Wastewater

Pay Drechsel is a trained environmental scientist working since 20 years in the domain of applied natural resources management in developing countries. Pay has worked extensively on biophysical, social and economic aspects of safe wastewater use and the recovery of nutrients from solid and liquid waste for urban and peri-urban farming systems. After several years with the International Board for Soil Research and Management, Pay joined in 2001 the International Water Management Institute (IWMI) where he is currently leading the global Theme on ‘Resource Recovery, Water Quality and Health’. Under the IWMI-led CGIAR Research Program on Water, Land and Ecosystems, Pay is coordinating the flagship program on ‘Recovering and Reusing Resources in Urbanizing Ecosystems’. Pay has worked extensively in West and East Africa, but also South and South-East Asia and is based at IWMI HQ in Sri Lanka. Manzoor Qadir is water and soil management scientist with focus on developing countries and interests in water recycling and safe and productive use of wastewater, water quality and environmental health, and amelioration of salt-induced land degradation. Manzoor has managed and implemented multidisciplinary projects and directed research teams in Central and West Asia and North Africa. Before joining the United Nations University – Institute for Water, Environment and Health (UNU-INWEH) in Canada in 2012, Manzoor previously held professional positions as Senior Scientist jointly appointed by the International Center for Agricultural Research in the Dry Areas (ICARDA) and the International Water Management Institute (IWMI); Visiting Professor at the Justus-Liebig University, Giessen, Germany; and Associate Professor at the University of Agriculture, Faisalabad, Pakistan. He is a fellow of the Alexander-von-Humboldt Foundation and serves on the Editorial Boards of several international journals. Dennis Wichelns is an agricultural and natural resource economist, withparticular interests in water, irrigation, food security, and livelihoods. Dennis has served as a lecturer and researcher for many years, including a three-year assignment with the International Water Management Institute (IWMI) in Sri Lanka, from where he interacted regularly with colleagues and research partners across Asia and Africa. In the United States, Dennis has served as an economist with the California Water Institute and also with the Rivers Institute at Hanover College. Dennis serves currently as one of the editors of Agricultural Water Management and as chief editor of Water Resources & Rural Development.

• ​Part I. Introduction and background.- Part II. Socio-economics of wastewater use.- Part III. Costs and benefits.- Part IV. Thinking business.- Part V. Outlook.