Exploratory Assessment of SUDS Feasibility in Nhieu Loc-Thi Nghe Basin, Ho Chi Minh City, Vietnam
Journal Title: International Journal of Environment and Climate Change - Year 2015, Vol 5, Issue 2
Abstract
Aims: In recent decades, Ho Chi Minh City, Vietnam, frequently has been affected by local floods and inundation from heavy rainfall. Conventional flood mitigation measures such as building flood gates and upgrading sewerage systems have been implemented but problems persist. The objective of this research is to assess another approach for flood control measures, namely Sustainable Urban Drainage Systems (SUDS), with application to the Nhieu Loc - Thi Nghe Basin, located in the central part of Ho Chi Minh City. Methodology: A combination of the Stormwater Management Model (PCSWMM) and interviews with 140 households was used to assess the efficacy and acceptability of four of the most popular SUDS: Rainwater harvesting, green roofs, urban green space and pervious pavement. Thirteen SUDS and urban build-out scenarios were simulated under 6 design storm conditions. Results: PCSWMM results showed that inundation from intense rainfall could be reduced with proper land-use control, specifically by maintaining imperviousness at 65% or less of the surface area. With respect to SUDS performance, green roofs were best at reducing peak runoff (22% reduction), followed by pervious pavement, urban green space, and rainwater harvesting systems. Regarding environmental improvements, as represented by reduction in total suspended solids load, urban green space was best with 20% of the solids load removed compared to the base case scenario, followed by green roofs, pervious pavement, and rainwater harvesting. The household interviews revealed the majority of people preferred pervious pavement to the other SUDS options and the least preferred option was green roof technology. Conclusion: Considering the combination of water quantity and water quality controls, it seems that green roof technology was the best performer for this area of Ho Chi Minh City, followed by urban green space, pervious pavement and rainwater harvesting. However, green roof technology also was the least favored option for the public and stakeholder acceptance will impact SUDS implementation.
Authors and Affiliations
Ho Huu Loc, M. S. Babel, K. N. Irvine, Pham Minh Duyen
Feasibility Study of Water Saving Measures in Higher Education Buildings: A Case Study of the University of Aveiro
Aims: Evaluate the water savings potential and financial viability of water saving measures in in higher education buildings Study Design: The study follows an observational approach to characterize the current performa...
Part 1 - Climate Change Adaptation: Water Management and the Built Environment
A changing and more variable climate coupled with urbanization, population growth and shifting living standards has led towards increased frequency of extreme events (droughts and floods). Using water wisely in the built...
Microalgae Assisted Bioremediation of Landfill Leachate Using a Biocoil Reactor: Evaluation of Operational Conditions Using Taguchi Experimental Design
The utilization of organic matter present in low-value effluents, such as landfill leachate, for cultivation of microorganisms exhibit an opportunity for low-cost cell growth while reducing the pollutants in the residue....
Participation or Exploitation: How Can Concepts of Community and Privatization Coalesce around Water Efficiency Approaches?
The need to promote water efficient technologies and initiatives is increasingly a central feature of Integrated Water Resources Management (IWRM). Attendant to this is a growing focus by IWRM practitioners of the role t...
Customer Attitudes to Water Use and Its Conservation
Aims: Understanding how customers engage with and view their water usage is crucial to the design of more effective water demand management policies and programmes. This paper presents the findings of a small-scale resea...