Improvements in or relating to the Treatment of Sewerage and other Contaminated Liquids.
Year: 1891

page_text: Date of Application, 22nd Aug., 1891
Complete Specification Left, 21st May, 1892-Accepted, 25th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Treatment of Sewerage and
other Contaminated Liquids.
I, WILLIAM DUNDAS SCOTT-MONCRIEFF, of 86 Newman Street, Oxford
Street, London W. Engineer, do hereby declare the nature of this invention to
be as follows:-
This invention has relation to certain improvements in the methods employed for
the filtration & purification of sewerage and other contaminated liquids and has for
I
its object the carrying out of this process in an improved and simple manner.
pass the sewerage, for this purpose, into a vertical pipe communicating by means
of a bend with an elongated tank or vessel water-tight in all directions except the
top. I divide this tank or vessel horizontally into two sections, the lower section,
which communicates with the vertical pipe and bend, being covered by a grating
and the upper section filled with any suitable filtering material. At a suitable
level an overflow pipe is fixed which allows the clarified liquid to pass away after
it has risen through the filtering material, and in order to remove the sludge or
deposit which is retained in the tank beneath the grating, I provide a draw-off pipe
on the level of the bottom of the tank or vessel fitted with a suitable valve or plug
by which the sludge may be removed when it is found convenient or necessary to
do so.
1001
COMPLETE SPECIFICATION.
Improvements in or relating to the Treatment of Sewerage and
other Contaminated Liquids.
I, WILLIAM DUNDAS SCOTT-MONCRIEFF of 86 Newman Street, Oxford
Street, London W. Engineer do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention has for its object the purification of sewerage and other con-
To this end I arrange a
taminated liquids in an improved and simple manner.
chamber of suitable dimensions for dealing with any required quantity of con-
taminated fluid as set forth in my Provisional Specification, the said chamber being
provided with a vertical pipe communicating with the lower part of the structure
over which there is fixed a grating upon which there is placed the filtering material
of any suitable description, with provision for removing the deposit or sludge by
means of a valve or penstock, and one or more overflow pipes or channels for the
escape of the clarified effluent all us set forth and illustrated in the accompanying
drawings.
Figures I. II. III. show a longitudinal, sectional elevation, a plan, and a cross
sectional elevation respectively of the chamber.
1. 1. shews a section and plan of the vertical pipe which conveys the sewerage or
the contaminated liquid from the drain or pipe 2. 2. beneath the grating 3. 3. 3. in
such a manner that it must flow up through the grating and through the filtering
material 4. 4. 4. until it rises in a clarified state to the level of the overflows 5. 5. 5.
where it escapes in any required direction.
In order to provide a convenient means of removing the sludge or deposit from
beneath the grating 3. 3. 3. I fix the valve or penstock 6. 6. 6. which can be

page_text: opened or closed as required. In certain cases it may be convenient to provide a
catch-pit or straining apparatus before passing the sewerage or other contaminated
liquid into the vertical pipe 1. 1. and in some cases it may be convenient to repeat
the filtering process by passing the effluent through a second filter.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that
what I claim
The arrangement of a filtering apparatus practically as described and
illustrated.
Dated this 21st day of May 1805
W. D. SCOTT-MONCRIEFF.