The Moa Point wastewater treatment plant is vital for serving Wellington’s population of over 200,000 residents and discharging treated water into Cook Strait. The ongoing sludge minimisation project is a significant effort to improve the local environment and reduce carbon emissions.
WD News: Cambi has been awarded a contract to integrate two thermal hydrolysis process (THP) systems into the Moa Point wastewater treatment plant in Wellington, New Zealand, as part of the new Sludge Minimisation Facility (SMF).
The project is expected to revolutionise wastewater solid management by significantly reducing the required anaerobic digester volume, increasing green electricity production from biogas, and improving dewatering. As a result, the size and energy requirement of the thermal drying facility will decrease by more than 40%.
Moreover, the implementation of thermal hydrolysis will create safe opportunities for reuse, benefiting soil health or energy production, leading to an 80% reduction in waste sent to landfills. Additionally, the new facility will contribute to a more balanced energy approach and reduce carbon emissions from solids treatment and processing by over 60%.
The awarded contractors, HEB Construction and McConnell Dowell, are set to execute the SMF project, and thermal hydrolysis is expected to be operational by 2026.
Source & image courtesy: CAMBI
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