[Full Report] [Traditional Chinese Version] [Simplified Chinese Version] [Graphical Version] [Sitemap]
Home | Director’s Statement | About this Report | Sponge City: Adapting to Climate Change | Highlights of the Year | Governance Approach | Our Core Responsibilities | Environmental Management | Care for Our Staff | Media Engagement Activities | Stakeholder Engagement Activities
DSD has been incorporating sustainability elements into our facilities at all plants. With the implementation of “Blue-Green Infrastructure”, we actively promote green landscaping, energy conservation and emission reduction. We put environmental management a very high priority in each of our work projects in order to protect the environment and conserve water, etc.
[section7a_large.jpg]
Shatin Sewage Treatment Works
DSD has been striving to implement the concept of revitalising water bodies by incorporating green and eco-conservation elements into channel and river training works. These include planting in river channels and along river banks, engineering natural stream settings, preserving river ecosystems, enhancing wildlife growth and introducing landscape designs, which not only beautify the environment, but also promote rivers and streams biodiversity.
Blue-Green Infrastructure
[section6_1_1.jpg]
Illustration of the completed Tsui Ping River
[section6_1_2.jpg]
Illustration of the revitalised Kai Tak River
[section6_1_3.jpg]
Lam Tsuen River after the Improvement Works
[section6_1_5.jpg]
Happy Valley Underground Stormwater Storage Scheme
[section6_1_6.jpg]
Hung Hom Bay Sewage Pumping Station
Green design is also our priority consideration when constructing new plants. In 2016, the Kowloon Bay Sewage Interception Pumping Station was bestowed the highest Final Platinum Rating under BEAM Plus Assessment for New Buildings1, being DSD’s second infrastructure facility to obtain this award. Furthermore, the Shek Chung Au Sewage Pumping Station became DSD’s fourth infrastructure facility awarded with the Provisional Platinum Rating under BEAM Plus Assessment for New Buildings.
[section6_1_7.jpg]
Kowloon Bay Sewage Interception Pumping Station
[section6_1_8.jpg]
Shek Chung Au Sewage Pumping Station
| 1 | BEAM Plus New Buildings is a comprehensive environmental assessment system for buildings recognised by the Hong Kong Green Building Council. |
|---|
Sewage treatment is an energy intensive process. To save energy and reduce carbon emission arising from sewage treatment, DSD formed the Energy and Emission Management Team in 2007 to formulate and implement various energy saving measures and steer the application of renewable energy.
Carbon audit enables DSD to identify our plants’ major sources of emission and mitigate greenhouse gas emissions by reducing energy consumption, enhancing operation efficiency and using renewable energy, etc.
[s6_chart1.jpg]
Carbon Footprint in 2015 (in tonnes of CO2 equivalent) Stonecutters Island STW 37,012, Shatin STW 19,118, Tai Po STW 8,247, Shek Wu Hui STW 7,927, Stanley STW 2,393, Sai Kung STW 1,221, North West Kowloon PTW 1,058, Kowloon City No.1 SPS 621
| 2 | Figures are rounded up and may not add up exactly to the total. |
|---|
In 2016-17, we continued to optimise the operation of the sewage treatment works and sewage pumping stations, while replacing ageing equipment with more energy efficient types in order to save energy. We saved about 1.54 million kilowatt-hours (kWh) of electricity (equivalent to carbon reduction of about 1,078 tonnes3).
| 3 | Using Hong Kong-wide default values of 0.7kg CO2 equivalent per kWh. |
|---|
Powered by batteries, the operation of electric vehicles (EV) does not involve gasoline combustion or produce emission, which helps improve roadside air quality in Hong Kong. As at March 2017, there are 35 EVs in our fleet. In 2016-17, an additional of more than 10 medium EV chargers were installed in our sewage treatment works and sewer pumping stations in various district across Hong Kong making charging more convenient and readily available.
We have deployed large-scale photovoltaic (PV) systems to supply electricity to our major facilities, including the Shatin STW, Sham Tseng STW, Yuen Long STW, Sai Kung STW, Shek Wu Hui STW, Sandy Bay PTW, Stonecutters Island STW and Siu Ho Wan STW. Estimated total generation capacity is 1,320 kilowatts (kW).
The largest PV system in Hong Kong was installed and commissioned at Siu Ho Wan STW during 2016-17. It is anticipated that the Solar Farm can generate as much as 1.1 million kilowatt - hours of electricity annually.
[section6_2_1.jpg]
We installed a total of five CHP generators (with a combined capacity of 3.6 MW) at the Shatin STW, Tai Po STW and Shek Wu Hui STW. Gas-turbines (with a total capacity of 280kW) were also installed at Shatin STW and Yuen Long STW. The total equivalent electricity generated by biogas in our STWs achieved about 21 million kWh in 2016-17.
To address global challenges arising from climate change, we maintain close connection with other cities and regions. DSD is a member of Connecting Delta Cities, a subsidiary of the international organisation C40 Cities Climate Leadership Group, and represents the HKSAR Government to exchange views and experience on flood prevention with other delta cities. DSD is also a member of the Hong Kong/Guangdong Joint Liaison Group on Combating Climate Change. Representatives of the Guangdong Provincial Government visited DSD in 2016 to exchange proven experience in drainage system planning.
DSD has incorporated concepts of sustainable water resources management into our newly constructed facilities to improve the utilisation rates of water resources. Major design elements include rainwater harvesting systems, underground stormwater storage systems, rain gardens and porous pavements, etc. Between 2012 and 2016, associated projects completed included the Kowloon City No. 1 and No. 2 Sewage Pumping Stations, Lai Chi Kok Drainage Tunnel, and Happy Valley Underground Stormwater Storage Scheme (HVUSSS).
In line with the Government's initiative to use reclaimed water under the Total Water Management Strategy, DSD continues to produce and use reclaimed water within its facilities while improving the operational reliability of its water reclamation facilities. In 2016-17, DSD generated reclaimed water at an average rate of approximately 1,300 cubic metres per day for non-potable purposes.
Septic process of sewage will produce hydrogen sulphide which has a repulsive odour. To reduce the impact of DSD’s facilities on nearby residents, we have undertaken the following three odour control measures:
In addition, we regularly measure the levels of hydrogen sulphide in our plants to monitor the effectiveness of the odour control measures and to timely adjust the plant operations as necessary.
[section6_5_1.jpg]
Fiberglass reinforced plastic covers for primary sedimentation tanks
[section6_5_2_large.jpg]
Biotrickling filters
We make every effort to put the green office concept into practice at DSD headquarters. Green culture is introduced to every aspect of our day-to-day operation. Therefore, we have in place a series of green policies and measures to raise the environmental awareness of our staff.
In 2016-17, we recorded approximately 17% reduction in energy consumption compared with 2010-11, demonstrating DSD’s commitment to energy saving and consumption reduction. We have also been actively promoting “paperless meetings” by using electronic devices such as tablets and laptop computers for presentations and discussions in day-to-day meetings to reduce paper consumption.
[Full Report] [Traditional Chinese Version] [Simplified Chinese Version] [Graphical Version] [Sitemap]
Home | Director’s Statement | About this Report | Sponge City: Adapting to Climate Change | Highlights of the Year | Governance Approach | Our Core Responsibilities | Environmental Management | Care for Our Staff | Media Engagement Activities | Stakeholder Engagement Activities
(c) Copyright 2017 Best viewed by MS IE 8.0 or above with resolution 1024 x 768.