CHED 37 |
| Point of Use (POU) and Point of Entry (POE) products should be integrated in the train of water treatment unit processes to provide safe water to the consumers. Amount of water consumed by the consumer amounts to less than 0.5 percent of the water procured at the source and treated at the central treatment plant. This water quality requires to be tailored to fit the need of the consumers, including the special needs by some. Such a delivery of high quality water cannot be done economically or logically at the central plant. It can be better accomplished at the point of use/entry to the benefit of the consumers. Reverse osmosis, carbon adsorption, ion exchange, mechanical filtration, ultraviolet radiation, and distillation, are the frequently used processes in these devices. These processes have been used to reduce varying types of contaminants of concern that may be present in trace or low levels including inorganics, organics, particulates, and microbial contaminants. Capabilities of POU/POE units will be discussed. Specific examples of arsenic, lead, and VOC reduction by POU/POE units will be used to illustrate the capabilities of these devices. POU/POE devices can serve as an effective final barrier to provide an ultimate level of protection from the risk of contaminants present accidentally or unknowingly in treated waters supplied to the consumers in cities or in private rural households. The use of these devices in homes is valuable to the consumers in all countries of the world with deteriorating source water qualities due to increasing populations. |
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Educating the Public About the Challenges for Improving the Quality of Drinking Water
8:30 AM-12:10 PM, Sunday, March 25, 2007 McCormick Place North -- Room N227B, Level 2, Oral
Division of Chemical Education |