IMPROVEMENTS IN THE TREATMENT of Sewage AND OTHER REFUSE ANIMAL MATTER. MATERIA
Year: 1882

page_text: LETTERS PATENT to Thomas Henry Cobley of Kingsbury House Dunstable
in the County of Bedford, for an Invention of IMPROVEMENTS IN THE
TREATMENT of Sewage AND OTHER REFUSE ANIMAL MATTER. THE MATERIALS
PROVISIONAL SPECIFICATION left by the said Thomas Henry Cobley at
the Office of the Cominissioners of Patents on the 22nd July 1882.
THOMAS HENRY COBLEY of Kingsbury House Dunstable in the County of
Bedford "IMPROVEMENTS IN THE TREATMENT OF SEWAGE AND OTHER REFUSE
ANIMAL MATTER, THE MATERIALS EMPLOYED THEREIN AND THE PRODUCTS OBTAINED
THEREFROM"
My Invention relates to the treatment of Sewage and other refuse animal matter
with certain reagents whereby I promote precipitation and purification in an
economical manner and increase the value of the Precipitate as manure.
The reagent which I employ consists of a mixture of soluble chlorides, such as
chlorides of Aluminium, Calcium, Iron and Magnesium in varying proportions or
that mixture absorbed in and combined with carbonaceous matter.
I produce these substances from Shale ashes, Burnt Clay, Cinder or Scoriae from
Blast furnaces and dephosphorizing furnaces by treating these with Hydrochloric
Acid, the Waste Liquor of Copper extraction by the humid process, or by an
available Chloride such as Sodium chloride.
I apply the reagent in the usual manner as a solution adding afterwards milk of
lime in cases where Phosphates are in solution.
The solution of the reagent may be absorbed in Peat Charcoal or other
carbonaceous matter such as Shale Coke.
In cases where the refuse matter is rich in albumen I employ Chlor aluminium
or other soluble salt of Alumina alone or in combination with carbonaceous matter.
The combination of the reagent with carbon may be employed in the form of
paste or powder.
In order to enhance the value of the Precipitate as manure I add to it basic slag
rich in Phosphates previously fused with about one third or one half its weight of
Kainite or double Sulphate of Potash and Magnesia.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Henry Cobley in the Great Seal Patent Office on the
22nd January 1883.
THOMAS HENRY COBLEY of Kingsbury House Dunstable in the County of
Bedford "IMPROVEMENTS IN THE TREATMENT OF SEWAGE AND OTHER REFUSE
ANIMAL MATTER, THE MATERIALS EMPLOYED THEREIN AND THE PRODUCTS OBTAINED
THEREFROM
"
My invention relates to the treatment of sewage and other refuse Animal matter
with certain reagents whereby I promote precipitation and purification in an
economical manner and increase the value of the precipitate as Manure.
The reagents which I employ consist of mixtures of soluble chlorides such as
chloride of aluminium, calcium, iron and magnesium either by themselves or
along with carbonaceous matter. As a source of chloride of magnesium and
calcium, chloridised biphosphate (Basic Slag) may be employed. And Stassfurt
salt from which a portion of the magnesium has been removed by addition of Milk
of lime, also as a source of chloride of iron the waste liquor from the Copper
extracting Works by the humid process may be used. But the substances required
are principally produced from the basic slag cinder and scoriae from blast furnaces
and dephosphorising furnaces from Potter's waste particularly where bone ash has
been employed from Shale ash clay and Bauxite by treating them with hydro-
chloric acid and washing out and decanting the solutions free from silica or other
insoluble matter. In many cases the solutions carry with them a quantity of
soluble and flocculent slica which is of advantage as it assists in causing the
precipitate to aggregate and deposit more readily.
These reagents are applied in solution in proportions and mixtures which may
be varied according to the nature of the sewage or refuse matter to which they are
to be applied. Where there is a considerable quantity of soluble phosphate
present precipitation is completed by addition of a small quantity of Milk of Lime.
Instead of applying the liquid solutions they may be absorbed in carbonaceous
or organic matters such as soot, peat charcoal or powdered peat so as to form a
paste or powder which is mixed with the refuse matters. The pasty mixture or
the precipitate after settling is subjected to the action of a filter press so as to
remove a large portion of the water, and the product. is then ready for use as
manure the value of which may be enhanced by grinding up with it as a dryer a
calcined material consisting of a mixture of Kainite or double sulphate of potash
and magnesia and any phosphatic material such as phosphatic slag or coprolite in
the proportion of one third or one half Kainite to two thirds or one half of the
phosphatic material.
Having thus described the nature of my invention and in what manner the
same is to be performed, I claim :-
First. The herein described process of treating sewage and other refuse animal
matter for the manufacture of manure.
Second. For treatment of sewage and other refuse animal matter the use of
solutions of chlorides prepared and applied substantially as herein described.

page_text: Third. The method of applying the solutions of chlorides in admixture with
carbonaceous matters forming a paste, substantially as described.
Fourth. For enriching the manure the use of Kainite and phosphatic material
substantially as herein described.
In Witness whereof I the said Thomas Henry Cobley have hereunto set my
hand and seal this twentieth day of January in the year of our Lord One
thousand eight hundred and eighty-three.
THOMAS: HENRY: COBLEY (L.S.)