1. Blue Plains Advanced Wastewater Treatment Plant District of Columbia Water and Sewer Authority Washington DC USA
2. Department of Civil and Environmental Engineering The Catholic University of America Washington DC USA
3. Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering University of Antwerp Antwerp Belgium
4. Department of Civil, Environmental and Architectural engineering The University of Kansas Lawrence Kansas USA
5. Hampton Roads Sanitation District Virginia Beach Virginia USA
6. ARA consult GmbH Innsbruck Austria
7. NEWhub Corp. Herndon Virginia USA