Dual membrane biogas storage equipment 1.less maintenace 2.easy ... 10000m3 4.low cost with aotu-system The semi-spherical dual membrane biogas storage equipment It adopts the special biogas membrane ... with our auto-systemUse waste to produce biogas for generatingSpecifationVolume(m3): 50,80,100,150,200,250,300,400,500,600 ... ,700,800,900,1000,1200,2000,2500,3000 Dual membrane biogas storage equipment