Improvements in the Purification of Sewage and other Liquids.
Year: 1896

page_text: Date of Application, 23rd May, 1896
Complete Specification Left, 18th Feb., 1897-Accepted, 3rd Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Purification of Sewage and other Liquids.
We, EDWARD WILLIAM TAYLOR JONES, F.I.C., of 10 Victoria Street,
Wolverhampton in the County of Stafford, Analytical Chemist, and JOSEPH
GARFIELD, of 163 Penn Road, Wolverhampton, aforesaid, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention has for its object the treatment of sewage and other liquids by
filtration, for the elimination more especially of organic matter therefrom.
According to this invention, a filtering medium is employed for the above purpose
which consists wholly or in part of broken coal or bituminous shale, or of broken
coal and bituminous shale. There may be mixed with the coal or shale, or both,
other filtering material, such as sand or gravel, to make up with the coal or shale,
or both, the required filter bed.
The coal and shale are broken into the most suitable size to suit the character
of the liquid to be treated.
In the case of sewage or other liquid carrying a considerable proportion of
matter in suspension, it is of course preferable to clear the liquid by subsidence or
precipitation prior to passing it through the filtering medium.
Dated this 22nd day of May 1896
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Purification of Sewage and other Liquids.
We, EDWARD WILLIAM TAYLOR JONES, F.I.C., of 10 Victoria Street,
Wolverhampton in the County of Stafford, Analytical Chemist, and JOSEPH
GARFIELD, of 163 Penn Road, Wolverhampton, aforesaid, Engineer, 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 :-
This invention has for its object improvements in the treatment of sewage and
other liquids by filtration, for the elimination more especially of organic matter
therefrom.
According to this invention, a filtering medium is employed for the above
purpose which consists wholly or in part of broken coal or bituminous shale, or of
broken coal and bituminous shale. There may be mixed with the coal or shale, or
both, other filtering material, such as sand or gravel, to make up with the coal or
shale, or both, the required filter bed.
In the case of sewage or other liquid carrying a considerable proportion of
matter in suspension, it is of course preferable to clear the liquid by subsidence or
precipitation prior to passing it through the filtering medium.

page_text: It is preferred to use only coal in the formation of the filter bed; and, if the fall
will allow thereof, the bed should be about six feet thick. In composing a filter
bed of such depth, the bottom layer is, preferably, made about six inches thick of
coal broken into pieces roughly about half an inch cube, the fine coal produced in
the breaking being screened off; upon this is put a layer about twelve inches
thick of coal broken into pieces which are roughly about the size of one eighth of
an inch cube, the fine material being also in this case screened off'; then a layer
of about two feet six inches in thickness is put on of coal broken into pieces roughly
of the size of one sixteenth of an inch cube, and in this case also the fine coal is
screened off; and finally a layer of about two feet thick is put on, consisting of
slack which will pass through a three sixteenths of an inch mesh, but in this case
the fine is not screened off.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
Treating sewage or other liquid, for the elimination more especially of organic
matter therefrom, by filtration through a filtering medium (or filter bed) which
consists wholly or in part of broken coal or bituminious shale, or of broken coal
and bituminious shale, substantially as described.
Dated this 17th day of February 1897
STEPHEN
WATKINS,
Wolverhampton, Agent for the Applicants.