The ash from poultry manure, which contains Phosphorus (P) and Potassium (K) is approx. 8%-10% of the weight of the manure. This is twenty times more ash than a traditional woodchip boiler.
The BHSL plant is designed to remove the ash at various points in the combustion process. – the sand recycling, the heat exchangers and the bag filters.
Horizontal and inclined screw conveyors deposit the ash into bags which can be transferred off site for nutrient recycling.