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当前位置:首页 > 行业资料 > 其它行业文档 > 不同温度下MESBR工艺和传统的SBR工艺对比试验研究马春艳
不同温度下MESBR工艺和传统的SBR工艺对比试验研究*马春艳1 韩洪军2 王卓艺1(1.,150090;2.,150090):在不同温度下,研究了流化填料分格式SBR工艺(简称MESBR工艺)与传统的SBR工艺的COD去除率,有机物降解速率,脱氮效果和污泥沉降性能。结果表明:MESBR系统温度下降到5℃时,COD的去除率基本稳定在90%以上,比传统SBR系统高出15%左右;MESBR系统与传统SBR系统的温度系数θ分别为1.021和1.045。温度由20℃下降至5℃时,传统SBR系统的TN和NH3-N去除率分别降低26.5%和20%,而MESBR系统分别降低18.6%和11%。传统SBR系统SVI值随温度变化较大,当温度下降到5℃时SVI值达到234.8mLg,而MESBR系统的SVI值没有明显的变化,基本维持在120~130mLg。:MESBR工艺;SBR工艺;流化填料CONTRASTSTUDYONMESBRPROCESSANDSBRPROCESSATDIFFERENTTEMPERATURESMaChunyan1 HanHongjun2 WangZhuoyi1(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.StateKeyLaboratoryofUrbanWaterResourceandEnvironment,HarbinInstituteofTechnology,Harbin150090,China)Abstract:AmodifiedSBRprocesshadbeendesigned,whichwascalledsuspendedcarrierdividingSBRprocessandalsocalledMESBRprocess.TheCODremovalrate,thedegradationoforganicpollutants,theeffectofnitrogenremovalandthesludgesedimentationperformancewerecomparedbetweenMESBRprocessandSBRprocessatdifferenttemperatures.ExperimentalresultsshowedthattheCODremovalratemaintainedabove90%withthetemperaturedeclinedfrom20℃to5℃.Whenthetemperaturedeclinedto5℃,theCODremovalratewas93%,whichwas15%higherthantheSBRprocess.ThetemperaturecoefficientofMESBRprocessandSBRprocesswere1.021and1.045,respectively.Whenthetemperaturedecreasedfrom20℃to5℃,theremovalefficiencyofNH3-NinSBRprocessandMESBRprocessdecreasedby20%and11%,andtheremovalefficiencyofTNdecreasedby26.5%and18.6%.TheSVIvaluevariedgreatlywithtemperatureinSBRprocess.TheSVIvalueofSBRprocessinnormaltemperatureandlowtemperatureare125.3mLgand234.8mLg,however,theSVIvalueofMESBRprocesswas120to130mLgwhichhasn'tdrasticchangewiththedecreaseoftemperature.Keywords:MESBRprocess;SBRprocess;fluidizedfiller *“863”(2007AA06A411)。 、,、,。,。SBR,SBR(MESBR)。MESBRSBRCOD、NH3-N,BOD、,MESBR;。1 1.1 试验用水,38 200912276DOI:10.13205/j.hjgc.2009.06.013,:ρ(COD)=230~350mgL,ρ(BOD5)=160~250mgL,ρ(NH3-N)=15~30mgL,ρ(TP)=1~3mgL,pH=6.5~7.4。1.2 试验装置1。,,40cm,15cm,30cm,15L。,;。,,,7mm,,。,5~10℃,。1—;2—pH;3—pH;4—DO;5—DO;6—;7—;8—;9—;10—;11—;12—;13—;14—;15—();16—。1 2 2.1 对两系统COD去除率的影响,2d1℃。。ρ(COD)300mgL。SBRMESBRCOD,2,2。2,MESBRCOD。,COD90%。5℃,COD93%,SBR15%。MESBR,,,;,MESBR,。,MESBRCOD。2 COD 2.2 低温对两系统有机物降解速率的影响BODBOD,BOD。BOD(Eckenfelder),(1):Fw=La-LeSa·t=KLe(1) Fw———BOD5,kg(kg·d);La、Le———ρ(BOD5),mgL;Sa———,mgL;K———BOD5;t———,h。,(Phelps),(2):K2K1=θT2-T1(2):K2、K1T2、T1。θ,。,20℃5℃BOD,BODK。3。SBR20℃5℃,K0.01240.0064,。,,,BOD。K(2),SBRθ1.045,[1]θ,SBR。MESBR20℃5℃,K39 2009122763 SBRMESBRBOD50.00840.0061,SBR。20℃,MESBRKSBR,,。5℃,MESBRSBRK,MESBR,SBR。K(2),MESBRθ1.021,SBR,MESBRSBR。2.3 温度对两系统脱氮效果的影响2.3.1 NH3-Nρ(NH3-N)25mgL,SBRMESBRNH3-N,4。4 NH3-NSBR20℃10℃,NH3-N,77.4%67.4%。,NH3-N,5℃58.4%。MESBRNH3-N89.0%,,5℃NH3-N77.9%。MESBRNH3-NSBR。2.3.2 TN5℃,MESBRSBRTN51.4%23.5%,。MESBR18.6%,SBR26.5%。,[2],TN。,,SBR,,。MESBR,,,。:。2.3.3 NO-2-N5℃,SBRNO-2-N,1mgL,2mgL,40 200912276MESBRNO-2-N,。,[3]。,,,NO-2-N。,,NO-2-N。SBRNO-2-N。MESBR,NO-2-N。2.4 低温对两系统污泥沉降性能影响的比较20,155℃,4h,30min,。:20℃,MESBRSBR,SVI120mLg,SBR。,,15℃5℃,5。5 5,SBR。MESBR,15℃5℃。MESBRSBR。MESBR,,;,,。3 1)COD300mgL,SBR20℃5℃COD89%77.8%,;MESBRCOD90%。,MESBRSBRθ1.0211.045,MESBRSBR。MESBR,,。2)NH3-N25mgL,SBR20℃5℃,NH3-N77.4%58.4%;MESBRNH3-N89.0%77.9%。TN,MESBR18.6%,SBR26.5%。,SBRNO-2-N。。MESBRSBR。3)SBRSVI,MESBRSVI,MESBRSBR。[1] ,,.[J].,2005,25():171-173.[2] RustenR,HemLJ,ΥdegaardH.Nitrogenremovalfromdilutewasterwaterincolddimateusingmoving-bedbiofilmreactors[J].WaterEnvironRes,1995,67(1):65-74.[3] Urbainetal.Bioflocculationinactivedsludge:ananalysticapproach[J].WatRes,1993,27(5):829-838. 150090 202 2601E-mail irene501@tom.com2009-02-2341 200912276
本文标题:不同温度下MESBR工艺和传统的SBR工艺对比试验研究马春艳
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