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  • HKU researchers call for citywide environmentally-friendly rainwater drainage

    HKU researchers call for citywide environmentally-friendly rainwater drainage

    HKU Civil Engineering Assistant Professor Dr May Chui Ting-fong has conducted a feasibility study on the application of sustainable stormwater drainage systems (SuDS) in Hong Kong, funded by the Central Policy Unit's Public Policy Research Funding Scheme. SuDS features include bioretention systems, green roofs and porous pavements. These features, when built over a wide area, can retain and slowly release water, reducing peak flows into the drainage system. The findings suggest that using 5 to 10% of space installing the SuDS features could provide more effective stormwater control.  Dr Chui said Hong Kong has been falling behind developed nations in adopting SuDS features and urges the government to adopt a drainage system that addresses the city's environmental needs, such as green rooftops that can absorb water as well as porous pavements.

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