Membrane De-Aeration Water Treatment Facility for Managed Aquifer Recharge

Waternish led the development in Australia of membrane de-aeration for groundwater reinjection
As such, we were contracted to design, construct and commission a 12MLD treatment plant that would deliver an oxygen removal rate of more than 98%.

Client
Santos
Value
$5.6million
Project Completion
August 2014

To dispose of surplus water that was extracted with coal seam gas from the network of collection wells as part of the GLNG project, Santos elected to pursue managed aquifer recharge. Strict environmental controls meant that stringent water quality parameters were put in place.

This meant a significant amount of treatment was required prior to the injection of water back into the aquifer.

Having led the development in Australia of membrane de-aeration for groundwater reinjection, Waternish was contracted to design, construct and commission a 12MLD treatment plant that would deliver an oxygen removal rate of more than 98%.

Designing a plant specifically to the requirements of the Santos process saw Waternish develop a customised, skid-mounted solution spread across four modules that included an inlet pump station and a booster pump station post-treatment, cartridge filtration, nitrogen generation, liquid ring vacuum pump station, membrane array and chemical clean in place system.

Fabrication and assembly took place at the Waternish facility in Adelaide and utilised internal trade and management resources. The unit was shipped to the site and assembled under Waternish’s direction and then commissioned by members of our project team.