Sludge liming: blend quality and impact on mechanical properties

Abstract

Liming is currently the most used way to stabilize sludge. To maintain a high level of efficiency, the blend must be as intimate as possible. In practice, however, there are a lot of heterogeneities such as lime agglomerate. Optimizing the process implies a better definition of blends and a deeper knowledge of mechanical properties. This paper intends to understand the evolution of rheological properties in relationship with lime concentration and storage time.