The existing activated sludge plant at Tubli Water Pollution Control Centre (WPCC) was designed to treat a daily flow rate of 200,000m3/d. However, due to the continuing rapid growth of Bahrain, the flow rate into the works was in excess of 300,000m3/d and this is only expected to increase in the future.
The Ministry of Works requested Bluewater Bio to provide a solution that, in the first instance, alleviated the overloading problems and met the stringent TN standards required of TSE production, all within the confines of existing site boundary.
The HYBACS® upgrade comprises the conversion of 2 of the 10 aeration lanes and 4 of the 12 clarifiers into a HYBACS® plant, by installing 42 SMART™ units upstream of the aeration lanes. The upgraded HYBACS® plant now treats 100,000m3/d meaning that the two aeration lanes, originally designed for 40,000 m3/d, have a 150% uplift in capacity.
|Project Name:||Tubli WPCC (Phase 2)|
|Client:||MoW - Bahrain|
|Capacity:||120 MLD / 420,000 P/E|
|Project Driver:||Overloaded plant and
|Project Scope:||DBO Contract|
|Main Contractor:||Bluewater Bio|
|Main Contractor: Bluewater Bio|
|MoW standard contract
(based on FIDIC)
- Low-cost upgrade – utilising existing assets
- 3-fold increase in capacity
- Power consumption only 47W/PE.day (165 W/m³
- Enhances the environment in Tubli Bay
- Enables 120 MLD for reuse and irrigation
- Highest standards of H&S
(zero lost-time incidents)
Scope of Works
Design, procurement, construction, installation, testing, commissioning, operation and maintenance of: new feed pump station, SMART™ plant, conversion of aeration lanes from surface aerators to FBDA,
new blower building, new sludge pump station, conversion of existing clarifiers into HYBACS® plant, 2 x new substations, associated SCADA control system, HV power distribution system. Following successful completion Bluewater Bio were appointed to operate and maintain the HYBACS plant at Tubli.
24 months, completed October 2021
Client organisation: Bahrain Ministry of Works
Contact person: Musab Al-Sayed (Project Manager)
Contact Info: +973 (0)3994 3882 | firstname.lastname@example.org
Performance Test Results
|Total nitrogen (mg/l)||10||5.9|
|Power usage (kWh/week)||280,000||140,000|