雄3, 川哲夫3(1.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090;2.深圳市水务集团有限公司,广东深圳518031;3.日本前桥工科大学市政工程系,日本国) : 以生活污水为处理对象,对A2N(厌氧缺氧和硝化)连续流反硝化除磷脱氮的双泥工艺进行了研究,试验结果表明:A2N工艺对TN、TP和COD的去除率分别达到了92.6%、98%和95%,且出水指标均达到了GB8978—1996的一级排放标准。试验过程中还发现CODTP、硝酸盐氮浓度、MLSS和SRT等因素对系统的脱氮除磷效果有较大影响。此外,以碳纤维为填料的生物膜硝化池在整个运行过程中效果很稳定(硝化率趋于100%)。 : A2N; 反硝化除磷; 双泥系统:X703.1 :A :1000-4602(2003)09-0008-04A2NProcessforDenitrifyingPhosphorusandNitrogenRemovalandItsAffectingFactorsWANGYa-yi1, DUHong2, PENGYong-zhen1, MasuoOzaki3, AkioTakigawa3(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.ShenzhenWaterAffairsGroupCo.Ltd.,Shenzhen518031,China;3.DepartmentofCivilEngineering,MaebashiInstituteofTechnology,Maebashi,Japan) Abstract: StudywasmadeontheuseofdomesticsewageastreatmentobjecttoinvestigatetheA2N(anaerobicanoxicnitrification)twosludgeprocessfordenitrifyingphosphorusandnitrogenre-moval.TheresultshowedthatA2Nprocesshasremovalrateof92.6%,98%and95%respectivelyforTN,TPandCOD,andtheeffluentqualitycanreachthefirstclassdischargestandardinGB8978-1996.ItwasalsofoundintheexperimentthatthefactorssuchasCODTP,nitratenitrogenconcen-tration,MLSS,andSRThavemoresignificanteffectsonnitrogenandphosphorusremovalefficiency.Furthermore,thebiofilmnitrifyingreactorwithcarbonfiberascarrieroperatessteadilyduringtheop-eratingperiod(nitrificationrateapproachesto100%). Keywords: A2N; denitrifyingphosphorusremoval; twosludgesystem :(863)(2003AA601010); (50138010); (KZ200310005003) A2N(anaerobicanoxicandnitrifying)(DPB)PHB“”,。·8· 2003Vol.19 CHINAWATER&WASTEWATER No.91 工艺概述A2N1。1 A2N A2N:①CODDPBPHB,PHBDPB,“”,CODTN,A2N;②A2N,,,,,,DPB,,,、,;③;④DPB,[1~3]。2 试验材料与方法,。HRT3.3h5.5h,HRT7h1.3h;43.2Ld,34%~40%;DPBSRT10~14d(SRTDPBSRT)。、,20~22℃。DO4~6mgL,DO4mgL。,COD;NaHCO3pH6.8~8,1。1 COD(mgL)BOD5(mgL)NH+4-N(mgL)TN(mgL)TP(mgL)pH(mgL)300~420200~28045~6049~713.78~7.726.84~7.45340~40034925251.657.66.17.21360 COD、NH+4-N、NO-3-N、TN、TP、pH、、、DO、ORP、MLSS,,。DOWTW-300i,pHORPWTWlevel2。3 结果与讨论20028,,11。3.1 (2003110—313)TN49~71mgL(57.5mgL),TN1.8~6.7mgL(4.2mgL),TN88.4%~96.6%(92.6%)。TN,(28·9·2003Vol.19 No.9~40mgL),,TN。,DPBPHB,,,TN,。TN1~3mgL1mgL。A2N,,(100%),。A2N,,、,。3.2 TP(2003110—313)TP6.1mgL,TP≤0.3mgL,98.26%。DPB,TP30~45mgL;,PHB,,,TP0~4mgL,。TP,,“”。COD100mgL,NO-3-N。38mgL、33mgL,(g)NO-3-N1.15g。3.3 (2003110—313),COD300~420mgL(348mgL),COD7~30mgL(17mgL),COD91%~97%(95%)。COD、。,COD74%。,A2NDPBPHB,“”。COD。,CODTN62.7,。4 影响因素及控制4.1 CODTPCOD。CODTP57.2,TNTP9.44,,,COD,。Kerrn-Jes-persen,COD(HAC)。TP,DPBPHB,(),,;,,PHB。,COD,DPBPHB,,。4.2 ,NO-3-N[4]。NO-3-N,,PHB[4]。,2mgL,0.5mgL,,A2N,DPB。·10·2003Vol.19 No.9,。,。,29~40mgL(38mgL),TP≤4mgL。,:2003218,,23.74mgL(),TP30.3mgL,TP8.14mgL,TP1.93mgL。,。4.3 MLSSSRTMLSS,DPB,。、MLSS3900~5000mgL,MLSS(1∶1∶1),。,,MLSS,。SRTMLSS。DPB,PAO,SRT,;,SRTMLSS,。Tykesson:SRT,,、、[5]。20021224—200312SRT(7d),,MLSS3900~5000mgL2700~3200mgL,,,,TP。,SRTA2N,SRT10~14d,,。5 结论① A2N,DPB,,,、、,。② A2NTN、TPCOD92.6%、98%95%,《》。,,。③ CODTP、、MLSSSRT,,A2N。:[1] KubaT,VanLoosdrechtMCM.Phosphorusandnitro-genremovalwithminimalCODrequirementbyintegra-tionofnitrificationinatwo-sludgesystem[J].WatRes,1996,42(1~2):1702-1710.[2] JensPeterKeren-Jespersen,MogensHenze,etal.Bio-logicalphosphorusreleaseanduptakeunderalternationanaerobicandanoxicconditionsinafixed-filmreactor[J].WatRes,1994,5(28):1253-1255.[3] NgWJ,OngSL,HuJY.Denitrifyingphosphorusre-movalbyanaerobicanoxicsequencingbatchreactor[J].WatSciTech,2001,3(43):139-146.[4] SormR,BortoneG.Phosphateuptakeunderanoxiccon-ditionsandfixed-filmnitrificationinnutrientremovalactivatedsludgesystem[J].WatRes,1996,7(30):1573-1584.[5] TykessonE,AspegrenH,HenzeM,etal.Useofphos-phorusreleasebatchtestsformodelinganEBPRpilotplant[J].WatSciTech,2001,3(43):115-123.:(1977- ), , , , 。:(010)67392627 67394285:2003-05-15·11·2003Vol.19 No.9
本文标题:A2N反硝化除磷脱氮工艺及其影响因素王亚宜
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