For the storage of biogas prefab steel tanks or concrete tanks are used, and covered by the biogas double membrane cover.

The biogas double membrane cover exist from a outside and inside membrane. The inside membrane is directly in contact with the biogas, and the outside membrane protects the inside membrane against wind and snow.

The round shape gives a high flexible gas volume.

Dubble membrane roof

For the storage of biogas prefab steel tanks or concrete tanks are used, and covered by the biogas double membrane cover.

The biogas double membrane cover exist from a outside and inside membrane. The inside membrane is directly in contact with the biogas, and the outside membrane protects the inside membrane against wind and snow.

The round shape gives a high flexible gas volume.

QUALITY

The biogas outside membrane is made from high quality PVC foil and the inside membrane is made from biogas resistant PVC foil. All stainless steel materials who are in contact with the gas are made from AISI 316. The centre column is Azobe wood.

The ATEX ventilator who keeps the outside membrane in a round shape is AISI 304 and has a volume of 900M³/hr.

The safety valve with Pmin.-2mbar and Pmax.+5mbar insures the pressure under the inside membrane.

INSTALLATION

A centre column with top disk will be placed in the middle of the tank with tensioned bands to the tank wall.

A PE-net will be placed on the tensioned bands who will take care of capturing sulfur components. Both membrane will be placed over the net on the edge of the tank with a stainless steel strip. The ventilator will be placed and the pressure safety valve.

The biogas double membrane roof than will be tested. Than the roof is ready for being used