EGSB反应器处理焦化废水的启动试验研究_董春娟
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2020-01-26 17:48:11
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EGSB反应器处理焦化废水的启动试验研究董春娟1,王海会2,陈素云1,张晋华1,吕炳南3(1.太原大学环境工程系,山西太原030009;2.中北大学化工与环境学院,山西太原030051;3.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090)摘要:在常温下,对接种市政消化污泥和少量颗粒污泥的EGSB反应器依次进行了啤酒废水快速启动和焦化废水快速驯化试验研究,以期寻求EGSB反应器处理焦化废水的快速启动方法。结果表明,采用啤酒废水能够在10d左右快速启动EGSB反应器;采用逐渐提高进水中焦化废水比例的方法,能够实现对EGSB反应器中颗粒污泥的快速驯化,此阶段历经6个月,在焦化废水COD高达2200mg/L左右、进水流量为1.2L/h、有机负荷为5.6kgCOD/(m3·d)左右、HRT为10h、回流比为10∶1、液体上升流速为3.1m/h的条件下,EGSB反应器对COD的去除率能够达到56.2%。回流稀释在一定程度上弱化了焦化废水的毒性作用,而且相对较高的液体上升流速强化了传质效果,使得EGSB反应器在处理高浓度焦化废水时能够高效稳定运行。关键词:EGSB反应器;焦化废水;消化污泥;颗粒污泥;启动;驯化中图分类号:X703文献标识码:C文章编号:1000-4602(2011)09-0091-04基金项目:山西省科技攻关项目(2007031104-1);太原市科技发展计划项目(07021003、091008)StartupExperimentalResearchofEGSBReactorforTreatmentofCokingWastewaterDONGChun-juan1,WANGHai-hui2,CHENSu-yun1,ZHANGJin-hua1,LVBing-nan3(1.DepartmentofEnvironmentalEngineering,TaiyuanUniversity,Taiyuan030009,China;2.SchoolofChemicalEngineeringandEnvironment,NorthUniversityofChina,Taiyuan030051,China;3.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China)Abstract:ToobtaintherapidstartupofEGSBreactorfortreatmentofcokingwastewater,therap-idstartupusingbrewerywastewaterandthequickacclimationusingcokingwastewaterinEGSBreactorseededwithanaerobicdigestionsludgeandasmallamountofgranularsludgewerestudiedunderambienttemperature.TheresultsindicatethattheEGSBreactorcanbestartedupwithin10dwhenusingbrewerywastewater.ThequickacclimationofgranularsludgeintheEGSBreactorcanbeachievedbygraduallyincreasingthecokingwastewatersupplementratio,andthisacclimationphaselasts6months.Withtheconditionsofabout2200mg/LofinfluentCOD,influentflowrateof1.2L/h,organicloadof5.6kg-COD/(m3·d),HRTof10h,recycleratioof10∶1andupflowvelocityof3.1m/h,theCODremovalratecanreach56.2%.Therecycledilutioncanreducethetoxicityofthecokingwastewatertosomeex-tent,andrelativelyhigherupflowvelocityintheEGSBreactorcanenhancethemasstransfers,whichen-·19·第27卷第9期2011年5月中国给水排水CHINAWATER&WASTEWATERVol.27No.9May2011suresthattheEGSBreactorcanoperateefficientlyandstablywhentreatinghighconcen
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