Specification of Henry Young Darracott Scott : treating sewage water.

  • Scott, H. Y. D.
Date:
1874
Catalogue details

Licence: Public Domain Mark

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

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    Scott’s Improvements in Treating Sewage Water. give and grant unto me, the said Henry Young Darracott Scott, Her special licence that I, the said Henry Young Darracott Scott, my executors, administrators, and assigns, or such others as I, the said Henry Young Darracott Scott, my executors, administrators, and 5 assigns, should at any time agree with, and no others, from time to time and at all times thereafter during the term therein expressed, should and lawfully might make, use, exercise, and vend, within the United Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for “ Improvements in the Purification of 10 Sewage Water,” upon the condition (amongst others) that I, the said Henry Young Darracott Scott, my executors or administrators, by an instrument in writing under my, or their, or one of their hands and seals, should particularly describe and ascertain the nature of the said Invention, and in what manner the same was to be performed, and 15 cause the same to be filed in the Great Seal Patent Office within six calendar months next and immediately after the date of the said Letters Patent. NOW KNOW YE, that I, the said Henry Young Darracott Scott, do hereby declare the nature of my said Invention, and in what manner 20 the same is to be performed, to be particularly described and ascertained in and by the following statement (that is to say) This Invention relates particularly to the treatment of sewage which is colored with dyes or other impurities for the purpose of removing the colour therefrom. 25 Purification in other respects, such as deodorization and the removal of nitrogenous matter, will also be effected by the process. In applying my Invention I commence the treatment of the sewage by the ordinary lime method of precipitation, using as a general rule about twenty grains of lime per gallon, but I employ larger quantities * 30 when the coloring matters are very strong. The resulting precipitate is received into a tank, say, No. 1, and the deposited matters may be employed as manure or for the preparation therefrom of agricultural lime or cements by well known methods. The effluent from tank No. 1, which will consist of limed sewage 35 water, is treated or agitated with an impure sulphate or chloride of iron and alumina, which I prepare by digesting prussiate of potash charcoal in dilute sulphuric or hydrochloric acid. The effect of this chemical