Biogas from manure and slaughter waste
Published on 30 January 2018
Sweden
Mellersta Norrland
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About this good practice
Alvesta Biogas owns and operates the Biogas production facility. It is owned by 11 farmers, Växjö diocese and Entreprenörinvest Sverige AB (an investment company) that also takes care of the administration.
The 11 farms are in a radius of 15 km from the biogas facility. They mainly hold cattle for meat production, but also milking cows, pigs and lamb. The farmers deliver manure and get the same amount excellent fertiliser in return after digestion. This fertiliser has better quality (more available N) and smells less then manure.
Beside manure, waste from slaughterhouse is used as feedstock. This has led to some problems with odour that are solved with a new filter.
The gas is upgraded to natural gas quality in a scrubber and sold on site to private users and to public transport in the nearby city of Växjö. Decisions made on long term sight were very important. The company has a ten year contract with the buyer of the gas, E.ON, and as long with the farmers. A contract with Region Kronoberg on biogas for the public transport buses was very important.
The 11 farms are in a radius of 15 km from the biogas facility. They mainly hold cattle for meat production, but also milking cows, pigs and lamb. The farmers deliver manure and get the same amount excellent fertiliser in return after digestion. This fertiliser has better quality (more available N) and smells less then manure.
Beside manure, waste from slaughterhouse is used as feedstock. This has led to some problems with odour that are solved with a new filter.
The gas is upgraded to natural gas quality in a scrubber and sold on site to private users and to public transport in the nearby city of Växjö. Decisions made on long term sight were very important. The company has a ten year contract with the buyer of the gas, E.ON, and as long with the farmers. A contract with Region Kronoberg on biogas for the public transport buses was very important.
Resources needed
The facility costed about 6 M€. Alvesta Biogas received investment support of 1,1 M€ from the County Administrative Board in Kronoberg. Contract with public transport company was important. The municipality of Alvesta bought the land initially and sold it to Alvesta Biogas 3,5 M SEK (350 000 E).
Evidence of success
The plant has been profitable from the first day.
Fossil fuel equivalent to 2650 ton CO2 are replaced.
GHG from manure are reduced equivalent to 1880 ton CO2.
After the digestion the manure are of a better quality leading to a reduced need for nitrogen fertilizer. This gives an additional effect corresponding 83 ton CO2. Total reduction sums up to: 4613 ton CO2 -equivalents.
The residues becomes a natural fertiliser of very good quality.
Fossil fuel equivalent to 2650 ton CO2 are replaced.
GHG from manure are reduced equivalent to 1880 ton CO2.
After the digestion the manure are of a better quality leading to a reduced need for nitrogen fertilizer. This gives an additional effect corresponding 83 ton CO2. Total reduction sums up to: 4613 ton CO2 -equivalents.
The residues becomes a natural fertiliser of very good quality.
Potential for learning or transfer
All regions with animal farms and a public transport system can use the concept.
Good practice owner
You can contact the good practice owner below for more detailed information.
Organisation
Alvesta Biogas AB
Sweden
Småland med öarna
Contact
Development Manager