BioDopp工艺在CASS工艺升级改造中的应用

2020/2/28BioDopp工艺在CASS工艺升级改造中的应用https://x.cnki.net/read/article/xmlonline?filename=HGGS201903014&tablename=CJFDTOTAL&dbcode=CJFD&topic=&fileSourceType=1&taskId=…1/7工业用水与废水,2019,03,61-64BioDopp工艺在CASS工艺升级改造中的应用ApplicationofBioDoppcraftinCASSprocessupgradingandreconstructionLUYin-daPENGXiu-juHEYongZHANGLeiTAOJingZHAOQiangSouthwestMunicipalEngineeringDesignandResearchInstituteofChinaLongchangWaterworksCompanyBeijingBHTEnvironmentTechnologyCo.,Ltd.卢殷达彭秀菊何勇张雷陶晶赵嫱中国市政工程西南设计研究总院有限公司隆昌市自来水公司北京博汇特环保科技股份有限公司摘要:针对目前以CASS工艺为代表的污水处理厂受限于占地面积,难以实现就地提标改造的问题,西部某县城污水处理厂采用BioDopp工艺对其进行了升级改造,将已建CASS池增加内部隔墙,进行功能区划分,利用空气提推,实现硝化液的回流及池内循环,在不单独设置泥水分离区的情况下实现了固液分离,同时实现了厌氧区、缺氧区、曝气区、泥水分离区各处理单元的有机结合。实践表明,在设计进水条件下,改造后的生化池出水CODCr、NH3-N、TN的平均质量浓度分别为33.30、1.26、9.75mg/L,同时出水TP及SS也达到了GB18918—2002《城镇污水处理厂污染物排放标准》中的一级A标准。关键词:BioDopp一体化结构CASS城镇污水升级改造作者简介：卢殷达(1995-),男,四川成都人,设计工程师,本科,学士,主要从事市政工程设计,(电子信箱)819469054@qq.com。Abstract：InviewoftheproblemthatsewagetreatmentplantrepresentedbyCASSprocessislimitedbyfloorspaceandishardtorealizeon-siteupgradingandreconstruction,asewagetreatmentplantinacountytowninwesternChinaadoptedBioDoppcrafttoupgradeandreconstructtheoriginalprocess,throughaddinginternalpartitions,dividingfunctionaldistricts,utilizingairliftingandpushing,nitrifyingliquidrefluxandtankinternalrecyclewereachieved.Moreover,solid-liquidseparationwasrealizedthroughaspecialtreatmentstructuredesignwithoutanindividualmud-waterseparationzone;besides,organiccombinationofeachprocessingunitsofanaerobiczone,anoxiczone,aerationzoneandmud-waterseparationzonewasalsorealized.Thepracticalresultsshowedthat,underthedesigninfluentwatercondition,theaveragemassconcentrationsofCODCr,NH3-NandTNintheeffluentwaterfromthereconstructedbiologicaltankwere33.30,1.26and9.75mg/Lrespectively,moreover,theeffluentTPandSSconcentrationsalsomettherequirementofgrade1levelAofGB18918—2002DischargeStandardofPollutantsformunicipalWastewaterTreatment.Keyword：BioDopp，integrationstructure，CASS，townsewage，upgradingandreconstruction2020/2/28BioDopp工