Double membrane roofs
The new double membrane roofs can withstand all weather conditions ensuring optimal biogas production and a secured renewable energy supply to the UK gas grid. Another major advantage, in comparison with single membrane roofs, is the steady curve of these roofs due to the continuous air flow between the two membranes. When the gas pressure in the roofs is less, the roofs keep their curve preventing cracks or damage.
Refurbishment digester tanks
This project was a prime example of collaboration. Adapt Biogas carried out essential work as preparation of the replacement of the old single membrane roofs, which included emptying and degassing of the digesters, and degritting and cleaning of the tanks. HoSt followed with adaptions to the tank to fit the new double membrane roofs. With these new roofs, the digester tanks also received HoSt pressure relieve valves, gas pressure sensors and digestate level sensors, fitted in each tank.