GONGXiao-lu.Process Design of Long-distance Tail Water Drainage Pipe[J].China Water & Wastewater,2024,40(6):53-59.
长距离尾水排江管工艺设计
- Title:
- Process Design of Long-distance Tail Water Drainage Pipe
- Keywords:
- sewage treatment plant; tail water; drainage pipe to river; discharge outlet; route; diffuser
- 摘要:
- 上海某污水处理厂扩建后规模达到40×104 m3/d,新建尾水永久排放管工程排放全量出水至长江新大堤外,在江底做深水排放。通过分析附近长江口区域的地形、水文、通航、环境影响等条件,选取了陆域段5.35 km和水域段1.91 km的排放路由。该工程包括2根DN2 400陆域管和2根DN2 000水域正常排放管以及1根应急排放管,二次穿越长江大堤,水域段采用钢管顶管施工,并设置上升管和排放喷口。排放管已建成并投入使用,效果良好,为改善地区水环境起到了重要作用,可以为类似工程提供参考借鉴。
- Abstract:
- The scale of a sewage treatment plant in Shanghai reached 40×104 m3/d after expansion, and the new permanent tail water discharge pipe project discharged all the effluent to the bottom of the Yangtze River outside the new levee. The discharge route of 5.35 km in land area and 1.91 km in water area section was selected by analyzing the topography, hydrology, navigation and environmental impact and other conditions of the nearby Yangtze River estuary. The project consisted of 2 underground pipes with diameter of DN2 400, 2 underwater discharge pipes with diameter of DN2 000 and 1 emergency discharge pipe, which crossed the Yangtze River embankment twice. The pipes in water section were constructed with steel pipe jacking and were equipped with rising pipe and discharge nozzle. The discharge pipe has been built and put into use with good performance, which plays an important role in improving the regional water environment and provides reference for similar projects.
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