International technology Group ANDRITZ has successfully completed the start-up of a Universal Cross-Flow Shredder Bio-QZ in the biogas plant of the Holzhof cheese factory in Bissegg, Switzerland.
The Andritz Universal Cross-Flow Shredder Bio-QZ, type 1200, processes up to 20,000 T of biomass per year consisting of biological waste from agricultural food and milk production. The cell structure of the substrates is broken up in order to maximize the contact surface for the fermentation bacteria, causing biogas formation to begin sooner and more intensively. The main advantage of the Bio-QZ is the special separation of organic components from other inorganic elements.
The new biogas plant with a capacity of 800 kW is operated in Switzerland as a model plant for biomass use. The plant at the Holzhof cheese factory is the first in Switzerland to be integrated into a farm with a cheese production plant attached. The resulting residual biomass is used to generate electricity for the farm itself as well as for another 1,500 households in the area.
The Holzhof cheese factory in Bissegg, Switzerland, is a family business in the fifth generation and processes up to 2.2 MML of milk every year to make cheese.
Andritz is an international technology group providing plants, systems, equipment, and services for various industries. The company is one of the technology and global market leaders in the hydropower business, the pulp and paper industry, the metal working and steel industries, and in solid/liquid separation in the municipal and industrial segments. Other important fields of business are animal feed and biomass pelleting, as well as automation, where they offers a wide range of innovative products and services in the IIoT (Industrial Internet of Things) sector under the brand name of Metris. In addition, the company is active in power generation (steam boiler plants, biomass power plants, recovery boilers, and gasification plants) and environmental technology (flue gas and exhaust gas cleaning plants) and offers equipment for the production of nonwovens, dissolving pulp, and panelboard, as well as recycling plants.