Dual membrane gas tank for biogas plant 1.less maintenace 2.easy installation 3.volume ... semi-spherical dual membrane gas tank for biogas plant It adopts the special biogas membrane material with the favorable ageing resistance, ... our auto-systemUse waste to produce biogas for generatingSpecifationVolume(m3): 50,80,100,150,200,250,300,400,500, ... and easy control. Dual membrane gas tank for biogas plant