Installation of Water Tanks and Pipe Line at Evaporation Ponds

The Callide Power Station facility is located approximately 18 km north-east of Biloela in Banana Shire, Central Queensland. The site consists of three power stations, Callide A, Callide B and Callide C (also known as CPP) and a number of ash storage dams.

CS Energy’s Callide coal fired power stations B and C produce a waste effluent that is discharged into waste storage sites via a lean and dense phase ash pumping system. The runoff water from the ash slurry contains high levels of dissolved solids that drain into the main ash dam on site, Ash Dam B (ADB). The storage capacity of ADB continues to decrease with the production and storage of ash. Dam storage levels need to be controlled, as the Callide power station site is deemed a nominal zero discharge site under the development approval and no water from the dam is allowed to be discharged without the required approvals.

Currently, the site passes the ash water through a series of evaporation ponds to assist in reducing the water levels in ADB. This tender looks at an augmentation of the existing evaporation pond management system through the use of storage tanks and a distribution pipeline.