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Sustainability Report 2017-18
“River Revitalisation for the Good of Water”
This Sustainability Report summarises our achievements in the past year and enables our stakeholders to have a better understanding of our vision and commitment to sustainable development.
Going The Extra Miles
The year 2014-15 marked the 25th anniversary of DSD, we published this monograph to look back on the endeavours and achievements of DSD in the provision of stormwater drainage and sewage treatment services.
Sewerage and Flood Protection
This book traces the major milestones in the history of Hong Kong’s drainage services and outlines our views on sustainable development to meet growing needs in the future.
This book hopes to shed light on these hidden labyrinths that are keeping Hong Kong safe. In relating their story, the DSD wishes to share with readers both the challenges and hard-won successes that shaped these notable projects.
DSD's Iconic projects
Kai Tak River Improvement Works (Wong Tai Sin Section)
Kai Tak River, previously named as Kai Tak Nullah, is one of the major drainage channels in East Kowloon with a total length of about 2.4 kilometre (km) long. Due to urbanisation and extreme weather, drainage capacity of Kai Tak Nullah in the past could not meet the current flood protection standard. Therefore, the Government suggested to carry out drainage improvement works. Through public engagement exercise before commencement of works, design principles for the improvement works have been established: according high priority to increase drainage capacity, minimising river decking and revitalising as a green river.
Upon completion of works, the drainage capacity of Kai Tak River can attain the current design standard, so as to mitigate flooding risk along Choi Hung Road.
Harbour Area Treatment Scheme
Harbour Area Treatment Scheme (HATS) is being implemented in stages to combat water pollution caused by urban development around Victoria Harbour. HATS Stage 1 comprised the construction of Stonecutters Island Sewage Treatment Works (SCISTW) and 23.6km of deep tunnels for treating sewage collected from Kowloon, Kwai Tsing, Tseung Kwan O and north-eastern Hong Kong Island. HATS Stage 2A provides treatment to the sewage from the northern and south-western parts of Hong Kong Island. Stage 1 together with Stage 2A can treat 2.45 million cubic metres of sewage per day. The full commissioning of HATS helps to enable the sustainable development of the harbor area and also allows the public to better enjoy Victoria Harbour with improved water quality.
Happy Valley Underground Stormwater Storage Scheme
Happy Valley in Hong Kong is a low-lying hinterland at the downstream of a hilly terrain. During heavy rainstorms, runoff from the vast uphill catchment posed flood risk to Happy Valley and its adjoining coastal districts. The public lives were seriously affected.
The Happy Valley Underground Stormwater Storage Scheme innovatively enhances the flood protection level of the city, successfully resolves the flooding problems in Happy Valley and Wan Chai districts. The adoption of smart and automatic movable weirs, water harvesting system and green building designs has created a more resilient and adaptable drainage system that blends harmoniously with the environment.
Relocation of Sha Tin Sewage Treatment Works to Caverns
Releasing of about 28 hectare of land after relocating the existing Sha Tin Sewage Treatment Works (STSTW) to caverns brings multifold benefits to the communities of Sha Tin and Ma On Shan Districts as a whole. On one hand, the environment of the existing STSTW site and its surroundings will be greatly improved. Comparing to the existing open-plant arrangement, the odour management of the proposed relocated STSTW in caverns, with caverns as natural barrier, can be efficiently enhanced so as to minimise the odour impact on the surrounding communities. On the other hand, developing the vacated site for residential and other beneficial uses will benefit the community by meeting the public’s needs.
The Project comprises 5 stages of construction works with the total construction period estimated at 13 years. It is anticipated that the first contract on the site preparation and access tunnel construction could commence in early 2019.