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Utilizing Methane from Wastewater Treatment Plants for Electrical Power Production

Numerous wastewater treatment plants utilize waste gas or digester gas derived from wastewater treatment as a fuel source for generator sets, specifically gas engines. This gas primarily consists of methane and carbon dioxide, produced by wastewater digesters employed in the water treatment procedure. This waste gas is subsequently harnessed and employed by MWM gas engines to supply the facility with both electricity and heat, benefiting the digester or other thermal requirements.

Waste gas has a heating value between 6 and 6.4 kWh/m3 as well as a fluctuating methane content based on its organic raw materials. The heat generated during power production is utilized as process heat in the wastewater treatment plant and thus saves additional energy costs.




Benefits from Methane-to-Energy Projects Include:

  • Increased energy efficiency

  • Reduced electricity costs

Decreased environmental impact

A durable gas engine specifically designed for use with low-energy fuel is the cornerstone of a reliable electric power system. This gas engine drives a generator set to produce electricity.



Our gas engines offer a specialized tolerance to the contaminants in sewage gas fuels by offering additional features.

Features:

  • A crankcase ventilation pump to eject potentially acidic blow-by gases

  • Specially designed aftercooler cores, cylinder heads, main bearings and connecting rod bearings that are hardened against corrosive elements

  • A differentiated cooling system to operate at elevated jacket water temperatures to prevent condensation of contaminants


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