The given system performs biogas purification (upgrading) to bio-methane condition. Bio-methane is similar to natural gas with a methane concentration 95-99%. After the purification system the gas can be used as vehicle fuel or can be fed to the national grid gas supply network of middle and or low pressure or can be used for any technological need for complete replacement of natural gas.

The system that is offered is water regenerative upgrading system. Its working principle is based on different level of gases solubility in water. When biogas flows through cold water carbon dioxide is diluted in it and is released when water is heated. The advantage of a water system when compared to PSA or carbon systems is low net cost of product gas. Thanks to the usage of water as the main component of that system it does not require any kind of reagents or any other associated costs for its operation.

Photo. System of biogas cleaning to methane