5. Treatment of the biogas and injection into the natural gas grid or production of electricity from the biogas and injection into the power grid
6. Use of the heat generated by the biogas plant for wood drying, heating of residential and commercial buildings, etc.
7. Transport of organic, low-energy residual materials from the biogas plant as fertilizer for agriculture.
8. Cleaning of bins, containers, and packaging and reintroduction into the collection cycle. Illustration of a biogas plant.