Improvements in the Treatment of Sewage Sludge.
Year: 1892

page_text: Date of Application, 23rd May, 1892
Complete Specification Left, 21st Feb., 1893-Accepted, 20th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in the Treatment of Sewage Sludge.
I, JAMES BINGHAM ALLIOTT of Bloomsgrove Iron Works, Nottingham,
Engineer, do hereby declare the nature of this invention to be as follows:-
According to this invention sewage sludge is treated as follows:-By means of
filter presses the greater part of the water is separated from the sludge which is
thus likewise formed into cakes. These cakes are by means of suitable apparatus
such as mills or disintegrators broken up and separated into small pieces which are
subsequently mixed with other towns' refuse.
In some cases this other towns' refuse is likewise treated in the mills, dis-
integrators, or other similar apparatus along with the cakes of sewage sludge, thus
mixing the whole intimately together and rendering it easier to burn the sewage
sludge in a furnace, and to obtain a good heat from the combustion.
Dated this 24th day of May 1892.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Treatment of Sewage Sludge.
I, JAMES BINGHAM ALLIOTT, of Bloomsgrove Iron Works, Nottingham,
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 :-
According to this invention sewage sludge is treated as follows:-By means of
a filter press the greater part of the water is separated from the sludge which is
thus likewise formed into cakes. These cakes are by means of suitable apparatus
such as a grinding mill or disintegrator, broken up and separated into small pieces
which are subsequently mixed with a suitable quantity of other town's refuse say
in the proportion of one part by weight of sewage cake to two to three parts by
weight of other town's refuse, and burnt in a suitable furnace, such as a destructor
furnace adapted to burn town's refuse. By this means the sewage cakes, which are
incombustible by themselves can be readily burnt.
In some cases the other town's refuse referred to, is likewise treated in the
grinding mill, disintegrator, or other similar apparatus along with the cakes of
sewage sludge, thus mixing the whole intimately together and rendering it easier to
burn the sewage sludge in a furnace of the kind referred to and to obtain a good
heat from the combustion.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The herein described treatment of sewage sludge which consists in removing the
greater portion of the water from the sludge and forming the solid portions thereof
into cakes by means of filter presses breaking up these cakes into small pieces by
suitable means such as a grinding mill or disintegrator, and burning the same in
admixture with other town's refuse in a furnace such as a destructor furnace, adapted

page_text: to burn town refuse, whether the cakes of sewage sludge be disintegrated alone or
with the other town's refuse with which they are to be burnt, as set forth.
Dated this 21st day of February 1893.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.