LIWen-qiu,ZHANGWei,SUNYong-li,et al.Causes and Countermeasures of Periodic Overflow of Urban Drainage System in Dry Season[J].China Water & Wastewater,2023,39(10):17-22.
Causes and Countermeasures of Periodic Overflow of Urban Drainage System in Dry Season
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第10期
Page:
17-22
Column:
Date of publication:
2023-05-17
- Keywords:
- periodic overflow in dry season; operation of sewage pipe network with high liquid level; non-domestic sewage infiltration; tracing to the source and removal
- Abstract:
- The periodic overflow in dry season has negative impact on the centralized collection and treatment of urban domestic sewage. It is also unfavorable to the safety and operation stability of the drainage system. This paper discusses the causes of periodic overflow of urban drainage system in dry season including the following two aspects： Ⅰ) reduced storage capacity of the pipe network due to the long-term operation of sewage collection pipes with high liquid level, Ⅱ) non-domestic sewage discharge into the pipe network space, such as urban river and lake water, groundwater, mountain springs and streams, industrial enterprise wastewater, construction dewatering, commercial and recreational drainage, etc. On this basis, some engineering and management countermeasures and suggestions are put forward, such as gradually reducing the liquid level of sewage collection pipelines, focusing on the tracing to the source and removal of non-domestic sewage, strengthening supervision of drainage households and daily maintenance and management of pipe network.
Last Update:
2023-05-17