If sludge disposal requires transportation over long distances, reducing the volume of sludge to be removed can considerably lower operational expenses. Thermal hydrolysis achieves this in two ways, by turning more organic matter into biogas, and by increasing the efficiency of the final dewatering step. In short, less organic matter and water to be transported for final disposal can be good money.
The biosolids product resulting due to thermal hydrolysis is sterilised, easy to store and handle and can be applied to land as organic fertiliser or soil improver. Even if local regulations require incineration, the product is still of higher quality and cheaper to dispose of.