[Executive Summary] [Traditional Chinese Version] [Simplified Chinese Version] [Graphical Version] [Verification Statement] [Feedback Form] [Meeting the Targets] [Key Statistics and Data] [GRI Content Index] [Sitemap]
Home | Director’s Statement | About this Report | River Revitalisation for the Good of Water | Highlights of the Year | Governance Approach | Our Core Responsibilities | Environmental Management | Caring for Our Staff | Media Engagement Activities | Stakeholder Engagement Activities | Verification Statement | Meeting the Targets | Key Statistics and Data | Feedback Form |
[Completion of Regulation of Shenzhen River Stage 4] [DSD Research & Development Forum 2017] [Interactive Exhibition “After the Deluge” at the Tai Hung Tung Stormwater Storage Tank] [Successful Completion of the First Stage of Maintenance Works of Penstocks at Stonecutters Island Sewage Treatment Works (SCISTW) Main Pumping Station] [Awards and Honours]
The DSD Research & Development Forum 2017 was successfully held on 14 November at the Hong Kong Science Museum. More than 500 local academics, professionals and industry representatives participated and exchanged ideas. Industry leaders, professors and experts were invited to deliver thematic speeches on "Smart, Green and Resilient Wastewater Management" and "Smart, Green and Resilient Stormwater Management", sharing their experience in the application of smart technologies for sewage treatment and stormwater drainage as well as the development of green innovation, so as to encourage sectorial collaboration and technological innovation development.
[section4_2_large.jpg]
Mr. Edwin TONG Ka-hung, Director of Drainage Services, delivering a welcome speech
[section4_3_large.jpg]
Group photo of Mr. Donald TONG Chi-keung, Permanent Secretary for the Environment (sixth left), Mr. Edwin TONG Ka-hung, Director of Drainage Services (fifth left), Mr. MAK Ka-wai, Deputy Director of Drainage Services (fourth left), and speakers of the morning session
[section4_4_large.jpg]
A group photo of Mr. HON Chi-keung, Permanent Secretary for Development (Works) (sixth right), Mr. Vincent MAK Shing-cheung, Deputy Secretary for Development (Works) (sixth left), Mr. Edwin TONG Ka-hung, Director of Drainage Services (seventh left), Mr. MAK Ka-wai, Deputy Director of Drainage Services (fifth left), and speakers of the afternoon session
Attempting to conserve river ecosystems, DSD has been actively promoting the concept of revitalizing water bodies. In recent years, channel greening and biodiversity features have been introduced in our drainage improvement projects for effective drainage, beautification and biodiversity enhancement. During the year, we commenced on-site trials to revitalise drainage channels and boost their ecological value through rehabilitation of habitats for water-related organisms such as fireflies. The study not only provided a specific and viable solution for nullah and river revitalisation, but also helped evaluate the effect of improved water quality and river habitat restoration on biodiversity enhancement.
[section4_5_large.jpg]
Boulders re-arranged during the restoration of Kwan Tei River to create more pores and crevices as wildlife habitat
[section4_6_large.jpg]
Fireflies flying in the restored habitat
[section4_7_large.jpg]
Ma Wat River before river restoration site trial
[section4_8_large.jpg]
Ma Wat River after river restoration site trial
To better understand the real-time situation of our drains and sewers and ensure the drainage system is in good operating condition at all times, we collaborated with academics and industrial partners on the Smart Sewerage Monitoring System Pilot Scheme. Various sensors were installed in manholes to collect data for analysis that would optimise our daily operation and maintenance works.
[section4_9_large.jpg]
Data loggers and ultrasonic sensors in manholes can monitor real-time water level movements
To address the issue of odour and gases generated in sewers and drains, we conducted a study on controlling odour from drainage and sewage systems. The effectiveness of hydrogel for inhibiting common odour (Hydrogen Sulfide (H2S)) was evaluated. It is found that hydrogel can inhibit the growth of anaerobic bacteria and reduce the generation of H2S in drainage systems, which can in turn control the odour effectively.
The study was carried out in several drainage systems operated by DSD, involving regular testing of air and water samples, and monitoring changes in the bacteria and gas contents. Data on hydrogel controlling odour in drainage systems were obtained during the first stage of the study. To learn more about the effectiveness of hydrogel and its best application, DSD is commencing stage two of the study, aiming to identify the effectiveness of hydrogel in controlling other odours, as well as the feasibility of full application of hydrogel to suppress odour in drainage systems.
The technology of “Food Waste/Sewage Sludge Anaerobic Co-digestion” can further reduce the volume of solids and increase the production of renewable energy - biogas. As a result, the Drainage Services Department has conducted a series of laboratory-scale studies on the operating conditions for this technology. At the same time, the engineering works of “Food Waste/Sewage Sludge Anaerobic Co-digestion Trial Scheme” mentioned in the Policy Address of 2016 are at the construction stage and will commence operation in 2019.
[section4_10_large.jpg]
In addition to further reducing the volume of solids, the technology of "Food Waste/Sewage Sludge Anaerobic Co-digestion" will also increase biogas production
[Executive Summary] [Traditional Chinese Version] [Simplified Chinese Version] [Graphical Version] [Verification Statement] [Feedback Form] [Meeting the Targets] [Key Statistics and Data] [GRI Content Index] [Sitemap]
Home | Director’s Statement | About this Report | River Revitalisation for the Good of Water | Highlights of the Year | Governance Approach | Our Core Responsibilities | Environmental Management | Caring for Our Staff | Media Engagement Activities | Stakeholder Engagement Activities | Verification Statement | Meeting the Targets | Key Statistics and Data | Feedback Form |
(c) Copyright 2018 Best viewed by MS IE 10.0 or above with resolution 1024 x 768.