Name and Location
Kila Kila sewage treatment plant, Port Moresby, Papua New Guinea.

Client
Independent Public Business Corporation.

Project Description
The project forms part of the wider Port Moresby sewerage system upgrade project (Pomssup).

Rapid urbanisation in Port Moresby, owing to an increase in the population and associated socioeconomic activities, has led to increased volumes of sewage effluents. As a result, the existing sewerage system needs to be upgraded to reduce and prevent untreated sewage from being discharged into the sea. This will protect the local marine ecosystem and the livelihoods and sources of income of the local people, while reducing health risks.

Stage 1 of the Pomssup scheme will result in the construction of the sewage treatment plant in Kila Kila, capable of treating flows of 18 400 m³/d. Infrastructure consisting of 13 pumping stations, a 13 km trunk sewer and 15 km branch sewer will also be built or rehabilitated as part of the project.

Stage 2 of the project will expand the treatment plant capacity to 25 700 m³/d, as well as reduce solids produced at the site and generate biogas for power generation.

Value
Phase 1 is estimated at A$80-million.

Phase 2 will cost an estimated A$50-million.

Duration
Construction of the sewage treatment plant upgrade is expected to start in 2018.

Latest Developments
Mott MacDonald has begun preparing the detailed design of the solids management component of the new sewage treatment plant.

For Stage 2 of the project, Mott MacDonald has developed technical solutions to expand the treatment plant’s capacity.

The consultancy will design the process, mechanical, hydraulic, civil and building services for the primary sedimentation tanks, dissolved air flotation prethickening units, gravity belt thickeners, anaerobic digesters and gas engines, including all associated equipment and pumps.

Key Contracts and Suppliers
Mott MacDonald (detailed design).

On Budget and on Time?
Not stated.

Contact Details for Project Information
Mott MacDonald, Tom Smith, tel +44 20 8774 2205 or email tom.smith@mottmac.com.