Specification of George MacKay : purifying water, sewage, &c.

  • Mackay, George.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George MacKay : purifying water, sewage, &c. Source: Wellcome Collection.

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    Mackay's Improvements in Apparatus for Purifying Water, Sewage, fyo. per-salt of iron, with which admixture any suitable sub-salt of iron may be combined; and second, with a quantity of alkali or alkaline earth, substantially as herein-before described. Second. Obtaining per-chloride of iron by digesting from 3 to 5 parts 6 of hydrated per-oxide of iron, otherwise known as bog ore or ochre, with 1 or 2 parts of muriatic or hydrochloric acid and wTith or without the aid of heat, substantially as herein-before described. Third. Recovering, treating, and utilizing the matters or “ sludge,” whether animal, vegetable, or mineral contained in impure water or 10 other liquids by treating the said wrater or liquids with per-salts of iron (combined or not with sub-salts) and with alkali or alkaline earth, sub¬ stantially as herein-before described. Fourth. The recovery and utilization of the matters or “ sludge ” deposited from impure liquids by natural gravitation by admixing the 15 said matters with- a sufficient quantity of water to enable them to be agitated with the combined or admixed per-salts of iron, or by blending the said matters or “ sludge ” without admixture of water with a per¬ oxide of iron, substantially as herein-before described. Fifth. The recovery and utilization of the waste lime from paper mills 20 and other works by admixing it with a proportion of coal dust, sawdust, spent bark, or other suitable refuse, to which a proportion of soda liquor or “ ley ” is or may be added, and the arrangement or construction of kiln wherein the waste lime so admixed is calcined or burned and con¬ verted from carbonate of lime into caustic lime, substantially as lierein- 25 before described. Sixth/ Utilizing the waste bleach lime, either before or after being burned, as a substitute for or in conjunction with alum in the manu¬ facture of paper by treating the said lime in the manner herein-before described. t # 30 In witness whereof, I, the said George Mackay, have hereunto set my hand and seal, this Ninth day of July, One thousand eight hundred and seventy-five. GEORGE MACKAY. (l.s.) LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty. 1875.