We kindly inform you that during the World Exhibition of Innovation, Research and New Technologies Brussels INNOVA 2016, which took place on 17-19th of November 2016, New Chemical Synthesis Institute Inorganic Chemistry Division "IChN" in Gliwice and Grupa Azoty S.A. in Tarnow for the invention: "Method for treatment of effluents containing sodium sulfate" by the authors: B. Pisarska, R. Dylewski, B. Cichy, M. Nowak, H. Jaroszek, W. Mikołajczak, H. Stopa, P. Baran, M. Gruszka, P. Markowicz, won gold medal and simultaneously awarded a special prize in the category of Chemical Engineering.The exhibition is the international event in the field of inventions exhibition dedicated to transfer of technology and implementation of technological developments.