| 释义 |
ferozone|ˈfɛrəʊzəʊn|
Also ferro-.
[Formerly a proprietary name, app. arbitrarily formed.]
A mineral substance containing ferrous sulphate and other metal salts formerly used as a precipitant in the treatment of sewage.
1888Brit. Pat. 11,663 8 Treatment of Sewage... Use corresponding sized pieces of basic-cinder or slag the refuse of steel works or ferozone or gypsum..or other porous and water purifying material. 1898[see polarite]. 1910Maxwell & Brown Encycl. Municip. & Sanit. Engin. 164/1 The object of ‘ferozone’ is to act as a precipitant and to assist in the disinfection and deodorisation of the sewage and sludge. 1927T. H. P. Veal Disposal of Sewage v. 66 Alumino-ferric and ferrozone are more expensive than lime but are more easily applied. |