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ID:36634037
大小:2.38 MB
页数:124页
时间:2019-05-13
《氧化塘扩散因素研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、四川大学硕士学位论文氧化塘扩散因素研究姓名:宋若远申请学位级别:硕士专业:环境工程指导教师:王向东20060430折流式扩大模型:Pe;而兰斋研究所得Pe的经验公式可较好地应用于带纵向扩散推流反应器模型和串联完全混合反应器模型.应用桩西联氧化塘和现河氧化塘的运行数据对单池式扩大模型进行检验,所得的平均相对偏差均小于±2%。说明本研究Pe的计算公式适用于带纵向扩散推流反应器和完全混合串联反应器两种模型,并具有较好准确性和实践性。应用所得单池式扩大氧化塘经验公式所建立的数学模型,对现河氧化塘进行改造设计,在增设导流墙后,预计现河氧
2、化塘的处理能力可从目前的40000m3/d增加到60000m3/d。在长宽比相同时,横向折流式氧化塘水流状况优于纵向折流式氧化塘水流状况;从节约投资成本的角度出发,折流式氧化塘设计长宽比不应超过8。本研究为氧化塘处理技术提供了可靠的理论支持,可供实际氧化塘优化、设计以及改造时使用。关键词:氧化塘示踪实验流动模型传质准数Pe扩散因素数学模型ⅡStudyonDiffusionFactorofOxidationPondEnvironmentEngineeringPostgraduate:SONGRuo-yuanSupervisor:
3、WANGXiang·dongOxidationpondiSonekindofwastewatertreatmentestablishments,whichiSfeaturedbylessinvestment,energye,onsumeandmanagementexpenses.Oxidation-pondiswiddyappliedtotreatmunicipalsewageandvariousindustrialwastewatcrsinthedevelopedordevelopingcountries,andhaveob
4、tainedremarkableenvironmentalbenefitsandsocietalefficiency.Inrecentyears,Shenglioilfieldadoptedittotreatoilextractionwastewater,whichcontainedconcentratedsalt,andtheeffectWasfairlygood.However,becauseofthecomplexityofreactionsintheoxidationpondandthevarietyoffactors
5、whichinfluencedtheremovaloftheorganicmaterials,designmethodsbasedonrigidtheoryhavenotbefoundedSOfar,andthedesignisstilllimitedinexistingexperiencedataandformulas,whichimpedesthedevelopmentofoxidationpondtechnology.Therefore,itisnecessarytomakefurtherstudyonthemathem
6、aticalmodelsofoxidationpondandestablishuniversalmathematicalmodeltoguidetheoptimizationdesignandlarge-scaledesign,whichisofgreatimportancetopromotetheincessantdevelopmentoftheoxidationpondwastewatertreatmenttechnology.Inthisresearch,acid嘶ghtredGRwasused龉tracertomake
7、traceexperimentsonsingleandbaffledoxidationpondundervariousconditionsandthecurrentcharacteristicsandmasstransferconditionswasstudied.n圮resultsindicatedthattheflowformintheoxidationpondmodelWasobviouslydifferentfromtheidealplugflowandcomplete-mixingflowmodel,buttheta
8、ndemmodelcombinedofplugflowmodelwithverticaldiffusion(PFD)andComplete-mixingmodeIcoulddescribethecharacteriSticsofmodeloxidationpondverywe
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