Anaerobic Digestion

Anaerobic digestion is the process of micro-organisms breaking down organic material in the absence of oxygen. Organic waste material (food wastes) is processed through an oxygen-free environment (digestor) infused with a population of anaerobic micro-organisms. These micro-organisms convert the organic polymers from the feedstock into methane-rich biogas and nutrient-rich digestate. The methane (biogas) is treated to remove sulphur and water into clean biogas. This biogas can be used for heating, cooking and energy. Any material remaining from the initial feedstock that has not been converted by microbial activity is bound as a solid or semi-solid digestate. This digestate is an effective microbial-rich probiotic fertiliser.