Specifacation: Our 10000m3 bio gas balloon is made of high-strengthened, high-elastic synthetic engineering membrane and of perfect anti-acid and anti-corrosion ability. The biogas specific membrane had been widely used in foreign energy treatment, sewage treatment and other industries. This has been tested that the service life is at least 15 years. Contents: 1. It can store large amount of biogas. 2. The biogas tank is separated with fermentation cylinder, when goes in trouble, it will not influence the other. 3. We have designed 5 capacity ir detectors along the outer membrane instead of internal traditional ultrasonic detector. For long years of be specific in our biogas tank manufacture, we have many unique design that other company may not have. 1. Ventilation between the inner membrane and outer membrane. If there is few biogas in the air between, so we must ventilate. As we konw biogas are explosive gases, so it would be dangrous to let it be there. 2. Dranage design between the inner membrane and outer membrane. If there is temperature difference, it will form condensation water. Specially, in cold area, water will easily freeze, this will totally do harm to the storage system. So we have dranage sybetween the inner membrane and outer membrane. 3. Special designed inner membrane We have taken advanced tension structure, which makes the inner membrane try to be as less folded as possible. This will greatly increase the lifespan of biogas tank Wooden box / customized for your requirement