The contract is worth about $3,142 million. Upon the expected completion of relevant construction works in late 2020, the contractor will undertake the operation, repair and maintenance of the STW for a contractual operation period of 15 years.

Speaking at the contract signing ceremony, the Director of Drainage Services, Mr Edwin Tong, said, “The project comprises the design and construction of sewage treatment facilities with a daily treatment capacity of 200 000 cubic metres to cater for the projected additional sewage flow due to development needs in the Northwest New Territories after 2020. The works will also upgrade the treatment level of the STW to the chemically enhanced primary treatment level with ultraviolet disinfection facilities for reducing pollution loads to the northwestern waters.”

The new STW will adopt innovative sedimentation technology, which is more efficient in sedimentation than conventional clarifiers and requires less space, saving almost 40 per cent of the land that would be otherwise needed.

The project employs the BIM (Building Information Modelling) technology to visualise the plant design and other information with 3D images, facilitating not only the co-ordination and planning of different works and resource utilisation during the construction stage, but also the subsequent operation and management of the STW.

For details of the contract, please visit the DSD website at /EN/Our_Projects/Contracts_Consultancies_Awarded/ContractsProject2016-5.html


The Director of Drainage Services, Mr Edwin Tong (fourth left), and the Assistant Director of Drainage Services (Sewage Services), Mr Henry Chau (third left), sign the "Design, Build and Operate" contract for the Upgrading of San Wai Sewage Treatment Works - Phase 1 with the representatives of ATAL-Degremont-China Harbour Joint Venture, Mr Michael Cheung (first left), Mr Luo Sixiong (second left), Mr Raymond Chan (fourth right), Mr Nelson Hong (third right), Mr Francois Fevrier (second right) and Mr Germinal Bertrand (first right), at the Drainage Services Department Headquarters in Wan Chai today (May 27)