18 万吨城镇污水处理厂提标扩建工程方案设计-管网工程设计摘 要本论文以广东省珠海市斗门区井岸镇污水处理厂为设计对象，本项目的设计范围为井岸污水处理厂提标、扩容改造工程的配套管网系统。该厂主要服务于珠海市斗门区井岸城区及部分新青片区。由于城市的扩张和社会的发展，该厂原设计的 3.5 万 m3/d 的最大容量已经不再适应现实生活每日的污水产生量，而该厂原本遵循的一级 B 排放标准《城镇污水处理厂污染物排放标准》（GB18918-2002）也已不再适应环境规划需求，现急需提标扩建为 8 万 m3/d，一级 A 排放标准《城镇污水处理厂污染物排放标准》（GB18918-2002）。然而，一座完整的污水处理厂不仅需要各类构筑物，还需要建设一套完善的污水管网系统，来满足各构筑物间工作需要，以及处理完成后的污水排放问题。因此，本论文设计将根据提标改造后的新井岸镇污水处理厂平面布置图，设计配套的管网系统。本套管网系统将串联起原一期构筑物和二期构筑物，二者处理后的污水将汇合入提标构筑物，经提标处理后排放至西侧圣狮涌，最后排入鸡啼门水道。关键词：污水处理厂 提标扩建 管网设计2AbstractThis paper takes Jing'an town sewage treatment plant in Doumen District, Zhuhai City, Guangdong Province as the design object. The design scope of this project is the supporting pipe network system of Jing'an sewage treatment plant's standard raising and capacity expansion project. The factory mainly serves Jingan urban area and some Xinqing areas in Doumen District, Zhuhai City. Due to the expansion of the city and the development of the society, the original designed maximum capacity of 35000 m3 / D of the plant is no longer suitable for the daily sewage production in real life, and the original level-b discharge standard of the plant, 《Discharge standard of pollutants for urban sewage treatment plant 》(GB18918-2002), is no longer suitable for the needs of environmental planning. Now it is urgent to propose the standard of 80000 m3 / D and Level-A discharge standard《Discharge standard of polluta...
