QGC is a leading natural gas explorer and producer focused on establishing the world's first project to convert gas from coal seams into liquefied natural gas.
QGC employs thousands of staff and contractors and provides a boost to Queensland's economy as it develops natural gas, a cleaner hydrocarbon, for domestic and international customers.
QGC is wholly owned by BG Group, a leading player in the global energy market.
The Client's Needs
Coal seam gas produced water contains various dissolved and suspended contaminants which needed to be removed before being suitable for use at a power station.
QGC needed then to treat produced water from their nearby coal seam gas facility for various uses at the 150MW Condamine power station including cooling tower make-up, process water and demineralised boiler feed water.
Capacity: 6 MLD/day
Veolia Water Technologies Australia was awarded the contract for the design, build, installation supervision and commissioning of the Condamine PS produced water treatment plant.
To treat the water produced from gas wells, the demineralised seawater plant combines the following innovative technologies:
- Actiflo® clarification
- Microfiltration (MF),
- Two-pass reverse osmosis (RO); and
- Continuous electro-deionisation (CEDI)
Veolia delivered a compact and robust treatment process which met the treated water quality requirements on site. The system consisted on an externally mounted Actiflo® clarification plant along with internally installed MF, RO and CEDI plants.
The plant enabled QGC to utilise a waste product from their coal seam gas extraction process as a resource for Condamine power station. Not only did this remove the dependence on external water supplies, it also delivered environmental, sustainability and financial benefits to QGC.
The Condamine PS produced water treatment plant was commissioned in July 2009 with no safety incidents, and is currently producing the required water quantity and quality of permeate.