Sustainable Development

Organic Resource Recovery Centre, Phase II

The Environmental Protection Department of the Hong Kong SAR has tendered for this project using the Design, Building and Operate ("DBO") model. The project was awarded to CSHK jointly with Jardine Engineering Corporation and AJA Joint Venture which was formed by UK Agrivert Ltd. The operating duration is 15 years and is estimated to start in 2023.

Hong Kong disposes around 1,000 tonnes of organic waste that comes from the catering industry, and food manufacturing and processing industry each day. This not only takes up precious landfill space, but also produces landfill gases and leachate, imposing long term burden for the environment. The Organic Resources Recovery Centre, Phase II (“O Park 2”) situates at the Sha Ling Livestock Waste Control Centre in North District, covering 2.5 hectares. The project plans to adopt biological treatment technology of anaerobic decomposition compost machine, converting food waste and organic waste into biogas used for power generation or gas, and the digestate can become farming compost. After the completion of the project, it is estimated that the facility is capable of receiving and processing approximately 300 tonnes source-separated organic waste each day, assisting in the easing of food waste problems in Sheung Shui and the North District.

Taking advantage of this opportunity in constructing the recycling facilities in Hong Kong, we utilise high technology and innovative design in several ways to innovatively mold environmental engineering of the new era.

We have introduced advanced treatment process from other countries, to innovatively achieve combined processes of anaerobic digestion and granulation in Hong Kong, freeing up compost space and individual pasteurisation facilities. The granulator also provides stable soil modifier. This technology helped us raise the bidding expectations from the Environmental Protection Department, doubling the original processing rate of 300 tonnes food waste to the level of 600 tonnes food waste per day, on only 2.5 hectares of land. This project is currently one of the most compact food waste treatment plants, setting an example for effective land use.

We have adopted the BIM technology on the construction aspect, such as using 3D model guidance to complete clash check, 4D model guidance to smoothen construction processes, and 6D model guidance for operation, in order to clarify all equipment information. During the process, intensity level of model design reached 300, 400 and 500 respectively. The high level of detail is rare in Hong Kong construction work and serves as a practical example for CSHK to lead the industry towards high efficiency management and development.

Construction sites can impact the environment in multiple ways and it has always been a problem that contractors must pay attention to. In this project, we reduce negative impacts produced by construction sites to a minimum with the help of different technologies and have yielded significant results.

Odour management

The project strictly controls and handles odour. Factories adopt full negative pressure design and systematic and point source ventilation devices, to keep pressure inside the plant under atmospheric pressure and prevent odour leakage.

Anti-corrosion design

We adopted fibre / iron modified cement, inlaid high-density protective layer and other advanced materials and technologies for anti-corrosion protection to ensure procedures of processing food waste achieve the effects of acid resistance, high temperature, anti-aging and anti-wear, and further extends the machine’s longevity and achieve sustainability.

Fire safety

A firewall isolation zone is set up in the factory to separate it from the surrounding vegetation. The factory is divided into individual fire control zones, with sprinklers installed on anaerobic digestion that produce biogas, which can effectively guarantee fire safety in the factory.

Real time monitoring

Instant automatic monitoring system for noise and dust can monitor construction site dust and noise situation in real time, increasing management efficiency and reducing impacts to the surrounding environment.

Garbage sorting

Construction sites are equipped with smart garbage sorting machines to reduce construction site waste.

Recycling of natural resources

The plant achieved water and electric self-sufficient. Organic waste will produce biogas via bio-metabolism, for power generation through the combined heat and power ("CHP") generator. This not only covers the factory’s own consumption, but the surplus power also satisfies daily electricity consumption for 40,000 households when export to grid. Wastewater generated in the factory is processed through ANAMMOX, MBR and other advanced technologies. The effluent reaches the standard for non-contact water, which is used for diluting chemical reagent during treatment process.

When implementing sustainability approaches, CSHK always prioritises construction site safety. Providing a constructive environment for workers can further enhance construction efficiency, and optimise construction safety and environmental management.

Unmanned self-service shop

Set up electronic self-service shops for workers to purchase essential water and food in remotely located construction sites.

Recharging container for handheld electric tools

Increase charging standards and safety of handheld electric tools and reduce the risk of fire hazard occurrence.

Lightning alarm station

Construction sites located in mid-levels are comparatively spacious. Conducting effective early warning against thunderstorms can further ensure construction site safety, and assist construction site management.

Tower crane lifting area alarm system

High technology alarm system design can increase safety of tower crane lifting area.


Further automation of material transportation can reduce the risk of manpower injury while carrying heavy goods.

We have applied state-of-the-art technologies in many aspects of design and construction to implement a green and environmentally friendly construction method. This project sets new standards in high technology environmental management for the construction industry and has become CSHK’s iconic environmental protection municipal engineering.