Integrated Waste Management Facilities
- Tackling Imminent Waste Management Problem - Integrated Waste Management Facilities (slides)
- Explanatory Document about the proposed Integrated Waste Management Facilities
- Proper Waste Management - Integrated Waste Management Facilities
(Only the Chinese video is available; or download a transcript of this video. )
- Promotion campaign on Waste Reduction II - Japan Ecotour part 2
(Only the Chinese version is available.)
- Promotion campaign on Waste Reduction II - Japan Ecotour part 1
(Only the Chinese version is available.)
- Integrated Waste Management Facilities (Waste)
Advanced technologies are able to reduce pollutant emissions from incineration effectively. For example in Germany, the amount of waste incinerated in year 2000 doubled that in 1990, but due to the adoption of advanced control technologies, the dioxin emission was only one-thousandth of that in 1990. Overseas experience and studies have also demonstrated that advanced incineration plants that comply with stringent emission standards will not cause adverse health impacts.
The IWMF Phase 1 will adopt state-of-the-art technologies and pollution control measures. Its emissions will comply with the emission standards for waste incineration facilities in Hong Kong and the European Commission for the protection of public health and the environment. The emission standard for nitrogen oxides will be even more stringent than the corresponding European Commission standard.
(Advanced incineration and flue gas treatment technology adopted by IWMF Phase 1 - Process Flow Diagram)
Air quality monitoring stations will be set up at Shek Kwu Chau (SKC), Cheung Chau and South Lantau to provide objective data on local air quality to ensure that the operation of the IWMF Phase 1 will not affect the surrounding environment. An action level will be set at 95% of the emission limits to provide early alarm such that we will take appropriate actions according to a formulated plan which will include ceasing the MSW feeding and preparing for shut down of the incineration system.
Tsang Tsui Ash Lagoons site
Potential Sites for the Development of IWMF
Shek Kwu Chau site
Engineering Investigation and Environmental Impact Assessment Studies
- it has the best proven track record of application in large MSW treatment facilities (i.e. over 3,000 tonnes per day (tpd));
- it is the most robust thermal technology, capable of treating different sizes and qualities of mixed MSW;
- it possesses the least operational complexity; and
- it requires the least capital and operating costs.
Having reviewed different thermal treatment technologies, the EI&EIA Studies proposed that the moving grate incineration be adopted as the core technology for MSW treatment. The advantages of this technology are that :-
For the artificial island near SKC, MSW compacted in tightly sealed containers and delivered by dedicated container vessels would be delivered by marine vessels from the existing refuse transfer stations including Island East Transfer Station, Island West Transfer Station and West Kowloon Transfer Station. For the Tsang Tsui Ash Lagoons site, MSW currently delivered to the berth of WENT Landfill by marine vessels or delivered directly to the WENT Landfill by land transport will be diverted from the WENT Landfill to the adjoining the Tsang Tsui Ash Lagoons site by land transport.
Waste container vessel
IWMF Phase 1 Contract
Key features of the DBO contract:-
- design and construction of reclamation of about 16 hectares to form an artificial island near SKC and related works;
- design and construction of an MSW incineration plant with a maximum treatment capacity of 3,000 tonnes per day;
- design and construction of a mechanical sorting and recycling facility with a maximum treatment capacity of 200 tonnes per day;
- design and construction of associated architectural, building, civil and landscape works;
- design and installation of the electrical and mechanical works for the waste receiving and sorting facilities, waste incineration, heat recovery, power generation, pollution control and ash treatment systems;
- design and construction of mechanical and electrical works for utility services facilities including a desalination plant and a wastewater treatment plant.;
- design and construction of power connection and export system; and
- provision of pollution control and environmental monitoring facilities.
Environmental Education Facilities
An educational route will be designed for visitors to overlook the main components of IWMF Phase 1 and have a close-up learning experience at key areas such as the incineration process, flue gas treatment process, mechanical sorting and recycling facility and control room. Ferry services between the IWMF Phase 1 and Central/Cheung Chau will be offered to visitors.
Environmental Protection and Ecological Enhancement
Through the replacement of fossil fuel in electricity generation and reduction in the volume of MSW for landfill disposal, it is estimated that about 440,000 tonnes of greenhouse gas emission per year can be curtailed.
Finless Porpoise Monitoring
White-bellied Sea Eagle Monitoring
An advanced ground treatment method, i.e. deep cement mixing (DCM) is proposed to reinforce the marine mud in situ to control settlements and movements of the reclamation to within acceptable limits and to ensure that the construction of the artificial island can be completed within a reasonable time frame.
The DCM will also be designed to ensure that the reclamation will be safe and any residual settlements and movements will not affect the operation and service of the IWMF Phase 1. Precast concrete structure will be used for the seawall and breakwater construction to minimize underwater acoustic disturbance to Finless Porpoise and water quality impacts during construction.
To achieve better synergy in the future management and operation of the marine parks, and taking into account the sizable movement ranges and high mobility of Chinese White Dolphin and Finless Porpoise, it is proposed to combine the proposed compensatory marine park and the proposed Soko Islands Marine Park into a larger single marine park of approximately 2,067 hectares, namely the South Lantau Marine Park. The statutory process of the South Lantau Marine Park designation is targeted to be completed by 2022.
In addition, fish fry and fingerlings will be released at the deployed artificial reefs within the proposed South Lantau Marine Park and at the eco-shoreline to be constructed under the IWMF Phase 1 to further enhance the fisheries resources in South Lantau waters.
To evaluate the effectiveness of the artificial reefs deployment and fish restocking as fisheries enhancement measures, a series of monitoring works including fisheries resources monitoring by gill netting and hand lining, artificial reef structural monitoring by side-scan sonar and fish restocking monitoring by hand lining will be conducted.
Restocking of fish fry / fingerlings at artificial reefs
2014 Policy Address
To this end, an Islands District Liaison Group comprising representatives from the Islands District Council, relevant Rural Committees, stakeholders including the fishery sector and relevant government departments, was established in July 2015 with a view to strengthening communication with the local communities for the implementation of major waste treatment facilities (including IWMF Phase 1, Organic Resources Recovery Centre Phase 1 and refuse transfer stations) in the Islands District.
In accordance with our previous IWMF Phase 1 related engagement experience, different local communities will have different interests and concerns. In this connection, 3 working groups namely the South Lantau Working Group, Cheung Chau Working Group, and Shek Kwu Chau Working Group were formed in July 2015 under the umbrella of Islands District Liaison Group to strengthen our communications with the local communities with a view to catering for their different needs and interests.
Islands District Liaison Group