Dewaterability of thermophilic digestate: Characteristics and underlying processes: A heuristic comparison of mesophilic digestion, thermophilic digestion and digestate ammonia stripping on the site of Bath WWTP, Netherlands

In a WWTP operating with full scale mesophilic digestion, a thermophilic digestion pilot and a digestate ammonia stripping pilot were installed. Benefits of the aforementioned sludge treatment processes, such as energy and nutrient recovery, are extensively recognized. However, drawbacks, such as deficient sludge dewatering, are amply...

Worm predation on excess activated sludge: Solids reduction capabilities and biochemical changes

Aerobic, anaerobic and worm predated sequential batch digestion experiments were performed on waste activated sludge in order to compare the mechanisms and performances of these three digestion processes. The Tubifex Tubifex specie was chosen to simulate the worm predation process.