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Industrial biogas plant for biowaste and food waste in Ireland/ Huntstown

Biogas plant Huntstown in construction

Biogas plant Huntstown in construction

With the order for a large industrial waste digestion plant (2 x 2,4 MWel) in January 2018, Krieg & Fischer is building its second biogas plant in Ireland. The anaerobic digestion of 90,000 t/a of waste (42,000 t/a biowaste and 50,000 t/a organic supermarket and restaurant waste as well as waste from the food industry) is used to generate electricity and produce thermal process energy. The two different input substrates (MSW = municipal solid waste and SSO = source sorted organics) are treated in two separate lines. This requires a special planning and technical challenge, also because the construction site is very limited. The separated input material flows are by pretreated with a thermal pressure hydrolysis (THP). After sand separation and cooling, the input flows are temporarily stored. Each line is followed by 2 high digesters made of steel, as well as a secondary digester, common external gas storage, gas conditioning and 2 CHPs. In purely mathematical terms - 1,700 m³/h of biogas can will be produced and converted into electricity here in the future. The plant is planned in such a way that also the secondary digesters can be used as the main fermenter. This is important for maintenance work. Due to the high sand content in the input, considerable deposits can be expected in the tanks. A temporary sand discharge without complete tank emptying is part of the scope of planning. Commissioning is planned for the 3rd quarter of 2019.

see reference Huntstown