To cater for future development and population growth in the Harbour Area Treatment Scheme catchment under the ultimate development scenario, we will expand the SCISTW with a design daily treatment capacity of 2.44 million m3.
The scope of the upgrading works comprises:
(a) provision of a new main pumping station at SCISTW;
(b) expansion and modification of the chemically-enhanced primary treatment facilities, and provision of permanent disinfection facilities, at SCISTW;
(c) contruction of an approximately 880 metres long effluent tunnel on Stonecutters Island;
(d) provision of covers and deodourization facilities to the existing sedimentation tanks at SCISTW;
(e) expansion of facilities at SCISTW for sludge treatment, handling, transportation and disposal; and
(f) upgrading of sludge reception facilities at the existing West New Territories (WENT) landfill piers.