This lecture covers the operation of wastewater treatment plants using activated carbon and oxidation processes to remove organic micropollutants. The instructor explains the transportation, application, and regeneration of activated carbon, as well as the challenges and costs associated with sludge treatment. The lecture also delves into the design and operation of ozonation plants, emphasizing the importance of efficient ozone transfer and reaction kinetics. Case studies of Swiss wastewater treatment plants using ozonation and activated carbon are presented, highlighting the considerations for industrial wastewater treatment and the optimization of treatment processes.