As part of our commitment to minimise the environmental impact of our operations across the UK, US and Hong Kong we’ve joined the United Nations Race To Zero campaign.
Striving towards net zero wastewater treatment in California
As well as treating 10 million gallons of wastewater each day, the Sterling Natural Resource Centre in California, which was constructed by Balfour Beatty, uses co-digestion technology to transform 130,000 gallons of organic waste per day into 3MW of renewable electricity - enough to power 1,950 homes. As a result, the Sterling Natural Resource Centre is offsetting carbon emissions as it strives to achieve net zero by producing enough energy to run the plant.
The water reclamation facility produces recycled water for indirect potable reuse via groundwater augmentation. As wastewater enters the facility, it is screened to remove inorganic waste. After going through an ultraviolet disinfection process to kill any remaining microorganisms, the recycled water is pumped through a pipeline and spends up to 12 months in a groundwater basin before being pumped and treated for customer use.
Alongside reducing its carbon emissions, the Sterling Natural Resource Centre supports its local community through programmes to educate local young people and by providing hands-on training opportunities.
Working closely with our supply chain partners and customer, our project team developed a cost-effective solution to reuse materials on-site.
Balfour Beatty has set out a roadmap to delivering a zero carbon construction site which we are trialling on a live site - the Royal Botanic Garden Edinburgh - Biomes Initiative.