LIN Xue-jun,DU Sui,DAI Li-feng,et al.Environmental Effect Analysis of Interception Ratio Based on SWMM Model[J].China Water & Wastewater,2021,37(5 5):111-115.
Environmental Effect Analysis of Interception Ratio Based on SWMM Model
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
5 5
Page:
111-115
Column:
Date of publication:
2021-03-01
- Abstract:
- Due to the limitation of subjective and objective factors, such as the importance of reconstruction, time sequence, economic condition and reconstruction difficulties, etc, the combined sewer system in many old urban districts has been preserved till now. In this study, SWMM model was used to simulate and evaluate pollutants reduction in urban combined sewer area, which aimed to provide reference for interception ratio and construction direction of combined sewer system. When the interception ratio was no less than 2, the combined sewer system could achieve the pollutants interception performance equal to that of the separate sewer system. However, the combined sewer system achieved the pollutants reduction performance equal to that of the separate sewer system only when the interception ratio was no less than 5. In urban combined sewer area, it is necessary to transform the combined sewer system into separate sewer system as soon as possible, or increase the construction of terminal treatment facilities.
Last Update:
2021-03-01