IMPROVEMENTS IN THE TREATMENT OF SEWAGE AND OTHER FECAL MATTERS.
Year: 1871

page_text: LETTERS PATENT to Bevan George Sloper, of Northflect, in the County
of Kent, Chemical Engineer, and Felix Jean Joseph Washer,
of Brussels, in the Kingdom of Belgium, Industrial Engineer,
for the Invention of "IMPROVEMENTS IN THE TREATMENT OF SEWAGE AND
OTHER FECAL MATTERS.
"
Sealed the 21st April 1871, and dated the 8th February 1871.
PROVISIONAL SPECIFICATION left by the said Bevan George Sloper
and Felix Jean Joseph Washer at the Office of the Commissioners
of Patents, with their Petition, on the 8th February 1871.
We, BEVAN GEORGE SLOPER, of Northfleet, in the County of Kent,
Chemical Engineer, and FELIX JEAN JOSEPH WASHER, of Brussels, in
the Kingdom of Belgium, Industrial Engineer, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN THE TREATMENT OF
SEWAGE AND OTHER FECAL MATTERS," to be as follows:-
We mix with the sewage or other fecal matters under treatment a
sufficient quantity of an alkali or alkaline earth to decompose the

page_text: nitrogenous substances contained therein and effect their conversion
into ammonia and into a carbonate of the alkali or alkaline earth used.
Our Invention, therefore, consists in the method of converting nitro-
genous substances contained in sewage or other fecal matters into
ammonia, without fermentation at the temperature of the atmosphere.
After this conversion we mix with the sewage or other fecal matters
solutions of a soluble salt of magnesia and of a soluble phosphate in or in
about the following proportions:-For each equivalent of ammonia
contained in the liquid matters treated we use two equivalents of the
magnesian salt and one equivalent of the soluble phosphate. We
agitate the liquids well on mixing and obtain the precipitation of the
ammoniacal phosphate of magnesia.
When necessary for further clarification and deodorization, we use
small quantities of lime with sulphate of alumina or chloride of lime
or proto-sulphate of iron, according to circumstances.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Bevan George Sloper and Felix Jean Joseph
Washer in the Great Scal Patent Office on the 5th August 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, BEVAN
GEORGE SLOPER, of Northfleet, in the County of Kent, Chemical En-
gineer, and FELIX JEAN JOSEPH WASHER, of Brussels, in the Kingdom
of Belgium, Industrial Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of February, in the year of
our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Bevan George Sloper and Felix Jean Joseph
Washer, Her special licence, that we, the said Bevan George Sloper
and Felix Jean Joseph Washer, our executors, administrators, and
assigns, or such others as we, the said Bevan George Sloper and Felix
Jean Joseph Washer, our executors, administrators, and 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 lawfuly

page_text: 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 TREATMENT OF SEWAGE AND OTHER
FECAL MATTERS," upon the condition (amongst others) that we, the said
Bevan George Sloper and Felix Jean Joseph Washer, our executors or
administrators, by an instrument in writing under our, or one of our 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 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 we, the said Bevan George Sloper and Felix
Jean Joseph Washer, do hereby declare the nature of our said Inven-
tion, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement thereof, that
is to say:
We mix with the sewage or other fecal matters under treatment a
sufficient quantity of an alkali or alkaline earth to decompose the nitro-
genous substances contained therein and effect their conversion into
ammonia and into a carbonate of the alkali or alkaline earth used.
Our Invention, therefore, consists in the method of converting nitro-
genous substances contained in sewage or other fecal matters into
ammonia, without fermentation at the temperature of the atmosphere.
After this conversion we mix with the sewage or other fecal matters
solutions of a soluble salt of magnesia and of a soluble phosphate in
or in about the following proportions:-For each equivalent of ammonia
contained in the liquid matters treated we use two equivalents of the
magnesian salt and one equivalent of the soluble phosphate. We
agitate the liquids well on mixing and obtain the precipitation of the
ammoniacal phosphate of magnesia.
When necessary for further clarification and deodorization, we use
small quantities of lime with sulphate of alumina or chloride of lime
or protosulphate of iron, according to circumstances.
By means of our Invention we are enabled to remove from sewage
all the solid impurities and also a very large proportion of the soluble

page_text: polluting matter it contains, and to obtain a precipitate which is a
manure of very great value.
In witness whereof, I, the said Bevan George Sloper, on behalf of
myself and the said Felix Jean Joseph Washer, have hereunto
set my hand and seal, this Third day of August One thousand
eight hundred and seventy-one.