Denmark-headed biogas technology providers Xergi A/S has announced that it is to deliver its largest biogas plant to date. The plant will supply Danish dairy major Arla Foods with green energy for the production of milk powder at its Videbæk facility in western Denmark.
According to Xergi, the new plant is to supply Arla Food’s milk powder production with biogas, which is converted to electricity and heat. The NGF Nature Energy Videbæk biogas plant will be built in the village of Trøstrup close to Videbæk and is expected to be up and running in the autumn of 2018.
The main shareholder is the energy company NGF Nature Energy while Arla Foods, Xergi and local farmers’ association Videbæk Biogas have smaller holdings in the plant.
We have been involved in the project development right from the start 5-6 years ago. Therefore, we are very pleased that we are now on target with the project, said Jørgen Ballermann CEO of Xergi.
Largest Xergi plant to date
With five digesters, each with a capacity of 9 500 m3 the biogas plant can handle around 600 000 tonnes of feedstock per annum and produce 16.5 million Nm3 of biogas thus making the project the largest Xergi has ever built since the company began constructing biogas plants more than 30 years ago.
The plant will be built in accordance with our design principles which over the years have ensured stable and high gas production at a number of large biogas plants delivered in countries such as UK, France, USA and Denmark. The plant will be equipped with a number of new technical solutions developed by Xergi. The solutions improve the gas yield from organic residues from the food industry, agriculture and households. The Nature Energy Videbæk plant will therefore – internationally – become an important reference plant in the transition to green energy, said Ballermann.
The biogas plant provides Arla Foods with the opportunity of using green energy, which is partly produced by one of the company’s own by-products. Every year a total of 40 000 tonnes of the residual product Perlac 14 will be digested in the biogas plant.
The remaining 560 000 tonnes of feedstock will primarily come from agriculture in the form of manure and deep litter but a smaller quantity of residual products from other food industries also ends up in the biogas plant. The residual digestate will be used as fertiliser by local farmers.
When manure and deep litter are treated in the biogas plant the nutrients are made easily available for the crops. This means that farmers can utilise the fertilisation value of their manure better and at the same time new nutrients recycled from industry are continuously being supplied to agriculture. In this way agriculture receives greener and more environmentally-friendly fertiliser while Arla Foods receives a green energy supply, Ballermann explained.
About NGF Nature Energy Videbæk
Principal shareholder: NGF Nature Energy
Other shareholders: Arla Foods, farmers’ association Videbæk Biogas and Xergi
Annual production: 16.5 million Nm3 biogas
Feedstock: c 600 000 tonnes manure, deep litter & 40 000 dairy by-products annually
Digester capacity: 3 primary biogas digesters & 2 secondary digesters all with 9 500 m3 capacity each
Pre-treatment: The plant is set up with the FLEXFEED technology developed by Xergi