The PROELEC wastewater treatment plants were first developed in 2003 in Barcelona, by the former industrial automation and control company called Procontrol, as a result of its, then, 30 years’ knowledge and experience in industrial plants and processes of all kinds. At present, PROELEC includes various engineering, control, automating companies and specific industrial suppliers, and wastewater treatment companies, with a technical potential of more than 50 experienced specialists and know-how accumulated since 1969.