Dr. Choo is a professor in the Department of Environmental Engineering and the Director of the Advanced Institute of Water Industry at Kyungpook National University, Korea. He received his Ph.D. degree from Seoul National University, Korea in 1996 and since then has been working on membrane technology for water and wastewater treatment, pursuing breakthrough innovations for novel membranes and membrane processes. His recent research interests include electrochemical membrane filtration, quorum quenching membrane bioreactors, and iron oxide coated media filtration. He is keen to find synergistic strategies for the best practices of separation, treatment, abatement, and recovery on the management of water and wastewater streams. He has been involved in academic societies, such as Korean Society of Environmental Engineers, Membrane Society of Korea, International Water Association, American Chemical Society, and World Filtration Congress as an active member. He served as the Director of the Center for Blue Gold Cluster (Water Reuse R&D Center) funded by the Korean government and currently serves as a management committee member of the IWA Specialist Groups.