Improvements in and relating to the Treatment of Sewage and Sewage Deposits.
Year: 1891

page_text: Date of Application, 23rd Jan., 1891
Complete Specification Left, 23rd Oct., 1891-Accepted, 28th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Treatment of Sewage and
Sewage Deposits.
I, HENRY TATHAM of The Sewage Works, Burnley, in the County of
Lancaster, Manager of Works, do hereby declare the nature of this invention to be
as follows:-
This invention relates to the treatment of sewage and manufacture of manure.
The sewage is received into subsidence tanks, where it may then be treated with
lime, or other suitable agents for precipitation. The effluent may be discharged
into any ordinary stream or water-course; whilst the sludge may be drawn by a
pump into an elevated tank, from whence it flows into a receiver or receivers, and
discharged therefrom by means of a pump or compressed air into a filtering
apparatus, which may consist of a series of filtering cloths with grated or perforated
partitions, between which the solid particles of the sludge are retained and pressed
into sheets or cakes; the effluent passing off from the filtering cloths into side-
troughs, leaving the "pressings between the filter cloths and the grated
<
partitions.
22
The partitions are now moved laterally so as to allow the "pressings" to fall
from between the filter cloths into a shoot or other conveyer, which conveys the
pressings "in cake-form to a machine for disintegration consisting preferably of a
pair of spiked rollers mounted within a hopper, one roller revolving at an accelerated
speed to that of the other; or, a series of revolving or reciprocating knives may
be substituted for the spiked rollers, by which means the solidified sludge is
separated and ready for carting away for distribution as manure upon the land.
Dated this 21st day of January 1891.
THOS. RICHMOND,
A gent.
COMPLETE SPECIFICATION.
Improvements in and relating to the Treatment of Sewage and
Sewage Deposits.
1, HENRY. TATHAM of The Sewage Works, Burnley, in the County of
Lancaster, Manager of Works, 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 relates to the treatment of sewage and manufacture of manure.
The sewage is received into subsidence tanks where it may then be treated with
lime or other suitable agents for precipitation. The effluent may be discharged
into an ordinary stream or water-course; whilst the sludge is drawn by a pump into
an elevated tank, from whence it flows into a receiver or receivers, and discharged
therefrom by means of a pump or compressed air into a filtering apparatus, which
consists of a series of filtering cloths with grated or perforated partitions between
which the solid particles of the sludge are retained and pressed into sheets or cakes;
the effluent passing off from the filtering cloths into side troughs, leaving the
"pressings "between the filter cloths and the grated partitions.
to fall
These partitions are now moved laterally, so as to allow the "pressings
between the filter cloth into a shoot or other conveyor, which conveys the pressings
to a machine for disintegration. I would here observe that the mode of treating
sewage in tanks and the manner of filtering between the filter cloths are not new or
CD 37

page_text: novel when used independently of the disintegrator.
32
I therefore disclaim the
separate use of the filter cloths and grating and confine myself entirely to the mode
or method of separation or disintegration of the pressings which fall from the
filter cloths. For this purpose I employ the machine represented on 'the accom-
panying drawings.
Fig. 1 is an end elevation of a disintegrating machine 'constructed in accordance
with my invention, and
Fig. 2 an elevation in section of the separating rollers, and box in which they are
located.
A is the framework of the machine; B the hopper into which the pressings fall
or are thrown in for disintegration between the rollers C and D which revolve in
opposite directions to each other, the former of which is spiked and the latter has
preferably a plain surface, against which the spiked roller acts during the process
of disintegration. The spiked roller is made to revolve at an accelerated speed to
that of the other to expedite the process, as represented in Fig. 1.
The quality of this intercepted sewage matter as a fertilizing agent is beyond
dispute of a high order but owing to such matter being compressed into semi-solid
blocks or cakes, which are difficult to separate; so much so, that with all the good
qualities the pressings possess as a fertilizing agent, the time and trouble bestowed
in the separation of such matter by hand render it of very little use. Whereas, by
the aid of the disintegrator, the pressings or semi-solid blocks or cakes are reduced
to fine particles with rapidity and at a very little cost.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The manufacture and use of a machine for the disintegration of semi-solid cakes
of sewage matter from between the filter cloth, substantially as and for the purpose
described.
Dated this 22nd day of October 1891.
THOS. RICHMOND,
Agent.