Powerful and strong
Driven by a tractor, the seven meter long mixer is put into operation and slowly lowered into the 5,000 cubic meter lagoon. In combination with the tractor’s lifting mechanism and a hydraulic upper linkage, the optimal position of the agitator rod in the lagoon can be easily adjusted from the driver’s seat. First, the digestate is mixed on the surface for a few hours. After that, the mixer is lowered to stir the liquid at the bottom of the lagoon. The Bauer MTXH‑L mixer can be used at a speed of up to 1,000 rpm (in this case however, Listech recommends 600 to 700 rpm).
To ensure that the entire lagoon is mixed, the mixer is used at different points. “It is important to start the mixer 24 hours before the start of spreading and to keep it running during this time so that the digestate is optimally mixed and can be easily spread onto the fields with the umbilical system,” says Lagenette. After use, the mixer only needs to be washed and greased.