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唐山学院毕业设计设计题目：氧化沟法处理城市废水的工艺设计系别：环境与化学工程系班级：12环本2班姓名：李增光指导教师：刘昆2006年6月8日氧化沟法处理城市废水的工艺设计摘要众所周知，地球是水的星球，水大概占到地球表面积的五分之四，然而地球的淡水资源确特别少。近些年来，随着中国城市化和工业化进程的发展，我国的污水废水排放也是与日俱增。城市污水的重要来源：（1）生活污水，主要来自于家庭生活用水，办公费谁公共设施废水和雨水。(2）工业废水，工业生产中用于冷却洗涤等的废水。城市污水里面所含生活污水较多，生化性良好，一般较好处理。本次设计的主要内容是80000m³/d的某城市污水处理厂氧化沟工艺设计，本次设计的主体工艺是改良式卡鲁塞尔氧化沟工艺，污水通过粗格栅，提升泵，细格栅，沉砂池，改良式卡鲁塞尔氧化沟，消毒间等各个工艺而达到出水要求。关键词：城市污水处理改良式卡鲁塞尔氧化沟主体工艺OxidationditchprocessofurbanwastewatertreatmentprocessdesignAbstractPlanet,itiswellknownthattheearthistaxwateraccountsforaboutofthesurfaceoftheearth,buttheearth'sfreshwaterresourcesisaparticularless.Inrecentyears,withthedevelopmentofChina'surbanizationandindustrializationprocess,sewagewastewa-teremissionsinChinaisalsogrowing.Animportantsourceofurbansewage:1.Thelifesewage,watermainlycomesfromthehomelife,officewhopublicfacilities,wastewaterandrainwater.2.Industrialwastewater,industrialproductionisusedforcoolingandwashingwastewater.Urbanwastewatercontainssomanydomesticsewageinside,biochemical,generalgoodprocessing.Themaincontentofthisdesignis80000maftera/dcitysewagetrea-tmentplantoxidationditchprocessdesign,themainbodyofthedesignprocessisimprovedcarrouseloxidationditchprocess,thesewagethroughthecoarsegrid,liftpump,finegrille,gritchamber,improvedcarrouseloxidationditch,betweeneachprocesssuchasdisinfectionandmeettherequirementsofthewater.Keywords:urbansewagetreatmentimprovedcarrouseloxidationditchmainprocess目录1引言................................................................................................................................12工艺设计.........................................................................................................................42.1设计水量..............................................................................................................42.2本次设计的各项进出水指标..............................................................................42.3处理程度计算：..................................................................................................42.4设计任务..............................................................................................................42.5设计依据..............................................................................................................42.6污水处理过程中的主要原则.............................................................................52.7排水出路..............................................................................................................52.8污泥出路..............................................................................................................53污水处理工艺方案选择.................................................................................................63.1设计原则..............................................................................................................63.2主要污水处理工艺的比较..................................................................................64主体构筑物的设计计算...............................................................................................124.1粗格栅的设计计算............................................................................................124.1.1设计参数.................................................................................................124.1.2设计计算.................................................................................................124.2提升泵................................................................................................................154.2.1提升泵的选型.........................................................................................154.3细格栅的设计计算............................................................................................154.3.1设计参数.................................................................................................154.4沉砂池的设计计算...........................................................................................184.4.2设计计算.................................................................................................184.5改良式卡鲁塞尔氧化沟的设计计算................................................................204.5.1设计计算参数.........................................................................................204.5.2设计计算.................................................................................................214.6二沉池的设计计算............................................................................................274.6.1设计计算参数.........................................................................................274.6.2设计计算.................................................................................................274.7消毒池................................................................................................................294.7.1投药量计算.............................................................................................294.7.2设备选型.................................................................................................294.8污泥浓缩池设计计算.......................................................................................