Challenge

The project was a real human, technical and environmental challenge. Numerous constraints had to be overcome, including limited water supply, space and zero discharge requirements. Climate is extreme, with 300 km/h wind, -40°C and everlasting snow, and access is particularly limited. In addition, the refuge has a seasonal traffic, being open from June to September.

Solution

Evac delivered 8 vacuum toilets, 3 buffer and sludge storage tanks, an Evac OnlineFlex vacuum collection unit and an Evac MBR wastewater treatment plant. The clean effluent from MBR wastewater treatment plant is recycled for flushing the vacuum toilets.

Results

Evac solution offered an additional source of water operating independently of the potable water produced by snow melting. Evac also contributed to comply with very strict environmental objectives with more than 50% water saving and discharge of high-quality water.