Sludge is a semi-solid material that stems from industrial or domestic wastewater treatment plants or waste treatment plants. Sludge is considered waste, but the increasingly stringent rules and economic charges for disposal, together with the “closing the loop” approach to waste, lead to consider the possibility of reuse of sludge in agriculture with increasing attention as such or after composting.
In addition to reducing the quantity of material to be disposed of, this solution can represent a valid agronomic fertilization strategy. Another alternative is the use of this biomass as an energy source, as useful material for the production of biogas.
Sludge must be suitable and must not contain toxic or noxious or bio-accumulative substances that could harm man or the environment in general. These conditions are the fundamental principle on which the assessment of the suitability on the agronomic level or for the use in biogas plants has to be based.
Mérieux NutriSciences carries out analytical tests on sludge from sewage treatment plants or organic waste from waste treatment plants. The testing service allows the characterization of sludge and the identification of their correct reuse in agriculture or in the production of biogas and for sludge coming from water treatment plants, the service provides valuable information about the efficiency of purification processes.