毕业设计（论文）-近期1.25万远期2.5万污水处理厂毕业设计.doc

重庆大学本科学生毕业设计（论文） 重庆市界石组团排水工程（条件二） 学 生： 学 号指导教师： 专 业：给水排水工程 重庆大学城市建设与环境工程学院 二OO九年六月 Graduation Design (Thesis) of Chongqing University Sewerage Sstem of JieShi Residential Cluster, Chongqing(condition 2) Undergraduate: Zhi Yue Supervisor: Gao Xv Major: Water and Wastewater Engineering Faculty of Urban Construction and Environment Engineering, Chongqing University， June，2009 摘 要 根据设计任务书原始资料，对界石组团进行污水管网、雨水管网和城镇污水处理厂的设计。 界石组团位于花溪河流域，以丘陵地貌为主。该组团受冬季风和夏季风影响，主导风向为偏北风，次主导风向为偏南风。2010年市区人口规模为4.8万人，2020年人口规模达到6.4万人。 界石组团排水工程包括排水管网工程和污水处理厂工程两部分。 界石组团排水管网采用雨、污分流制。污水经管网收集后由A、B两条主干管输送至污水处理厂，处理达标后排放入花溪河水体，雨水直接排放，防洪标准采用20年一遇防洪标准。排水管网按远期2020年人口规模设计。污水厂设在组团西北端，南部设一中途泵站提升污水。 界石组团水污染源主要为生活废水，次之为工业污染源，工业废水其主要含有化学需氧量、悬浮物及石油类。污水处理出水水质标准采用《城镇污水处理厂污染物排放标准》（GB18918-2002）中的一级标准B标准。污水处理厂污水处理工艺采用三沟式氧化沟工艺。 污水厂近期设计规模为1.25万m3/d，远期设计规模为2.50万m3/d，远期总占地2.86公顷，近期建设留有远期用地。 关键词：重庆市界石组团，排水管网，分流制，污水处理，三沟式氧化沟 ABSTRACT Dseign the pipeling system of sewerage and storm water as well as the wastewater treatment plant according to the requirement and the fundamental design data of Jieshi residence cluster. Jieshi residence cluster is located at the drainage area of Huaxi river, mainly in hilly topography. The whether is influenced by monsoon in winter and summer.The dominant wind direction is a deflection of boreas,and the secondary is a deflection of south wind.The population scale of Jieshi residence cluster is 48,000 in 2010,and up to 64,000 in 2020. The drainage project of Jieshi residence cluster consists of two part,the drainage system and wastewater disposal. Separate sewage system is selected all over the residence cluster. The discharged wastewater is collected by the sewage network and carried to the wastewater treatment plant by A,B trunk pipes. After proper disposal the treated water will releas into the Huaxi river. On the other hand the storm water is discharged into the river directly. The flood contral standard is the high flood level which is expected to happen during