- Description: Winery wastewater treatment upgrade
- Location: Blenheim, Marlborough
- Installed: 2011
- Project type: Design, build, install and commission
Apex Environmental upgraded the existing wastewater treatment plant at Wither Hills (Lion Nathan), while maximising the use of existing equipment, to improve environmental performance and accommodate increases to the processing capacity of the winery. The upgrade included a large balance tank, which allows the withholding of irrigation wastewater during adverse weather and an aeration system that employs dissolved oxygen control to minimise energy consumption.