Specification of Bevan George Sloper : treating sewage.

  • Sloper, Bevan George.
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Bevan George Sloper : treating sewage. Source: Wellcome Collection.

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    Sloper's Improvements in the Treatment of Sewage, 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 Treat- 5 MENT OF Sewage,” upon the condition (amongst others) that I, the said Bevan George Sloper, my executors or administrators, by an instrument in uniting 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 he performed, and cause the same to 10 he 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 Bevan George Sloper, do hereby declare the nature of my said Invention, and in what manner the same is to he performed, to he particularly described and ascertained in and 15 by the following statement thereof, that is to say:— My Invention relates, first, to favoring the fermentation of the . sewage under treatment for the purpose of rapidly converting the nitrogenous matters contained therein into carbonate of ammonia; and, secondly, to the employment of soluble salts of magnesia, soluble 20 alkaline phosphates, and the soluble phosphates of lime, for the purpose of forming an ammoniacal phosphate of magnesia and precipitating it charged with various animal matters contained in the sewage. In order to favor the fermentation of the sewage which I operate upon I mix it with about an equal quantity of sewage which has 25 already fermented, and which contains an accumulated quantity of the ferment produced by the fermentation of the urine in the sewage. I keep the mixed sewage agitated for a sufficient time (say half an hour, more or less), until the nitrogenous matters capable of being aeted upon by the ferment are converted into carbonate of ammonia. I then 30 allow the sewage to rest, and when the sediment it contains has subsided to about one-half the depth of the reservoir I draw off the supernatant liquid into another reservoir. I then mix with this ammoniacal sewage a solution or solutions . containing a soluble salt of magnesia and a soluble phosphate of soda or 35 potash or a soluble phosphate of lime. I allow or use two chemical equivalents of a magnesian salt to each one equivalent which the sewage contains of carbonate of ammonia. The quantity of ammonia in the sewage I ascertain by previous analysis. I allow or use one chemical