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1、中國(guó)環(huán)境科學(xué)2014,34(7):1734-1739ChinaEnvironmenta1Science基于數(shù)學(xué)模型的多模式AAO系統(tǒng)運(yùn)行優(yōu)化研究周振,胡大龍,吳志超,王志偉,杜興治,蔣玲燕,喬衛(wèi)敏(1上海電力學(xué)院環(huán)境與化學(xué)工程學(xué)院,上海200090;2.同濟(jì)大學(xué)環(huán)境科學(xué)與工程學(xué)院,污染控制與資源化研究國(guó)家重點(diǎn)實(shí)驗(yàn)室,上海200092;3.上海城投污水處理有限公司,上海201203)摘要:構(gòu)建了綜合考慮出水水質(zhì)、污泥產(chǎn)量和系統(tǒng)能耗的運(yùn)行成本指數(shù)CPI,并利用數(shù)學(xué)模型對(duì)多模式厭氧/缺氧/好氧(AAO)系統(tǒng)的AAO、倒置AAO(RAAO)
2、和缺氧/好氧(AO)3種模式進(jìn)行對(duì)比優(yōu)化研究.在處理成本相近的前提下,在污泥齡5-25d范圍內(nèi)AAO模式的污染物去除效率和聚磷菌濃度明顯高于RAAO和AO模式.在運(yùn)行模式篩選的基礎(chǔ)上,通過(guò)回流比優(yōu)化確定了排放標(biāo)準(zhǔn)約束下AAO工藝的達(dá)標(biāo)運(yùn)行區(qū)域和最佳運(yùn)行工況.動(dòng)態(tài)模擬結(jié)果表明,優(yōu)化工況能夠顯著改善出水水質(zhì),出水高于一級(jí)A的時(shí)間由78.4%下降至37.7%,CPI降低3.9%.關(guān)鍵詞:污水處理;優(yōu)化:厭氧/缺氧/好氧工藝;活性污泥;數(shù)學(xué)模型中圖分類號(hào):X703文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000—6923(2014)07—1734—06Mo
3、del-basedoptimizationofthemultimodeanaerobic/anoxie/aerobicsystem.ZHOUZhen,HUDa-long,WUZhi-chao,WANGZhi—wei,DUXing-zhi,JIANGLing-yan,QIAOWei-min(1.CollegeofEnvironmentalandChemicalEngineering,ShanghaiUniversityofElectricPower,Shanghai200090,China;2.CollegeofEnvironment
4、alScienceandEngineering,StateKeyLaboratoryofPollmionControlandResourceReuse,TongjiUniversity,Shanghai200092,China;3.ShanghaiChengtouWastewaterTreatmentLimitedCompany,Shanghai201203,China).ChinaEnvironmentalScience,2014,34(7):1734-1739Abstract:Thecostperformanceindex(CP
5、I)ofawastewatertreatmentplantoperatingwithmultimodeanaerobic/anoxic/oxic(AAO)systemwascalculatedbasedonefluentquality,sludgeproductionandenergyconsumptionusingamathematicalmode1.ThemultimodeAAOsystemcouldbeoperatedunderthreemodes:AAO,reversedAAO(RAAO)andanoxic/oxic(AO)
6、,andCPIforeachmodeWasstudiedandcompared.Onthepromiseofsimilaroperationcosts,theAAOmodeshowedhigherpollutantsremovaleficiencyandconcentrationofphosphorus—accumulatingorganismsthanRAAOandAOmodesatsludgeretentiontimeof5-25d.Theoptimaloperationparametersandqualifiedoperati
7、onalregionunderdischargestandardrestraintwereestablishedfortheAAOprocessbyregulatingrecirculationratios.Dynamicsimulationresultsshowedthatundero~imizedoperatingcondition,efluentqualitywassignificantlyimprovedwithpercentageofviolationdecreasedfrom78.4%to37.7%.a(chǎn)ndtheCPIi
8、ndexwasreducedby3.9%.Keywords:wastewatertreatment;optimization;anaerobic/anoxic/aerobicprocess;activatedsludge;mathem