Biogas to Energy

BIOGAS to ENERGY
Renewable energy. The possibilities offered by biogas utilisation.
The calorific value of the gas produced in the digesters during anaerobic stabilisation amounts to approximately 6.5 kWh/m3. This corresponds with more than half of the calorific value of natural gas (~10 kWh/m3). If the biogas is employed for energy generation purposes, electrical and thermal energy can be obtained for the in-house supply of treatment plants or feeding into the public grid.
Generation of electrical energy and waste heat in a combined heat and power plant:
 ~35-40% electrical energy, ~60% thermal energy.
 1 m3 biogas = 6.5 kWh = 2.3 kWh electrical + 4.2 kWh thermal energy
 Direct employment in gas engines
 Thermal utilisation through the generation of steam or hot water
Efficient utilisation means that a largely independent energy supply can be guaranteed with regard to the provision of the treatment plant with electricity for purposes such as the aeration of the activated sludge tanks, digester and building heating, and the hot water supply.
Large treatment plants can cover up to 100% of their energy needs through in-house generation.