Resource efficiency has become an important objective also in worldwide environmental politics. Using the related standard can make a contribution to the conservation of natural resources. This includes between other a reasonable use of water and the reduction of environmental pollution that contribute to preserve the living conditions of present and future generations.
As drought conditions and water pollution crises multiply, water is no longer viewed as a free commodity in processing environments. The food sector e. g. uses 70 percent of the world’s freshwater supplies, mostly for irrigation as an input to agricultural production. This in mind it is retraceable that the United Nations World Water Development Report 2017 entitled “Wastewater: The Untapped Resource” addresses the opportunities arising from improved wastewater management and seeks to inform about the importance of managing wastewater
In a world where demands for freshwater are continuously growing, and where limited water resources are increasingly stressed by different factors, very promising opportunities arise from improved wastewater management that includes the production of irrigation water from sewage effluents. But as in some areas this kind of wastewater has an increased salinity, one step in the treatment process needs to be desalination, being used usually the membrane process reverse osmosis. The same applies if salty well water needs to be used as source water for irrigation. Thereby a reliable control of the purification efficiency or quality of the treated water respectively is of eminent importance.
Details addressing the use of reverse osmosis considering decentralized solutions for desalination of salty sewage effluents for a special case in Spain and of brackish well water for an agricultural area in Peru, that contribute to improve the resource efficiency of irrigation, will be presented...
Session: M7 - Process and Waste Water Treatment II
Day: 15 March 2018
Time: 13:00 - 14:15 h