Treatment of such Matters.
Year: 1885

page_text: Treatment of such Matters.
We JOHN WILLIAM SLATER of N° 36 Wray Crescent Holloway in the County of
Middlesex Analytical Chemist and the NATIVE GUANO COMPANY LIMITED Of
No 29 New Bridge Street in the City of London Manufacturers of Manure do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
PREPARATION OF AGENTS TO BE USED IN THE TREATMENT OF SEWAGE AND OTHER
LIQUID OR SEMI LIQUID PUTRESCENT OR PUTRESCIBLE MATTERS AND IMPROVEMENTS
IN THE TREATMENT OF SUCH MATTERS: to be as follows:-
"
We take the slag from copper smelting furnaces and reduce it to powder and
dissolve it in muriatic acid. This solution which we will hereinafter call
"solution A" we mix with a solution of iron slag prepared as described in the
specification of Letters Patent No 12830 dated the 26th day of September
A.D. 1884 and granted to John William Slater (one of the present applicants)
which solution is referred to in the said specification as mixture N° 2. The
proportions in which we add the solution A to the said mixture N° 2 are from one
to ten parts by weight of the former to one hundred parts by weight of the latter.
We do not however limit ourselves to these proportions. The mixture of the
solutions of copper slag and iron slag thus prepared we will hereinafter refer to as
mixture A².
Or instead of preparing the said mixture A² by adding a solution of copper slag
to a solution of iron slag we take copper slag and iron slag in the required
proportions and add the required quantity of muriatic acid thereto and thus
produce a mixed solution.
89
The muriatic acid which we prefer to use is the crude acid known in commerce
Tower salts."
In treating sewage according to our invention with the agents prepared as
herein before described we first run into the sewage a quantity of a mixture of
ground peat and clay prepared as described in the specification herein before
referred to and termed in the said specification mixture N° 1 and when the said
[Price Bd

page_text: mixture has been incorporated with the sewage we add thereto a quantity of the
mixture A* previously diluted with water.
In preparing the mixture N° 1 we in some cases use in place of ground peat
either charcoal prepared as described in the specification of Letters Patent
No 1893 dated the 5th day of May 1876 granted jointly to Christopher Rawson
and the aforesaid John William Slater or we use saw dust or spent dye woods
prepared as described in the aforesaid specification N° 12830 dated the 26th day
of September A.D. 1884 or we use lignite (otherwise known as "Bovey coal" and
"Brown coal ") or peat charcoal or burnt Kimmeridge shale or any other cheap
form of carbon having deodorizing power or decolourizing power or both and in
some cases we use earth in place of clay in preparing the said mixture.
In place of the mixture N° 1 we in some cases use clay and carbon prepared by
treatment with any cheap form of sulphate or muriate of manganese or with
-sulphate or muriate of copper.
In place of the mixture N° 2 we in some cases use a solution of Gibbsite
prepared as described in the specification of Letters Patent N° 15810 dated
the 1st day of December 1884 granted jointly to the aforesaid John William Slater
and William Stevens. Or we use a solution of lava or of Farnham Rock prepared
as described in the aforesaid specification N° 1893 dated the 5th day of May
A.D. 1876. Or we use any hydrated chloride of aluminium prepared either from
minerals or manufacturing residues whether soluble or gelatinous silica be present
or not. Or we use any mixture of such solutions and chlorides. Or we use any
chloride of manganese.
In all cases we avoid using slag or other matters containing an appreciable
amount of phosphoric acid or carbonate of lime or carbonate of magnesia or caustic
lime or magnesia or a sulphate of lime.
The mixture A must under ordinary circumstances be very slightly acid. If the
sewage be strongly alkaline sufficient muriatic acid must be added to the said
mixture A³ to render the effluent either neutral or faintly acid.
If the sewage to be treated be acid it must be neutralized either before or after
the addition of the other chemicals.
We prefer to add the mixture of clay and peat or carbon (mixture N° 1) first to
the sewage and afterwards to add the mixture A but in cases where it is
impracticable or undesirable thus to add the mixtures to the sewage we add the
two mixtures thereto simultaneously.
In cases where a high degree of purity is not required in the effluent the
solution A or any solution of slag in muriatic acid may be used alone the previous
or simultaneous addition of the mixture N° 1 being in such cases unnecessary.
The mixtures and process herein before described are applicable to the treatment
of putrescent or putrescible liquid or semi liquid matters other than sewage.
Dated this eleventh day of November 1885.

