- softening of hard water
- 硬水软化
Medical Chinese dictionary (湘雅医学词典). 2013.
softening of hard water
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Hard water — is the type of water that has high mineral content (in contrast with soft water ). Hard water minerals primarily consist of calcium (Ca2+), and magnesium (Mg2+) metal cations, and sometimes other dissolved compounds such as bicarbonates and… … Wikipedia
water softener — n. 1. a chemical compound added to hard water to soften it, as by precipitating out the minerals 2. a tank or other container in which water is filtered through any of various chemicals or ion exchange media for softening … English World dictionary
Water softening — A water softener reduces the dissolved calcium, magnesium, and to some degree manganese and ferrous iron ion concentration in hard water.These hardness ions cause three major kinds of undesired effects. Most visibly, metal ions react with soaps… … Wikipedia
Water quality — A rosette sampler is used to collect samples in deep water, such as the Great Lakes or oceans, for water quality testing. Water quality is the physical, chemical and biological characteristics of water.[1] It is a measure of the condition of… … Wikipedia
Water purification — This article is about large scale, municipal water purification. For portable/emergency water purification, see portable water purification. For industrial water purification, see deionized water. For distilled water, see distilled water. Water… … Wikipedia
water — n. & v. n. 1 a colourless transparent odourless tasteless liquid compound of oxygen and hydrogen. Usage: Chem. formula: H2O 2 a liquid consisting chiefly of this and found in seas, lakes, and rivers, in rain, and in secretions of organisms. 3 an… … Useful english dictionary
water softener — noun a device which reduces the calcium and magnesium concentration of hard water by passing it through an ion exchange resin See Also: water softening … Wiktionary
softening salt — additive for dishwashers which helps removes minerals from hard water … English contemporary dictionary
Magnetic water treatment — General Arrangement of MWT Apparatus Magnetic Water treatment[1] usually by the application of a changing Magnetic flux is a proposed method of water softening[2] … Wikipedia
Soft water — the term used to describe types of water that contain few or no calcium or magnesium metal cations. The term is usually related to hard water , which does contain significant amounts of these ions.Soft water usually comes from peat or igneous… … Wikipedia
Purified water — Bottle for Distilled water in the Real Farmacia in Madrid Purified water is water from any source that is physically processed to remove impurities. Distilled water and deionized (DI) water have been the most common forms of purified water, but… … Wikipedia
