Sewage Gas

Managing energy costs and the requirement to improve sustainability measures within local authorities and municipalities can be realised through Combined Heat and Power (CHP) application.

Through the process of anaerobic digestion, the biogas produced by the wastewater digesters used in the water treatment process is captured and used within MWM gas engines to power the waste treatment plant. The electricity produced can either be used on-site to reduce grid imported electricity costs or exported to the electricity grid for income generation.

Recent environmental requirements and process innovations have led to advanced anaerobic digestion where the sewage sludge is pre-treated thermally and/or enzymically before the digestion process. This pasteurises the sludge and increases conversion to biogas. Often the process requires steam for heating and this is produced from the exhaust heat of the Combined Heat and Power (CHP) plant.

Renewable energy generated from a waste material through Combined Heat and Power (CHP)

Reduces operational costs

Export power used as an income generation tool

Reduces CO2 emissions

Cost-effective and proven technology

Sewage Gas to Power

Mogden Sewage Treatment Works utilises a 6MWe Combined Heat and Power (CHP) plant which replaced the sites existing dual fuel system. The CHP installation significantly improves serviceability, availability, power generation and reduces carbon emissions.

Elsewhere, the facility is capable of treating 50 percent more sewage waste to cater for London’s growing population and meets the tighter effluent quality standards set by the Environmental Agency.

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