Improvements in or relating to the Treatment of Sewage.
Year: 1892

page_text: Date of Application, 26th Oct.. 1892
Complete Specification Left. 24th July. 1893-Accepted, 26th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Treatment of Sewage.
WILLIAM DUNDAS SCOTT-MONCRIEFF of 14 Victoria Street Westminster S. W.
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has relation to certain improvements in or relating to the
treatment of sewage and has more especially for its object the purification of the
effluent which I obtain from Cultivation Filter Beds" a name which I have
given to filters which depend for their working chiefly upon the action of micro-
organisms.
With the object of purifying the effluent referred to pass it through a simple
and novel form of filter with the special purpose of exposing the filtering material
to the action of the atmosphere. To this end 1 pass the effluent downward through
verticle chambers of a great height pumping it up and into these chambers which
in some cases may he as much as 100 feet in height and of a capacity corresponding
to the amount of sewage to be dealt with and I use an open and preferably a
porous material such as coke so as to obtain the greatest amount of aeration
possible.
In cases where there is available space and the conditions for obtaining a suitable
fall pass the effluent through pipes which are never allowed to run full but
being loosely filled with filtering material allow aeration to take place throughout
their entire length and by another arrangement possessing several advantages I
fill with coke or other
pass the effluent through open carriers or channels which
loose suitable material.
D
1000
COMPLETE SPECIFICATION.
Improvements in or relating to the Treatment of Sewage.
I WILLIAM DUNDAS SCOTT-MONCRIEFF, of 14 Victoria Street, Westminster,
London, S.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, ascertained
in and by the following statement :-
This invention has relation to certain improvements in or relating to the
treatment of sewage and has more especially for its object the purification of the
effluent which I obtain in "Cultivation Filter Beds," a name which I have given
to filters, which depend for their working chiefly upon the action of micro-
organisms.
With the object of purifying the effluent referred to, 1 pass it through a simple
& novel form of filter, for the purpose of exposing the filtering material as much as
possible to the action of the atmosphere. To this end I pass the effluent downwards
through vertical chambers of a great height, pumping it up & into these chambers,
which in some cases may be as much as oue hundred feet in height and of a
capacity corresponding to the amount of sewage to be dealt with, and I use an open
and preferably pourous material such as coke, so as to obtain the greatest amount
of aeration possible.
In cases where there is available space and the conditions for obtaining a suitable
fall, I pass the effluent through pipes, which are never allowed to run full, but
being loosely filled with filtering material allow aeration to take place throughout
their entire length. By another arrangement possessing several advantages I pass

page_text: the effluent through open carriers or channels, which I fill with coke, gravel or
other suitable material. I also provide for passing the effluent through wide
shallow channels.
The arrangement of the tower referred to does not require any special illustration
as it may be of any sectional area or form and only requires to be built strong
enough for the purpose named.
The pipes mentioned as being partially filled with filtering material do not
require special illustration as the description given is sufficient for the guidance of
any competent workman.
Sheet No. 1 represents "Cultivation Filter Beds in duplicate, with open
channels containing filtering material, Fig. I being a plan, Fig. II a longitudenal
section & Fig. III a cross section of the arrangement referred to.
NNN are
the overflow pipes from the Cultivation Filter Beds," discharging into the
channels m. m. m., N¹ being the outflow, arranged in such a way that the effluent
has to pass through the whole length of the channels before finally escaping.
Sheet No. 2. represents an arrangement of "Cultivation Filter Beds with the
wide shallow channels referred to, Fig. 4 being a plan, Fig. 5 a longitudinal section
of the complete arrangement, Fig. 6 a cross section of the filter beds and Fig. 7 a
cross section of the channels. N N N are the overflows, from the "Cultivation
Filter Beds," discharging into the shallow channels A¹ A¹ with outlet pipes N1 N1
and baffler plates T T T for the distribution of the effluent over as wide a surface
as possible through the filtering material m. m.
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:
An improved arrangement for the treatment of sewage by combining a supple-
mentary filtering apparatus for treating the effluent coming from "Cultivation
Filter Beds substantially as described and illustrated.
25
Dated this Twenty-second day of July 1893
W. D. SCOTT-MONCRIEFF.