EPPINGEN-MÜHLBACH – ENSPAR Biogas GmbH has designed and supplied a biogas plant for slaughter waste to Eastern Europe. A highly efficient and energy-efficient biogas plant has been put in operation at a big farming and slaughtering company at the beginning of 2017. The Plant generates biogas with a capacity of 800 kW, up to 32,000 t/year of slaughter waste can be processed and fermented.
The biogas plant – which is operating as a closed system – is integrated in the farm within the area where the slurry storage is located. The biogas plant was designed as a multi-stage and anaerobic wet fermentation process, for the fermentation of organic waste and renewable raw materials. Particular emphasis was placed on a low-energy and low-emission operation.
Produced and stored in four stainless steel fermenters, the biogas is used to produce electric energy by means of four gas turbines. Before, the bio gas is biologically pre-desulphurised, dried and finely desulphurised via an activated charcoal filter. The waste heat from the turbines is treated with exhaust heat exchangers and used for the hygienisation of the slaughter waste, for the temperature control of the fermenters as well as for heating of stables, etc.
The material handling area consists of a pit in which the components for material feeding, crushing and interim storage of the slaughter waste are placed. A Bio-Turbo-Crusher type Bio-TQZ900 from THM recycling solutions GmbH is used for crushing of the slaughter waste.
For material processing a new hall was built, which is divided into a white and a black area. All equipment for material feeding, pumping, processing and control were installed in the same building.
The treatment of the slaughter waste takes place via a multi-stage crushing and heating arrangement. Liquid substrates such as blood are taken separately and subsequently sterilized together with the crushed slaughter waste. After a final cooling process, the mixture is fed to the biogas plant for fermentation.
The on-site support during installation, commissioning and during the start-up phase of the plant were carried out by an experienced ENSPAR engineer.