Finnish Environment Institute | Suomen ympäristökeskus | Finlands miljöcentral

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Biogas producers have had challenges to find operational and cost-efficient processing technologies. Solids and liquids can be separated from digestate. Phosphorous rich solids (dry content 20-30 %) can be cost-efficiently transported further away from a biogas plant. Nitrogen rich liquids can be concentrated, but many of the tested technologies have not been successful with heterogenic liquid. This is the reason why digestate processing is not very common. Digestate processing is currently under an active development. Viable demonstrations are much needed.

It is essential to understand, what kind of recycled fertilizers should be produces. Adjustments on processing technologies are needed. Operational technologies do not guarantee market penetration as fertilizers need to meet the needs of end users as well. Information on the requirements of end-users is needed, as well as information on preconditions connected to spreading technologies. It is also essential to know the requirements of cultivated plants.

Published 2018-07-06 at 10:18, updated 2018-07-06 at 10:21
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