多段内循环厌氧反应器的气液流场及处理低浓度屠宰废水的研究

吴秉奇员袁圆袁段美娟圆袁周振猿袁刘淑杰员袁圆袁陈福明员袁圆袁刘旭圆渊1.深圳清华大学研究院深圳环境微生物资源开发与应用工程实验室袁广东深圳518057曰2.深圳市清研环境科技有限公司袁广东深圳518057曰3.湖南大学环境科学与工程学院袁长沙410082冤基金项目院多段内循环厌氧反应器气液流场研究渊JCYJ20150625160747150冤生物好氧和生物厌氧技术均适合处理可生化废水咱员暂袁通常袁生物好氧适合处理低浓度的有机废水摘要院基于废水厌氧生物处理技术的三阶段原理袁自行设计一种处理低浓度废水的多段内循环厌氧反应器遥采用云luent软件对反应器内气液两相流进行数值模拟研究袁重点研究曝气盘进气速度尧高径比和曝气盘安装高度对气液两相的流态影响袁以此探索反应器达到泥水充分混合的最佳工艺与结构设计参数遥根据模拟结果袁曝气盘进气速度为圆援远愿皂辕泽袁高径比为员援苑缘袁曝气盘安装高度为圆园皂皂时袁反应器内泥水混合和空间利用率达到最大化遥将本反应器应用于低浓度屠宰废水处理袁当水力停留时间为圆怨澡袁第一尧第二和第三反应室的悦韵阅平均容积负荷为员援苑圆尧员援源圆和园援远怨噪早咱悦韵阅暂辕渊皂猿窑凿冤时袁日处理量可达员援源源贼袁悦韵阅去除率可以持续稳定在缘园豫以上袁最佳达到苑缘豫遥关键词院多段内循环厌氧反应器曰Fluent曰气液流场曰屠宰废水中图分类号院载苑03.1文献标志码院粤文章编号院摇员园园怨原圆源缘缘渊圆园员9冤园1原园园19原园6Astudyofgas-liquidflowfieldofmultistageinternalrecycleanaerobicreactorandlowconcentrationslaughterwastewatertreatmentthereof宰哉月蚤灶早原择蚤员袁圆袁阅哉粤晕酝藻蚤原躁怎葬灶圆袁在匀韵哉在澡藻灶猿袁蕴陨哉杂澡怎原躁蚤藻员袁圆袁悦匀耘晕云怎原皂蚤灶早员袁圆袁蕴陨哉载怎圆渊1.ResearchInsituteofTsinghuaUniversityinShenzhen,EngineeringResearchCenterofEnvironmentalMicrobialResourcesDevelopmentandApplicationinGuangdong,Shenzhen518057;China;2.ShenzhenQingYanEnvironmentalTechnologyCo.Ltd.,Shenzhen518057,China;3.EnvironmentalScienceandEngineeringCollege,HunanUniversity,Changsha410082,China冤Abstract院Amultistageinternalrecycleanaerobicreactorforlowconcentrationwastewatertreatmentwasdesignedbasedonthree-stagetheoryofanaerobicbiologicaltechnologyforwastewatertreatment.Astudyofnumericalsimulationofgas-liquidtwo-phaseflowofthereactorwascarriedoutusingsoftwareFluent,theinfluenceofairinflowvelocity,height-diameterratioandinstallationheightofaerationdishonflowstateofgas-liquidtwo-phasewereemphaticallyinvestigated,soastoexploretheoptimalprocessandstructuredesignparametersofthereactorwhenreachingsludgeandwaterintensivemixing.Accordingtothesimulationresults,itcouldbeseenthat,fortheaerationdish,whentheairinflowratiowas2.68m/s,theheight-diameterratiowas1.75,theinstallationheightwas20nm,sludge-watermixingdegreeandspaceutilizationratioofthereactorreachedmaximum.Usingthesaidkindofreactortotreatlowconcentrationslaughterwastewater,whentheHRTwas29h,theaverage