LiJirui,CaoFuren,PengJunhui,et al.Practice of Digital and Precision Governance for Low Concentration and High Water Level Drainage Pipe Networks in Southern Cities[J].China Water & Wastewater,2026,42(14):150-156.
南方城市低浓度高水位排水系统数字化精准治理
- Title:
- Practice of Digital and Precision Governance for Low Concentration and High Water Level Drainage Pipe Networks in Southern Cities
- Keywords:
- low concentration; high water level; external water intrusion; water quality and quantity balance; digital governance; southern cities
- 摘要:
- 针对南方城市普遍存在的排水系统低浓度、高水位运行难题，以海口市美舍河流域为研究对象，通过构建“管网地理信息系统（GIS）+在线监测”数字底座，优化形成适用于“外水入侵+溢流污染”复合工况的水质水量平衡分析方法，实现外水入侵的量化分析与空间定位；建立数据驱动的设计、排查、施工、运维协同动态治理模式。在开挖范围仅占服务区域16.7%的有限条件下，实现晴天外水入侵量削减92.2%；污水处理厂进水BOD?年均值从36.9 mg/L提升至82.9 mg/L（增幅为124.7%）；污水管道水位从满管状态恢复至设计充满度以下；美舍河下游水质稳定达到《地表水环境质量标准》（GB 3838—2002）的Ⅴ类标准。实践表明，数字化精准治理模式可在最小工程扰动条件下实现高效治理，为南方城市老城区排水管网提质增效提供可复制路径。
- Abstract:
- Aiming at the prevalent challenges of low concentration and high water level operation of drainage systems in southern Chinese cities, this study takes the Meishe River basin in Haikou as the research object. A digital base integrating “pipe network GIS + on-line monitoring” was constructed, and an optimized water quality and quantity balance analysis method adapted to the combined working conditions of “external water intrusion + overflow pollution” was developed, realizing the quantitative analysis and spatial positioning of external water intrusion. A data-driven collaborative dynamic governance model covering design, investigation, construction, and operation and maintenance was also established. Under the limited condition that the excavation area only accounts for 16.7% of the service area, remarkable governance effects have been achieved: the volume of external water intrusion in dry weather has been reduced by 92.2%; the annual average BOD- concentration of the influent at the sewage treatment plant has increased from 36.9 mg/L to 82.9 mg/L (a growth rate of 124.7%); the water level of sewage pipelines has recovered from the full-pipe state to below the designed filling degree; and the water quality in the lower reaches of the Meishe River has stably met the class V standard for surface water. The above practice demonstrates that the digital precision governance model can realize efficient governance with minimal engineering disturbance, providing a replicable approach for the quality and efficiency improvement of drainage pipe networks in the old urban areas of southern cities.
相似文献/References:
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