Moses Nyakana (Uganda)

IHE Delft│Netherlands

Alternative pre-treatment techniques for waste activated sludge (Netherlands)

Anaerobic digestion of waste activated sludge (WAS) presents a sustainable and cost-efficient way of dealing with excess sludge generated by conventional activated sludge (CAS) systems. This is because it leads to the generation of methane while also facilitating sludge reduction and the recovery of resources. In my study, hydrogen sulfide pre-treatment of WAS increased the generation by up to 54% of volatile fatty acids (VFA) that can be used for resource and energy recovery. My findings could lead to the development of alternative pre-treatment techniques to maximize resource recovery and their valorization in wastewater treatment plants.