Evaluation of Biosolids Stabilization Requirements for Organic Recycling

Today, the emphasis on resource recovery from biosolids has sparked a renewed interest in improving biosolids quality, with the goal of enhancing public acceptance of biosolids products applied to the land. Improving biosolids odors is a key focal point of that effort. Toward that end, there is an increasing focus on the concept of biosolids stability, its relationship to product odors, and methods to measure this important parameter. This paper explores the historic vision of biosolids stability, limitations with current measurement approaches, potential new approaches that might be considered, and potential frameworks (regulatory or industry-based) for a new stability paradigm.