He won two bronze medals, as a member of the Belgian swimming team, in the 4×50 m freestyle relay at the 2011 European Short Course Swimming Championships in Szczecin, Poland, and at the 2012 European Short Course Swimming Championships in Chartres, France. He also captured a silver medal in the 50 m freestyle at the 2010 European Junior Swimming Championships in Helsinki, Finland by a quarter of a second (0.25) behind Ukraine's Andriy Hovorov, in a personal best of 22.79. Aerents is a member of Regal Swimming Club () in Belgium, and is coached and trained by Rik Valcke.