1) Water technology
Found on
https://www.crosswordclues.com/clue/water-softening
Compare with water softener and water hardness. Removal of Ca
2+ and Mg
2+ from water to prevent undesirable precipitation reactions from occurring in plumbing, pools, washwater, and boilers.
Found on
http://antoine.frostburg.edu/chem/senese/101/glossary/w.shtml
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water is more compatible with soap and extends the lifetime of plumbing. Water softening is usually achieved using lime softening or ion-exchange resins. ==Problems with hard water== The presence of certain metal ions in water ca...
Found on
http://en.wikipedia.org/wiki/Water_softening
(from the article `hard water`) ...small scale by the addition of ammonia, borax, or trisodium phosphate, together with sodium carbonate (washing soda). The latter precipitates the ... Ion exchange finds its major industrial application in the treatment of water. Hard water—caused by the presence of calcium and magnesium ions, whic...
Found on
http://www.britannica.com/eb/a-z/w/14
No exact match found.
