CHENMei-juan,LIWei-ying,ZHUXiao-yuan,et al.Design of Regulation and Storage System for Combined Overflow Pollution Control in the Longtanxi Lake Area of Beijing[J].China Water & Wastewater,2024,40(18):71-74.
Design of Regulation and Storage System for Combined Overflow Pollution Control in the Longtanxi Lake Area of Beijing
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第18期
Page:
71-74
Column:
Date of publication:
2024-09-17
- Keywords:
- combined sewer overflow; silicon sand honeycomb filtration and purification technology; regulation and storage tank
- Abstract:
- Longtanxi Lake, located in the downtown area of Beijing, undertakes the drainage of rainwater and sewage in the upper reaches through underground ditches. During heavy rain, the combined overflow water in the underground ditches is discharged into Longtanxi Lake, resulting in a deterioration of the lake’s aquatic environment. In order to effectively alleviate the pollution caused by the combined sewer overflow in Longtanxi Lake and comprehensively consider the governance goals of water environment and water safety, the project addresses this issue by installing an innovative regulation and storage system at the bottom of the lake with an effective volume of 62 000 m3 to capture and detain the combined overflow. The regulation and storage tank system adopts silica sand honeycomb structure, which is convenient for the combined overflow to be filtered and purified before being discharged. After the project is implemented, the average annual overflow frequency shall not exceed 4 times in flood season, which can effectively alleviate the pollution caused by the combined overflow. During non?flood season, the system enables the lake water to be circulated and purified.
Last Update:
2024-09-17