毕业设计-重庆市界石组团排水工程(条件四)
166页1、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(条件四) 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O一二年六月Graduation Design (Thesis) of Chongqing UniversitySewerage Sstem of JieShi Residential Cluster, Chongqing(condition 1) Undergraduate: Tang ShuangSupervisor: Li Zhe Major: Water and Wastewater EngineeringFaculty of Urban Construction and EnvironmentEngineering, Chongqing UniversityJune,2012摘要摘 要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。组团规划期人口规模为2015年达5.1万人,至2020年达6.8万人。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
2、雨、污分流制。污水经管网收集输送至污水处理厂,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A2O工艺,处理流程为:进水中格栅提升泵房细格栅沉砂池A2O反应池辐流沉淀池接触消毒池出水;污泥处置采用机械浓缩脱水,经脱水后污泥直接外运,污泥处理上清液回流至中格栅。污水厂近期设计规模为1.9万m3/d,远期设计规模为2.85万m3/d,远期总占地2.68公顷,近期建设留有远期用地。关键词:排水管网,雨污分流制,污水处理,A2OABSTRACTABSTRACTJieshi housing cluster is located in the drainage area of Huaxi river,the physiognomy of which mainly ap
3、pears in highland,with large fluctuation in hypsographic feature.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 housing cluster is 51,000 in 2015,and up to 68,000 in 2020.The drainage project of Jieshi housing cluster consists of two part,the drainage system and wastewater disposal.Separated drainge system is adopted in this project,in which the rainwate
4、r is passed through a different drain from the sewer containing the swage.The sewage is collected and carried to the sewage treatment plants,and released into the water afeter proper disposal.While the rain water is discharged into the water directly without any disposal. The flood contral standard is the high flood level which is expected to happen during twenty years.The drainage system is designed in the population scale in 2020.The wasterwater treatment plant is planed to build in the northw
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