Biogas Plants
Some of the unfavourable effects on the environment caused by the big production of livestock manure can be improved by handling the slurry in a biogas plant and/or in a slurry separator.
In a biogas plant methane gas is produced by anarobic bacteria digesting in digestion tanks. Electricity and heat are produced by the burning of the produced methane gas in a combined power and heat plant. A typical biogas plant is mainly driven by slurry with different vegetable and animal waste products from the food industry added.
There are several advantages connected with the production of biogas:
- Electricity and heating production and sales
- Organic waste is treated and converted in a CO2 neutral process
- The nutrients in degassed slurry are better utilized by the crops
- The degassed slurry causes less odour during storing and application on fields
If the amount of slurry has to be reduced to facilitate transportation or to increase the density of the nutrients
, one can combine the biogas plant with a slurry separator. Degassed slurry is much easier to separate than raw manure, as a substantial part of the dry matter is converted during the process.Picture copyright: Landbrugsraadet
