Improvements in the Production of Compositions for Treating Sewage Matters or other Foul Waters.
Year: 1895

page_text: Date of Application, 29th Oct., 1895
Complete Specification Left, 29th July, 1896-Accepted, 17th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in the Production of Compositions for Treating
Sewage Matters or other Foul Waters.
We GEORGE COOKE KINLOCH of 42 William Street Heywood Analytical
Chemist CHARLES HEAP of Caldershaw Mills Spotland Rochdale Dyer and
Fulling Miller all in the County of Lancaster do hereby declare the nature of this
invention to be as follows:-
.
Our invention relates to a composition or compound to be used for the
precipitation of sewage or other foul waters.
The principal characteristic of our invention is the admixture or combining
together of two or more ingredients mixed with cold water whereby we are
enabled to produce a precipitant for sewage purposes ready for immediate use and
without the necessity of employing a costly process of manufacture as now in the
production of precipitants for this purpose.
Our main object is the production of an economical and inexpensive sewage
precipitating compound which contains the essential elements necessary for the
purpose herein specified.
According to our invention we combine together in suitable proportions as may
be required for the particular sewage to be treated nitre cake and shale or clay or
any other suitable substance containing alumina and iron which we grind together
then mix the same with cold water or with cold water and sulphuric acid combined
and thus obtain a paste or plastic substance which we afterwards form or mold
into blocks or cakes which are then allowed to set and become hard and capable
of being handled for transport purposes.
During the setting or hardening process we find that a chemical reaction
sufficiently energetic takes place which produces compounds of alumina and
compounds of iron containing more or less of these compounds according to the
qualities of materials used and of sufficient strength to enable or ensure precipi-
tation of sewage matters.
By virtue of the important feature of placing the ingredients together or by
mechanical mixture in contra distinction to a chemical process in which the appli-
cation of heat is employed we are enabled to add to or further mix with the
ingredients so combined any other ingredients such as carbolic acid, creosote, or
oiber substances having the like properties and which we may deem necessary
for purification purposes or the prevention of secondary decomposition in the
sewage treated.
The advantage we claim by the mixture of the ingredients by the cold process
is that any other ingredients which may be added such as carbolic acid is not
driven off in a volatile form, as would be the case were the application of heat
required which we find is not necessary in the production of our precipitant thus
we are enabled to produce an inexpensive precipitant and to utilise to the full
extent the beneficial qualities of the carbolic acid for disinfecting and purification
purposes.
It will be obvious that the proportions of the nitre cake, shale, or carbolic acid
will be var ed more or less accordingly as may be required in some cases more
alumina or iron, in other cases more of the nitre cake will predominate.
Dated this 28th day of October 1895.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:
1. The method or process of manufacture of a precipitant for the purification
and precipitation of sewage or other foul waters wherein ingredients such as nitre
cake and shale or its homologue are mixed together in the cold state without the
application of heat as herein set forth.
2. A composition or compound for the purification of sewage or other foul
waters formed by the combination of nitre cake with shale, clay or other suitable
material containing alumina and iron and produced substantially as and for the
purposes herein set forth.
Dated this 21st day of July 1896.
GEORGE COOKE KINLOCH.
CHAS. HEAP.
J. H. Butterworth,
Rochdale, for the Applicants.