Two Case Stories recently published by IEA Task 37 Energy from Biogas are of interest to EBNet members and the wider anaerobic digestion community.
One is a study of the VEAS wastewater treatment plant in Oslo, which serves a population equivalent of around 800,000. The plant recovers 79% of N and 92% of P inputs, while also producing energy in the form of bio-LNG from upgraded biogas, ammonium sulphate solution as a fertiliser, and VEAS-jord as a soil improver used on agricultural land; and capturing the CO2 from its biogas upgrading process for offshore geological sequestration. While most of the processes are conventional, there are clear signs of progression from a wastewater treatment plant towards a wastewater based biorefinery.
The other study is of Apsley Farms in Hampshire, UK. This is slightly outside EBNet’s core remit, as the plant is mainly designed for renewable energy production from agricultural feedstocks rather than as a waste treatment facility. The report describes features of interest for any AD application, however, including marketing of digestate products and of CO2 recovered from biogas upgrading, as well as some innovative design and process configurations.
Towards carbon neutrality in on-farm biomethane production from break crops
These and other short studies are freely available from Case and Success Stories | Task 37 | Energy from Biogas
