ZHOUShui-liang,LIUDong-dong,TANGLei,et al.Comprehensive Evaluation of Inflow and Infiltration in Pump Drainage Sewage System[J].China Water & Wastewater,2022,38(23):74-79.
Comprehensive Evaluation of Inflow and Infiltration in Pump Drainage Sewage System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第23期
Page:
74-79
Column:
Date of publication:
2022-12-01
- Abstract:
- Rainfall-derived inflow and infiltration is the main problem affecting the operation of sewage networks. The evaluation of inflow and infiltration is an important task to improve the management level of sewage networks. The discharge flow of pump drainage sewage systems is controlled by their pump stations. However, the pump station is often stopped due to the restriction of the load of the sewage treatment plant under heavy rain conditions. Therefore, traditional methods based on discharge flow as the main evaluation basis are not applicable. This paper comprehensively analyzed the change rules of water level, flow and water quality in pump opening events of Dushan 1# sewer system in PH city under three types of operating conditions, so as to evaluate the impact of inflow and infiltration. In the drainage system, there was both direct inflow during rainfall and infiltration caused by rainfall. However, it was mainly direct inflow, with relatively small infiltration. The water quality analysis showed that conductivity had a good response to the change of sunny and rainy days. In addition, conductivity was relatively easy to detect, so it could be used as the evaluation index of inflow and infiltration.
Last Update:
2022-12-01