What is the purpose of biosolids stabilization?

Biosolids stabilization is primarily aimed at reducing pathogens and odors in organic solids. This process ensures that biosolids, which are the nutrient-rich organic materials resulting from the treatment of sewage or industrial wastewater, can be safely recycled and reused. By stabilizing biosolids, the harmful microorganisms that may pose health risks are significantly reduced, making the material safer for land application and reducing unpleasant odors associated with decomposition.

Stabilization techniques, such as anaerobic digestion, aeration, and lime stabilization, help to convert the raw biosolids into a more stable end product. This not only protects public health and the environment but also enhances the usability of the biosolids, allowing them to be used as fertilizers or soil amendments.

Through this process, the overall quality and safety of the biosolids are improved, facilitating compliance with regulatory standards for land application and reducing potential nuisances related to odor.