Two case studies are included, one in the area of Barcelona, Spain and one in the district Alfajayucan, north of Mexico City. The aim of the research project is to verify the hydrological, ecological and economic advantages of a better use of natural waters in the regions suffering from water shortage.
The reuse of urban waste water can only help to relieve waters and to prevent an excessive use of groundwater when taking the hygienic conditions (like the WHO limits) into account. Above that the irrigation of agricultural areas with poor quality water can ease the water problems prevailing in many regions of the world. And as the use of poor quality water in agriculture saves high quality water (e.g. ground water) for the urban population (“intersectoral water transfer”), it can even improve the drinking water supply.
It is essential to point out that the reuse of urban waste water for agriculture is advantageous as it prevents the loss of earnings and it renders costly or rather ecologically controversial irrigation systems like, for example, expensive advection of water over great distances, construction of dams, etc. unnecessary. Furthermore it has to be verified that the water exchange between agriculture and cities – processed waste water for high quality drinking water – is profitable for both sides. The cities have a secure basis for their drinking water supply and avoid the high costs of water purification, -tapping and -advection. Then again the cost savings enable them to effect equalization payments for the farmers.
Dr. Ingo Heinz from INFU is in charge of the research project which the Agencia Catalana de l’Aigua in Barcelona as well as Dr. Collado, director of Hidropolis Consultants in Mexico City and Dr. Pimentel, president of the Mexican National Committee of the International Commission on Irrigation and Drainage (ICID) take part in.
The research report will be published as a FAO Water Report under the title “Economic Framework of Reuse of Poor Quality Waters in Agriculture” and distributed to all relevant authorities in the UN member countries in 2008.
Ole Luennemann | alfa
Kakao in Monokultur verträgt Trockenheit besser als Kakao in Mischsystemen
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For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems Holding GmbH about commercial use of a multi-well tissue plate for automated and reliable tissue engineering & drug testing.
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems...
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