At the Coolum Sewage Treatment Plant on the Sunshine Coast QLD, Unitywater planted trial wetlands to demonstrate their value in filtering and trapping sediment and recycling nutrients to provide a cost effective environmentally sustainable augmentation solution.
 

The demonstration wetlands were used to polish effluent from the existing treatment process, reducing impacts on the receiving waters. Increasing the standard of treatment provided will result in a healthier Maroochy River for the community. The trial wetlands also provide a habitat for native flora and fauna.

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The result is the $5.5M Coolum STP augmentation increased the capacity of the treatment plant from 6 to 9 million litres a day, and will cater for anticipated growth in the region on the Sunshine Coast QLD, whilst complimenting the adjacent wetlands.

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CCB Envico was commissioned to perform the upgrades to the inlet and pump station works.

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The Coolum STP serves the catchments between North Marcoola and South Peregian and includes the suburbs of Coolum Beach, Mt Coolum, Yaroomba, Coolum Ridges and Peregian Springs.

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Unitywater operates 17 sewage treatment plants throughout the Sunshine Coast, Noosa and Moreton Bay regions.