竹园污水厂闭式双泥龄工艺活性污泥数学模型的参数研究_阮慧娟
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2020-03-03 17:44:49
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竹园污水厂闭式双泥龄工艺活性污泥数学模型的参数研究*阮慧娟1徐高田1,2尚飞宵1许莉1(1.上海大学环境与化学工程学院,上海200044;2.上海市环境保护局,上海200050)摘要:竹园第二污水厂采用一种闭式双泥龄新型工艺。以活性污泥1号模型(ASM1)为基础,测定污水厂的进水水质特性参数、异养菌产率系数(YH)和异养菌衰减系数(bH),为后续工艺模型的建立和校正提供基础数据。结果表明:竹园第二污水厂进水易生物降解有机物(Ss)、慢速生物降解有机物(Xs)、溶解态惰性有机物(SI)、异养菌(XBH)、颗粒态惰性有机物(XI)占总COD的平均比值分别为20.0%、32.1%、17.4%、9.6%、20.9%。进水氨氮(SNH)、溶解态可生物降解有机氮(SND)、颗粒态可生物降解有机氮(XND)占TN的平均比值分别为71.5%、10.0%、18.5%。闭式双泥龄工艺平行组合中的传统活性污泥池和A/O池分支的异养菌产率系数(YH)分别为0.68和0.78,异养菌衰减系数(bH)分别为0.501d-1和0.621d-1。关键词:活性污泥1号模型;闭式双泥龄工艺;模型参数THEPARAMETRICSTUDYOFACTIVESLUDGEMODEL(ASM1)FORCLOSEDTWO-SLUDGETREATMENTPROCESSOFZHUYUANWASTEWATERTREATMENTPLANTRuanHuijuan1XuGaotian1,2ShangFeixiao1XuLi1(1.SchoolofEnvironmentalandChemicalEngineering,ShanghaiUniversity,Shanghai200044,China;2.ShanghaiEnvironmentalProtectionBureau,Shanghai200050,China)Abstract:ThebiologicaltreatmentofZhuyuanNo.2WWTPisanewclosedtwo-sludgetreatmentprocess.ActivatedSludgeModelNo.lwasusedasabaseformodellingoftheactivatedsludgesystem.Thecomponentconcentrationsinwastewater、theheterotrophicyieldcoefficient(YH)andheterotrophicdecaycoefficient(bH)parametersoftheactivatedsludgesystemhadbeenmeasuredinZhuyuanNO.2WWTPandthesedataprovidetheessentialdataformodelestablishmentandmodelcorrection.Theresultsshowedthat:theratiosofreadilybiodegradablesubstrate(Ss),slowlybiodegradablesubstrate(Xs),solubleinertsubstrate(SI),heterotrophicbiomass(XBH)andparticulateinertsubstrate(XI)tototalCODare20.0%,32.1%,17.4%,9.6%and20.9%,respectively.Theratiosofammonium(SNH),solublebiodegradableorganicnitrogen(SND)、particulatebiodegradableorganicnitrogen(XND)toTNare71.5%,10.0%and18.5%,respectively.Theheterotrophicyieldcoefficient(YH)ofthetraditionalactivatedsludgeprocessbranchandtheA/Oprocessbranchoftheclosedtwo-sludgetreatmentprocessare0.68and0.78,respectively;heterotrophicdecaycoefficient(bH)is0.501d-1and0.621d-1,respectively.Keywords:No.1modelofactivatedsludge;closedtwo-sludgetreatmentprocess;modelparameters*上海市科委科研计划项目。1工程概况上海竹园第二污水处理厂的进水中生活污水与工业废水比例约为85%和15%,其采用国内首创的闭式双泥龄A/O新型工艺[1],目前无成熟的
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