... biogas) storage domes 1.good for the melt of snow 2.suitable for the raining area. 3 ... biogas storage tank is located at the top of fermentation cylinder. This can be used as a ... conical, which is good for the melting of snow. The matched devices such as stable pressure ... Such as, over-pressure protection, the display of capacity, pressure and temperature, dewatering system, observation window, etc.The ...