Enhancing the economic efficiency of a Grass-silage-fed AD Plant


Improving the efficiency of an AD plant

Cooperation between DSM Biogas / OMEX Environmental Ltd and an anaerobic digestion plant in England started when the plant was experiencing impaired performance due to thickening of the digestate, crusting and reduced ability to mix the digestate. This resulted in increased electricity consumption, reduced biogas output and the need to improve the efficiency of the AD plant.

The anaerobic digestion plant uses “ring-in-ring” technology, in which an outer ring is fed with the substrates and its contents then overflow to the inner ring, where the anaerobic digestion of the substrates is completed.

The digestate

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