The groundwater in the Red River and Mekong Delta regions in Vietnam is contaminated with naturally occurring arsenic. Geological conditions here are comparable to those in the Ganges Delta region in India and Bangladesh. Experts estimate that some 10 million Vietnamese may be routinely consuming arsenic-contaminated water.
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Earlier this month, the largest adsorber plant for the removal of arsenic from drinking water in Germany went into operation.
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In some cases, copper and zinc have to be removed from rain water from roof drainage. A research project at the ETH Zurich developed a new system, which is using GEH to bind the heavy metals.
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In the context of the Olympic Games in Beijing 2008, the 1,200 hectar Olympic Park was created, accomodating the Olympic Lake. Due to the water shortage of the near area, the lake was filled using waste water. A joint Chinese-German research project, funded by the German Ministry for Research and Education, developed an energy-efficient treatment process to meet the quality criteria for the lake water. GEH 104 was used to remove phosphate from the waste water to prevent unwanted algae growth.
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