Slurry evaporation tunnel.
The solution to the slurry, only with solar radiation
It consists in evaporating the clarified fraction from the pig or cattle slurry concentrating to 90 % of the nitrogen in the solid fraction resulting 10 % of the initial volume.
Validated system in the BAT.
The system can be combined with other treatments to make the distribution of nutrients more efficient (flocculation, NDN sludge…).