Test Reactor (IMAGE) Delft University of Technology Caption A test reactor for the new aerobic granular sludge technology (Nereda TM). Credit Merle de Kreuk, TU Delft Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.