Issue 5, 2024

Towards the cost-effective design of stormwater infiltration trenches: a hybrid model integrating cost–benefit analysis and an analytical stochastic approach

Abstract

Infiltration-based low-impact development practices are effective in sustainable urban stormwater management. The current design criteria (or design rainfall depth) for infiltration trenches in China rely on the requirements of the total annual runoff control rate. However, without considering the cost benefits, such a design criterion may overestimate the facility size and not be cost-effective. By integrating an analytical stochastic model for quantifying the runoff capture efficiency of infiltration trenches with two types of life-cycle cost approaches, this study proposed an analytical tool to determine more appropriate design criteria. An example case study of infiltration trenches implemented in Beijing, China, was performed to evaluate stormwater control performance and costs. The results indicate that the current design rainfall depth at the 75th to 85th percentiles obtained using rainfall event data following the method recommended by the design guideline may be overestimated and not cost-effective. The more economically effective design standard is recommended to range between 26.2 and 40 mm under different design conditions at the 75th to 85th percentiles, with a contributing catchment area of less than 4500 m2 and soil infiltration rate between 5 and 25 mm h−1. Substantial economic savings can be achieved with lower but proper design criteria, and the proposed analytical approach is thus recommended for policy makers for the cost-effective design of infiltration trenches.

Graphical abstract: Towards the cost-effective design of stormwater infiltration trenches: a hybrid model integrating cost–benefit analysis and an analytical stochastic approach

Supplementary files

Article information

Article type
Paper
Submitted
28 Dec. 2023
Accepted
13 Marts 2024
First published
13 Marts 2024

Environ. Sci.: Water Res. Technol., 2024,10, 1108-1121

Towards the cost-effective design of stormwater infiltration trenches: a hybrid model integrating cost–benefit analysis and an analytical stochastic approach

J. Wang, Y. Diao, S. Cao, J. Wang, J. Jia and Y. Guo, Environ. Sci.: Water Res. Technol., 2024, 10, 1108 DOI: 10.1039/D3EW00963G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements