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Healthy Water ~ Healthy Life

Wednesday, Feb. 15th 2017

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(From WQA)

WQA provides detailed scientific analysis on the treatment of more than 15 specific contaminants, including aluminum, barium, copper, fluoride, lead, mercury and uranium. These bulletins, written and reviewed by experts in the field, offer contaminant descriptions, health effects and treatment options. Visit wqa.org/technicalbulletins. Some excerpts:

Arsenic – Current technology suggests that several techniques may be used for removing the arsenite, arsenate, and organic forms of arsenic from drinking water including iron based systems, activated alumina media filtration, manganese greensand filtration, anion exchange, distillation, and reverse osmosis.

Chloramines – To improve the taste and odor of drinking water, chloramines often must be removed. Because they are small, stable molecules with no net charge, they can be difficult to remove by distillation, reverse osmosis (RO) and ion exchange resins. The most effective nonchemical method for removing chloramines is activated carbon.

Lead – POU/POE products are considered to be the preferred method for lead removal, since most lead in drinking water is the result of corrosion in the water distribution and home plumbing system. These include RO, strong acid cation exchange (Na+ form), distillation, and solid block and precoat adsorption filters (i.e. properly designed submicron filtration with adsorption media).

Nitrate-Nitrite – Current technology suggests that several techniques may be used for removing nitrate from drinking water including chemical reduction, ion exchange, reverse osmosis, electrodialysis, and distillation. At the present time, it appears that three methods, ion exchange, distillation, and reverse osmosis, are considered to be practical and economically feasible for nitrate removal when considering POU or POE devices.

Radium – RO and distillation have proven to be effective at reducing radium. There are established protocols for reducing radium by cation exchange softeners, reverse osmosis systems, and distillers. Discharge regulations for wastewater containing radium may vary from area to area.

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