Specification of Henry Young Darracott Scott : treating excreta.

  • Scott, H. Y. D.
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Henry Young Darracott Scott : treating excreta. Source: Wellcome Collection.

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    Scott's Improvements in Treating Excreta. dried or scorched sewage deposit, sawdust, town ashes, road scrapings, and other substances of the same class for deodorizing the solids, and I extract the phosphoric acid and nitrogen present in the liquids by means of compounds, such as lime and hydrated phosphate of magnesia, in the manner heroin-after set forth. 5 Por the charcoal I prefer to use charcoal made out of sewage deposit, and for lime I prefer to use that which is prepared from pure limestone, hut it may he sometimes convenient to employ other descriptions of charcoal and lime, and I sometimes also substitute magnesia or dolometic lime for lime. 10 I am aware that charcoal and the other substances mentioned have already been used for deodorizing night soil, and that alkaline earths have been employed for the treatment of such matters and the decom¬ position of nitrogenous substances (as, for instance, by one Gavin Chapman, as described in the Specification of Letters Patent dated 15 twentieth October One thousand eight hundred and sixty-eight, No. 3203) as well as for precipitating liquid sewage, and that hydrated phosphate of magnesia has been proposed as a means for recovering ammonia from urinous and ammoniacal liquids, amongst others by myself, under Letters Patent dated twentieth March One thousand eight hundred 20 and seventy-two, No. 849. I therefore make no claim for the use of any of these substances simply as such, nor do I claim for the use of lime in conjunction with charcoal as purifying and deodorizing agents, unless employed substantially in the special manner or manners herein¬ after described. 25 My present Invention consists essentially of novel combinations in the use of the above-mentioned substances, and of novel modes of applying them to the treatment of night soil and urinous liquids which are received into cesspools and other like receptacles, or after removal therefrom. 30 In carrying out the process in cesspools and other receptacles of night soil, the charcoal or other equivalent deodorant may be applied occa¬ sionally through the fronts of the seats or otherwise, or it may be applied by well known mechanical arrangements which discharge a certain amount of the deodorant after each use of the privy or closet; but such 35 use of deodorant may be dispensed with, and the liquids be separated from the solids by merely straining through a screen. The liquids which