Anaerobic Digestion

Anaerobic digestion can reduce energy costs, generate carbon credits and help reduce climate change.

It is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen.

Anaerobic digestion is used for industrial or domestic purposes such as wastewater treatment to manage waste and release energy,.

As part of an integrated waste management system, anaerobic digestion reduces the greenhouse gas emissions that are generated by the decomposition of organic waste.

Biogas can be generated from any organic waste, typically on sites where there is either a high organic waste content or a weaker organic content but large volumes of waste. Specific parameters such as the volume of biogas generated, methane content of the biogas and related water quality issue can be measured through on-site or remote monitoring.

Biogas includes methane, which according to the Intergovernmental Panel on Climate Change has a global warming potential that is 21 times greater than carbon dioxide.

Anaerobic digesters therefore offer a number of positive outcomes for business:

• Utilisation of site resource (waste stream) to generate energy (heat/power), as a result reducing site energy costs.

• Generation of carbon credits for the amount of reduction in carbon as a result of the methane destruction and potentially displaced fossil fuel − creating a potential financial return.

• Reduction in CO2e emissions, which has a positive outcome on climate change.