Deionized water, also known as demineralized water (DI water or de-ionized water; can also be spelled deionised water), is water that has had its mineral ions removed, such as cations from sodium, calcium, iron, copper and anions such as chloride and bromide. Deionization is a physical process which uses specially-manufactured ion exchange resins which bind to and filter out the mineral salts from water. Because the majority of water impurities are dissolved salts, deionization produces a high purity water that is generally similar to distilled water, and this process is quick and without scale buildup. However, deionization does not significantly remove uncharged organic molecules, viruses or bacteria, except by incidental trapping in the resin. Specially made strong base anion resins can remove Gram-negative bacteria. Deionization can be done continuously and inexpensively using electrodeionization.
By ADVANCED Equipment and Services based in Hollywood, FLORIDA (USA).
Deionized water, also known as demineralised water, is water that has had its mineral ions removed, such as cations like sodium, potassium, calcium, magnesium, iron, and anions such as chloride, nitrate, sulfate, bicarbonate and even silica. Deionization is a chemical process that uses specially manufactured ion exchange resins which exchange hydrogen ion and hydroxide ion for dissolved minerals, which then recombine to form water. Because the majority of water impurities are dissolved salts, deionization produces a high purity water that is generally similar to distilled water, and this process is quick and without scale buildup.
By PuriTech Ltd based in Herentals, BELGIUM.
The growing demand placed on the world’s water, in combination with more stringent water quality regulations, have placed unprecedented demands to provide safe, reliable and aesthetically pleasing drinking water. Air stripping is an effective way of removing volatile organic chemicals (VOCs) from contaminated water and is commonly used for this application. Air stripping systems mix air with a water supply with the goal to generate the largest possible air-water contact area so that VOCs and dissolved gases, such as radon and hydrogen sulfide, will move from the water to the air. In addition to removing VOCs, air stripping is primarily used for removing oxidizing contaminants such as iron and manganese, improving taste, or removing odor. Air stripping is an EPA Best Available Technology (BAT) for some VOCs including benzene, toluene, xylene, tri/tetrachloroethylene, trihalomethanes, vinyl chloride and many others.
By Mazzei Injector Company, LLC based in Bakersfield, CALIFORNIA (USA).
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