HOUWen-shuo,ZHOUGuo-hua,GETong-gang,et al.Design and Effect Evaluation of a New Volume-Runoff Stormwater Diverting Device[J].China Water & Wastewater,2023,39(9):103-108.
Design and Effect Evaluation of a New Volume-Runoff Stormwater Diverting Device
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第9期
Page:
103-108
Column:
Date of publication:
2023-05-01
- Keywords:
- initial stormwater; diverting device; sponge city; urban road
- Abstract:
- Stormwater collected on road has huge potential in the process of urban stormwater resource utilization. However, the quality of most stormwater is poor in the initial stage. As a diverting means, the initial stormwater diverting device can effectively separate the initial stormwater and the later stormwater. This paper proposed a new volume-runoff stormwater diverting device based on the analysis of the existing diverting device characteristics, carried out the specific design, and evaluated the performance. The diverting process of the device was related to the rainfall process, and the diverting standard was the runoff generated by rainfall in 30 minutes after considering the loss of 2 mm pavement filling rainfall. Under the experimental conditions, the diameter of diverting pipe meeting the diverting standard was logarithmically correlated with the rainfall intensity. The device had the best diverting performance on SS, while diverting rates of NH4+-N, NO3--N, TP and COD were relatively low. In addition, the performance of the device was basically consistent with the conclusions of other types of diverting devices in related studies.
Last Update:
2023-05-01