The energy in biogas can be exploited in different ways. For example, it can be used for local heating or remote heating (via district heating networks). Biogas can also be used to generate electricity, thus contributing to an increased proportion of ‘green electricity’ distributed through the grid.

Biogas as vehicle fuel is the area of application increasing the most rapidly. Biogas that has been purified and upgraded to contain a high proportion of methane may with advantage be used as a vehicle fuel. Methane can also be used as a raw material in various manufacturing processes, with diverse final products such as paints, plastics, furniture, animal feeds and lubricant oils. In addition, the biogas process generates a nutrient-rich digestion residue, that can be used as a fertilizer.

In Sweden, biogas has been produced at municipal wastewater treatment plants since the 1960´s. The primary incentive was to reduce sludge volumes. However, the oil crises of the 1970´s changed attitudes, leading to research and development into biogas techniques and the construction of new plants in order to reduce environmental problems and dependency on oil. Industry was first to act; sugar refineries and pulp mills started to use anaerobic digestion for waste water purification in the 1970´s and 1980´s. At this time, several smaller farm-sized plants were also constructed for anaerobic digestion of manure.

During the 1980´s, several landfill plants started to collect and utilize biogas produced in their treatment areas, an activity that expanded quickly during the 1990´s. Several new biogas plants have been constructed since the mid-1990´s to digest food industry and slaughterhouse wastes, and kitchen wastes from households and restaurants.

Source: www.biogasportalen.se


Companies

Airec AB

Develops and manufactures compact plate heat exchangers.

ATEK Avvattningsteknik AB

ATEK offers products and services in water treatment and biogas production.

Biofrigas AB

Biofrigas Sweden AB offers facilities with a unique technology that makes it possible to upgrade and liquefy biogas for small-scale production in agriculture, smaller treatment plants and industry.

Biogas Systems Nordic AB

Biogas Systems Nordic AB offers facilities with a unique technology that makes it possible to upgrade and liquefy biogas for small-scale production in agriculture, smaller treatment plants and industry.

All Companies

Reference Cases

Cleaner air in Stockholm with sewage sludge

Two sewage treatment works in Stockholm are producing biogas from sewage sludge. After having purified the gas, it can be used for both heating and vehicle fuel and in addition creates no net emissions of carbon dioxide. Consequently, the treatment works have reduced their amount of emissions and become energy suppliers. Therefore, sewage sludge is no longer an environmental problem, but an important energy resource.

Environmental investments in Vällingby Centrum

Svenska Bostäder have invested over three million Swedish kronor in an installation for geothermal energy and a recycling central. Thanks to the investment, Vällingby Centrum produces nowadays its own energy, which provides the shopping centre with 60 % of its need for heating and 90 % of its need for cooling.

Käppala – an efficient water treatment plant

Käppalaverket is one of the world’s most efficient water treatment installations, with the entire northern Stockholm as a catchment area. Apart from the fact that the installation treats water for over 500 000 people, it also produces biogas, running 100 busses.

Sjöstadsverket tests new treatment methods

Hammarby Sjöstadsverket in Stockholm, Sweden, was built as part of the Hammarby Sjöstad initiative, with the aim of halving environmental impact by demonstrating new technology and innovative solutions. The facility is now continuing to serve as a development centre for new water treatment technology.

All Reference Objects
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