This project examines the properties of concentrated sludge arising from increased pressure on the capacity of wastewater treatment plants.
Growing urban populations means that wastewater treatment plants are under pressure to treat increasing volumes of wastewater within existing plants. This means that the sludge that circulates in the anaerobic digesters is more concentrated. The rheological characteristics of concentrated sludge are harder to predict, and this reduces the efficiency of the system.
Our researchers are solving this problem by developing a model for more accurate prediction of the final rheological properties of three blended sludge types. The new model will be used to control the ratio of the feed stream to digester content with the aim of achieving the best possible mixing performance and biogas production.