The first tertiary sewage treatment plant in Hong Kong will be built in Ngong Ping, Lantau with the award of a HK$233 million contract by the Drainage Services Department.
Speaking at the press briefing on the project after the contract signing ceremony, the Director of Drainage Services, Mr Raymond Cheung Tat-kwing, said today (August 27) that tertiary-level treatment was given to the sewage collected at Ngong Ping in order to protect this environmentally sensitive area and the water quality of the water gathering ground for Shek Pik Reservoir and other receiving water bodies.
"To make sure that Ngong Ping Sewage Treatment Plant is harmonious with the environment, special attention has been given to its aesthetic design," Mr Cheung said.
"The plant will adopt the technology of Sequencing Batch Reactor, dual media filter and disinfection process to reduce organic pollutants, suspended solids, nutrients and pathogenic organisms from sewage to a very low level," he added.
The contract, which forms part of the Ngong Ping sewerage scheme, was signed today by the Director of Drainage Services with representatives from the contractor, the Kier-Leader-Kenworth Joint Venture. The consulting engineer for the contract is Ove Arup & Partners Hong Kong Limited. The work is due for completion in about two years' time.
Apart from the construction of the treatment plant, the work will also include the construction of a 200-metre-long trunk sewer of about 500mm in diameter for connection to the public toilets and Cable Car Terminal and associated tourist developments in the area.
About 5.7km of twin effluent export pipeline each 200mm in diameter from the plant to Tung Wan at the southern side of Lantau and an effluent reuse supply system will also be built.
Speaking on effluent reuse, Mr Cheung said that the high quality of the treated effluent from Ngong Ping Sewage Treatment Plant provided a good opportunity for conducting a pilot trial on effluent reuse.
"Part of the treated effluent will be reused for flushing public toilets in Ngong Ping and at the Cable Car Terminal," Mr Cheung added.
"The trial will help provide information and useful experience for the Government to further review and assess the technical and operational feasibility for wider use of treated effluent in Hong Kong," he said.
End/Wednesday, August 27, 2003
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