page_text: Treatment of Sewage and other Liquid or Semi Liquid
Putrescent or Putrescible Matters, and Improvements in the
Treatment of such Matters.
We JOHN WILLIAM SLATER of N° 36 Wray Crescent Holloway in the County of
Middlesex Analytical Chemist and the NATIVE GUANO COMPANY LIMITED of
N° 29 New Bridge Street in the City of London Manufacturers of Manure do
hereby declare the nature of this Invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
We take the slag from copper smelting furnaces and reduce it to powder and
dissolve it in muriatic acid. This solution which we will hereinafter call.
*solution A" we mix with a solution of iron slag prepared as described in the
specification of Letters Patent No 12830 dated the 26th day of September
A.D. 1884 and granted to John William Slater (one of the present applicants)
which solution is referred to in the said specification as mixture No 2. The
proportions in which we add the solution A to the said mixture No 2 are from one
to ten parts by weight of the former to one hundred parts by weight of the latter.
We do not however limit ourselves to these proportions. The mixture of the
Bolutions of copper slag and iron slag thus prepared we will hereinafter refer to as
mixture A².
Or instead of preparing the said mixture A³ by adding a solution of copper slag
to a solution of iron slag we take copper slag and iron slag in the required
proportions and dissolve the whole in muriatic acid and thus produce a mixed
solution.
The muriatic acid which we prefer to use is the crude acid known in commerce
as "Tower salts."
:
In treating sewage according to our invention with the agents prepared as
herein before described we first run into the sewage a quantity of a mixture of
ground peat and clay prepared as described in the specification herein before
referred to and termed in the said specification. mixture N° 1 and when the said
mixture has been incorporated with the sewage or the matters to be treated we
add thereto a quantity of the mixture A³ previously diluted with water to such an
extent as to cause it to flow freely and mix readily with the matters to be treated.
The relative proportions in which we prefer to use the said mixtures are about
four parts by bulk of the mixture N° 1 to one part by bulk of the diluted
mixture A. We however do not limit ourselves to the use of any definite
proportions of the said mixtures. The proportion in which the mixture N° 1
should be used relatively to the quantity of sewage or other matter to be treated
is stated approximately in the specification herein before referred to.
In preparing the mixture No 1 we in some cases use in place of ground peat
either charcoal prepared as described in the specification of Letters Patent
No 1893 dated the 5th day of May 1876 granted jointly to Christopher Rawson
and the aforesaid John William Slater or we use saw dust or spent dye woods
prepared as described in the aforesaid specification N° 12830 dated the 26th day of
September A.D. 1884 or we use lignite (otherwise known as "Bovey Coal "and

page_text: "Brown Coal") or peat charcoal or burnt Kimmeridge shale or any cheap form of
carbon having deodorizing power or decolourizing power or both and in some
cases we use earth (i,e arable soil) in place of clay in preparing the said mixture.
In place of the mixture N° 1 we in some cases use clay and carbon prepared by
moistening or sprinkling them with or steeping them in any cheap form of sulphate
or muriate of manganese such as the waste muriate of manganese from chlorine
stills or with sulphate or muriate of copper in a fluid state such as the sulphate of
copper contaminated with sulphate of iron which is produced in the treatment
of low class copper ores-by lixiviation after roasting and in some other metallurgical
processes.
In place of the mixture N° 2 we in some cases use a solution of Gibbsite
prepared as described in the specification of Letters Patent N° 15810 dated the
first day of December 1884 granted jointly to the aforesaid John William Slater
and William Stevens. Or we use a solution of lava or of Farnham Rock prepared
as described in the aforesaid specification N° 1893 dated the fifth day of May
A.D. 1876. Or we use any other hydrated chloride of aluminium prepared either
from minerals or from manufacturing residues whether soluble or gelatinous silica
be present or not. Or we use any mixture of such solutions and chlorides. Or we
use any chloride of manganese.
In preparing the solutions hereinbefore described or referred to we in all cases
avoid using slag or other matters containing an appreciable amount of phosphoric
acid or carbonate of lime or carbonate of magnesia or caustic lime or magnesia or
Bulphate of lime.
•
The mixture A must under ordinary circumstances be very slightly acid. If
the sewage or other matter to be treated be strongly alkaline sufficient muriatic
acid must be added to the said mixture to render the effluent either neutral or
faintly acid.
If the sewage to be treated be acid it must be neutralized either before or after
the addition of the other chemicals.
We prefer to add the mixture of clay and peat or carbon (mixture N° 1) first to
the sewage and afterwards to add the mixture A' but in cases where it is
impracticable or undesirable thus to add the mixtures to the sewage we add the
two mixtures thereto simultaneously.
In cases where a high degree of purity is not required in the effluent the
solution A³ or any solution of slag in muriatic acid may be used alone the previous
or simultaneous addition of the mixture No 1 being in such cases unnecessary.
The mixtures and process herein before described are applicable to the treatment
of putrescent or putrescible liquid or semi liquid matters other than sewage.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be or may be performed we declare
that what we claim is:-
The treatment of sewage and other putrescent or putrescible liquid or semi
liquid matters by the addition thereto of a muriatic solution of copper slag in
conjunction with a solution of iron slag or of hydrated chloride of aluminium or of
chloride of manganese substantially as hereinbefore described whether or not a
mixture of clay or earth and carbonaceous matter be also added to the matters
under treatment.