The main objective of the project is the production of biomethane from biogas to the Perknov WWTP and its injection into the gas distribution system. For the production of biomethane the method of membrane separation will be used. Biogas resulting from the treatment of sludge will be converted into biomethane, gas with the quality of natural gas, and by means of an upstream pipeline will be pushed into the gas distribution system. Biomethane can be used in all plants that consume natural gas, such as heating or transport.