Damien CAZALET is deputy head of the technical department at Veolia Wasser Deutschland GmbH. He also have more than 10 years experience as a project engineer in process and energy optimisation of municipal wastewater treatment plants. In the frame of the H2020 project Powerstep. He assessed the implementation of innovative wastewater treatment concepts in 20 municipal wastewater treatment plants in Europe with the target to make WWTPs energy-positive.