多级MBBR与A_2O工艺处理低C_N生活污水对比分析_杨文焕

第9期杨文焕,唐若凯,肖作义，等.多级MBBR与A2O工艺处理低C/N生活污水对比分析[J].环境科学与技术，2017，40（9）：131-135.YangWenhuan,TangRuokai,XiaoZuoyi,etal.Comparativeanalysisofmulti-levelMBBRprocessandA2/OprocesstreatinglowC/Nratiodomesticwastewater[J].En－vironmentalScience&Technology，2017，40（9）：131-135.多级MBBR与A2O工艺处理低C/N生活污水对比分析杨文焕1,唐若凯1,肖作义1*，李卫平1，范荣华2，肖明慧2，马长宝3，张敬朝1（1.内蒙古科技大学能源与环境学院，内蒙古包头014010；2.包头市排水产业有限责任公司，内蒙古包头014010；3.包头市鹿城水务有限公司，内蒙古包头014010）摘要：结合包头市某污水厂A2/O工艺的运行情况，对比分析多级MBBR与A2/O工艺对低碳氮比生活污水的处理效果及污泥减量化的性能。试验结果表明：多级MBBR工艺处理低碳氮比生活污水时，出水COD、总氮和氨氮平均值分别为23.1、10.2、2.07mg/L均达到《城镇污水处理厂污染物排放标准》一级A标准，其平均去除率分别为90.7%、85.2%、96.7%；各项指标均优于A2/O工艺，特别是TN能够稳定达标，解决了低碳氮比污水TN难以达标的问题。但是多级MBBR工艺除磷效果不佳，需要额外投加药剂化学除磷。多级MBBR工艺同时表明：反应器的污泥产率为0.12，约为A2/O工艺的1/4~1/5,污泥减量效果显著。同时多级MBBR工艺为A2/O工艺提标改造提供新的思路。关键词：低碳氮比；多级MBBR；A2/O；生物脱氮；污泥减量中图分类号：X505文献标志码：Adoi：10.3969/j.issn.1003-6504.2017.09.021文章编号：1003-6504(2017)09-0131-05ComparativeAnalysisofMulti-levelMBBRProcessandA2/OProcessTreatingLowC/NRatioDomesticWastewaterYANGWenhuan1,TANGRuokai1,XIAOZuoyi1*,LIWeiping1,FANRonghua2,XIAOMinghui2,MAChangbao3,ZHANGJingzhao1（1.CollegeofEnergyandEnvironment,InnerMongoliaUniversityofScienceandTechnology，Baotou014010,China;2.BaotouDrainageIndustrialCo.Ltd,Baotou014010,China;3.BaotouLuchengWaterAffairsCo.Ltd,Baotou014010,China）Abstract：CombinedwiththeoperationconditionofA2/OprocessinawastewatertreatmentplantinBaotouCity,multistageMBBRandA2/Oprocessarecomparedandanalyzedonthetreatmenteffectoflowcarbonandnitrogenratioofdomesticwastewaterandtheperformanceofsludgereduction.ThetestresultsshowthatusingthemultistageMBBRprocesstotreatlowcarbonratioofsewage,effluentCOD,totalnitrogenandmeanvalueofammonianitrogenarerespectively23.1mg/L,10.2mg/Land2.07mg/L,whichallhavereachedtheGradeIofUrbanSewageTreatmentPlantPollutantDischargeStandard,withaverageremovalratesof90.7%,85.2%,96.7%;theindicatorsareallbetterthanA2/Oprocess,especiallyforTNwhichcanreachthestandardstably,itsolvestheproblemofTNoflowcarbonratiosewagewhichisdifficulttoreachthestandard.However,themultistageMB