Sewage Sludge

Sewage sludge is the semi-solid residue that remains after wastewater treatment. When sewage water is processed to remove contaminants, the leftover material, rich in organic matter and nutrients, is collected as sludge. This byproduct can be managed in various ways, including composting, incineration, or being used as fertilizer in agriculture, although it must be treated to eliminate harmful pathogens and pollutants. Proper management of sewage sludge is essential for environmental protection and public health, as it can minimize waste and reclaim useful resources.