Project Background

Phase 1 Works

The project TPSTW Stage 5 Phase 1 aims to upgrade the existing TPSTW to provide additional treatment capacity to meet the demands of both the existing and future developments, and to meet the revised discharge license requirements which will come into effect once the Project has been completed. The scope of the Phase 1 Works includes the expansion of and modifications to the existing TPSTW to increase the total plant design capacity from the present daily average dry weather flow of 88,000 m3/day to 100,000 m3/day.

Key elements of the Project include:

• expansion of and modifications to the existing inlet works and preliminary treatment facilities;
• modifications to four existing bioreactors;
• construction of two final clarifiers and modification of six existing ones;
• additional sludge treatment facilities;
• construction of a filtrate treatment plant; and
• ancillary works to the existing treatment facilities.

Parties involved in the Phase 1 Works include :

Phase 2A Works

The project TPSTW Stage 5 Phase 2A forms part of the Phase 2 Works aims to upgrade the existing TPSTW to provide disinfection in TPSTW to meet the revised discharge license requirements which will come into effect once the Project has been completed. The scope of the Phase 2A Works includes the provision of disinfection and ancillary facilities in TPSTW for its future extended plant design capacity of 120,000 m3/day. Key elements of the Phase 2A Works include:

(a)  Provision of ultraviolet (UV) disinfection facilities; and
(b) Ancillary works including power supply systems, control systems, pipeworks, building services installations, fire services installations, lifting     appliances and road works.

Parties involved in the Phase 2A Works include :

Phase 2B Works (Construction Phase)

The project TPSTW Stage 5 Phase 2B forms part of the Phase 2 Works aims to upgrade the existing TPSTW for expansion of and modifications to the existing TPSTW which future total plant design capacity from the present daily average dry weather flow will be increased from 100,000 m3/day to 120,000 m3/day.  

Key elements of the Phase 2B Works include:

(a)   Construction of a primary sedimentation tank, three bioreactors and two final clarifiers;

(b)   Re-construction of four existing final clarifiers;

(c)   Expansion and modification of existing input pumping facilities;

(d)   Expansion of sludge treatment facilities; and

(e)   Ancillary works.

Parties involved in the Phase 2B Works include:

Phase 2B Works ( Operation Phase)

Parties involved in the Phase 2B Works include: