LIUYang,ZHENGXin-xin,ZHUANGZhao-heng,et al.Investigation and Regulation of Old Urban Combined Culverts Based on Quality and Efficiency Improvement of Sewage System[J].China Water & Wastewater,2024,40(24):106-111.
Investigation and Regulation of Old Urban Combined Culverts Based on Quality and Efficiency Improvement of Sewage System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第24期
Page:
106-111
Column:
Date of publication:
2024-12-17
- Keywords:
- combined culvert; diversion of stormwater and sewage; quality and efficiency improvement; investigation and regulation
- Abstract:
- It is difficult to investigate and regulate combined culverts in old urban areas. In order to solve the underground culvert problem and meet the requirements for improving the quality and efficiency of the sewage system, the investigation and renovation project of underground culverts in an old urban area of Sichuan Province proposes a systematic regulation idea of “one outfall, one strategy” for the combined culverts, based on accurately tracing the pollution source of the culvert inner outfall by emerging technologies such as drones, unmanned boats and side-scan sonar. Targeted regulation plans are formulated for the inner outfall of different types, sizes and flow, and engineering measures such as intercepting pipe are adopted to achieve accurate pollution control goals. After transformation, the COD concentration in the downstream estuary of combined culverts shows an obvious downward trend, while the influent COD concentration of sewage collection system shows an increasing trend. The expected goals of improving both the quality and efficiency of black and odorous water treatment and sewage system have been achieved.
Last Update:
2024-12-17