Ultrafiltration

Exxon Mobil’s PNG LNG Project required a Potable Water Treatment Plant (PWTP) and a Wastewater Treatment Plant (WWTP) to service the 630 man permanent facilities compound in Port Moresby. Recognising MAK Water’s expertise in design and manufacture of high quality, fully automated, packaged water and sewage treatment plants for Oil and Gas projects, the construction contractor engaged MAK Water to design and construct the plants. Further to the offsite manufacture and supply of the plants, site installation and commissioning assistance, and a service agreement to support the facility operator were also provided.

The Combabula Gas Processing Facility (GPF) and Village is located three hours north-west of Roma, QLD and is part of the Australia Pacific LNG upstream gas processing pipeline. The project included construction offices, a 200 person village (phase 1) and a 350 person village (phase 2), with administration and support buildings. MAK Water was contracted to design, manufacture and commission a customised 550EP potable water treatment plant to treat bore water for compliance with Australian Drinking Water Guidelines (ADWG). The client was looking for a fully automated, low maintenance system with online monitoring, suitable for such a remote location.

The owner of a lithium mine undergoing expansion near Kalgoorlie in Western Australia required assistance with upgrade of the existing water infrastructure to provide a reliable supply of water for the new processing plant. With limited availability of fresh water the focus was to provide a water treatment to re-use existing process water. MAK Water worked closely with the owner to design the best possible solution, which allowed for multiple feed sources of varying quality.  The whole process consisted of four new water treatment plants and upgrade of an existing plant to achieve the required outcome. A UF plant was installed in the first stage of the treatment process to receive a blend of ground water, surface water and recycled process water. The UF plant supplies consistent quality filtrate for use as RO feed water, as well as for dust suppression and backwash. MAK Water was also awarded a long-term contract to operate and maintain all of the water treatment plants onsite.

As part of a major upgrade to the Christies Beach WWTP an in-channel Ultraviolet (UV) disinfection system was installed to disinfect the secondary treated effluent from the C-Plant submerged membrane bioreactors. Treated water exiting the UV disinfection plant is discharged to an off-site reuse scheme or discharged to a marine environment and reticulated for onsite reuse. The C3500™D UV system supplied by Calgon Carbon UV Technologies, was selected for the project.