MBR-法处理校园污水设计-论文-毕业设计

学士学位论文论文题目MBR法处理校园污水设计院系化学与环境工程学院专业环境科学姓名学号指导老师日期郑重声明本人郑重声明：本人所呈交的学位论文，在导师指导下独立完成，除文章中引用内容外，全部是阅读大量有关文献结合自己所想写下的作品，对本文有重大贡献的个人集体均已在文中有所提及，愿承担因此产生的法律责任与后果。声明人签名：2015年5月10日I摘要高校是人口居住集中的地方，每天产生大量的生活污水。人均日生活用水可按中国南方城市人均日生活用水量150L计算，再乘以污水系数0.8，得到人日均生活污水排放约为120L。三万人的学校一天就要产生3600m3生活污水，一年250天计算大约产生90万吨生活污水，这意味着每年要浪费27万t的水资源。因此设计一个合理可行的污水处理系统从而利用处理出水有十足的意义。此处考虑到学校地处市区，土地稀缺，故按实际情况可设计计算一个以MBR生物处理器为核心的生物处理系统。该系统具有处理效率高、出水标准高和占地面积小等特点。经验表明，经该类似系统处理后，出水水质可达国家杂用水标准。而本设计内容主要包括对格栅池的尺寸计算、格栅的尺寸计算选择、调节池的尺寸计算、调节池泵的选择、MBR池的尺寸计算、MBR膜组件的选择、MBR池水泵的选择、MBR膜清洗系统的设计以及工程造价的估计。关键词：生活污水；处理；MBR；计算；标准；工程IIABSTRACTCollegeisdenselyinhabitedareawhereagreatamountofsewageisproduced.Supposethepercapitadomesticwaterconsumptionis150L,mutiply0.8,theresultis120L,whichisthestudent'spercapitadomesticwaterconsumption.30,000studentsin250daywoulduseabout900,000twater,whichmeans270,000twatermaybewasted,thereforeit'sessencialtodesignasewagetreatmentsystem.AccordingtotheactualsituationofHubeiMinzuUniversity,aMBRbiologicaltreatmentsystemisrecommendedtodesign.Thesystemhasmanyfeatures,likehighefficiency,smallfootprintandhigheffluentstandardsandsoon.Experiencehasshownthatasimilarsystemthroughwhichthetreatedwaterqualityuptothenationalmiscellaneouswaterstandards.Themaincontentsofthedesignofthegridcellsizecomputing,gridcomputingtoselectthesize,adjustthesizeofthepoolofcomputing,regulationpoolpumpselection,MBRtanksizecalculation,MBRmembranemoduleselection,MBRPoolPumpSelection,MBRmembranecleaningsystemdesignandengineeringcostestimates.Keyword：sewage;treatment;MBR;calculatestandard;engineering目录摘要............................................................................................................IABSTRACT.................................................................................................II引言...........................................................................................................11绪论........................................................................................................21.1设计任务............................................................................................................21.1.1日污水处理量.........................................................................................21.1.2目标出水水质.........................................................................................21.2设计要求............................................................................................................21.3设计依据............................................................................................................21.4设计原则............................................................................................................32工艺流程说明............................................................................................42.1流程图................................................................................................................42.2流程说明............................................................................................................42.2.1污水处理说明.........................................................................................42.2.2污泥处理说明.........................................................................................42.2.3工艺说明.................................................................................................53设计计算....................................................................................................63.1化粪池................................................................................................................63.2格栅....................................................................................................................63.2.1设计数据.................................................................................................63.2.2设计计算.................................................................................................73.2.3格栅池参数...........................................................................................103.3调节池...............................................................................................................113.3.1设计数据................................................................................................113.3.2设计计算................................................................................................113.3.3调节池技术参数...................................................................................123.4MBR池............................................................................................................133.4.1膜组件选型...........................................................................................133.4.2池体计算...............................................................................................133.5曝气鼓风机选择..............................................................................................153.5.1曝气量计算...........................................................................................153.5.2曝气鼓风机选择.....................................................