Delta Electricity recycling wastewater and minewaters for cooling purposes
Water-saving initiatives have been implemented in both the Central Coast and Western Regions to ease pressure on water levels in the catchment . These involve treating wastewater and mine water using reverse osmosis plants to lessen reliance on rivers and town water supplies. Delta’s Vales Point Water Reclamation Plant is expected to save up to 230 million litres of drinking water a year by providing recycled water for its cooling water system. The company has installed a reverse osmosis water treatment plant at Wallerawang to address potential water supply and quality issues in the Western Region, which will complement a similar system already installed at Mount Piper.
Other water management measures include:
- treatment of reverse osmosis waste to remove salt and to enable reuse of the treated water;
- use of water from coal mines to reduce demands on natural catchment water sources and reduce discharge to rivers;
· conversion from wet to dry ash extraction and placement systems;
- monitoring and modelling of water use.