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HZI to supply Kompogas plant to German composting facility

Switzerland-based energy from waste technology provider Hitachi Zosen Inova AG (HZI) has announced that it has been awarded a contract by Entsorgungswirtschaft Soest GmbH (ESG) to build a "Kompogas" dry fermentation plant at ESG's composting facility in Anröchte, Germany. The order includes a steel plug-flow digester with integrated feeder, biogas gas storage facility and two cogeneration plants for needs-based power generation.

HZI is to supply a Kompogas dry fermentation plant to ESG’s composting facility in Anröchte, Germany. The delivery includes a single plug-flow steel digester with an integrated feeder, a biogas storage facility and two cogeneration plants for needs-based power generation. The order marks the 22nd Kompogas plant in Germany whereas in Sweden (pictured above), HZI saw the recent commissioning of its first Kompogas delivery in the Nordics.

According to HZI, the contract was awarded by ESG on September 25 and construction of the plant is planned to begin in May 2019 with operation start expected at the beginning of 2020. The order, the value of which has not been disclosed, marks the 22nd Kompogas plant in Germany.

Proven Kompogas dry fermentation technology

The heart of the plant is a 1 500 m3 Kompogas plug-flow digester for the anaerobic digestion (AD) of 15 000 tonnes per annum of source separated organic waste. This will produce around 1.5 million Nm3 per annum of biogas which will be fed to two downstream cogeneration plants with a total installed capacity of 1 MWe.

Approximately 3.5 GWh of electricity will be generated annually from the processed organic waste, which is approximately the consumption of 1 100 German households. The residual heat from the cogen units will be used heat by the adjacent composting plant.

Our Kompogas technology is already being employed successfully in more than 90 plants around the world, generating renewable and environmentally friendly biogas from organic waste. We are proud to have this opportunity to make a further contribution towards Germany’s efforts to achieve its ambitious climate goals with this 22nd Kompogas plant, said Dr Helen Gablinger, Head of AD Sales at HZI.

Needs-based power generation

A feature of the Kompogas plant in Anröchte is that it addresses a further challenge facing today’s energy industry: ensuring a stable supply of electricity during peak loads on the grid. The two cogeneration units differ in size.

The first, smaller unit is dimensioned so that it covers the constant heating and power needs of the entire plant, including the composter. The second, more powerful unit, only goes online to feed electricity into the public grid during day-to-day peak loads.

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