Scope of HATS Stage 2A
The scope of the HATS Stage 2A includes the following major components:
- upgrading of eight existing Preliminary Treatment Works (PTWs) at North Point, Wan Chai East, Central, Sandy Bay, Cyberport, Aberdeen, Wah Fu and Ap Lei Chau;
- upgrading of the existing chemically enhanced primary treatment capacity of Stonecutters lsland Sewage Treatment Works (SCISTW) from the present design level of 1.7 million cubic metres per day to about 2.45 million cubic metres per day.
- construction of around 21km long deep sewage tunnel to collect and transfer sewage from the eight PTWsto SCISTW for treatment.