Improved Process for Purifying Sewage Effluents and other Impure Liquids, and Apparatus therefor.
Year: 1891

page_text: Date of Application, 25th Mar., 1891
Complete Specification Left, 6th Nov., 1891-Accepted, 12th Dec., 1891
PROVISIONAL SPECIFICATION.
Improved Process for Purifying Sewage Effluents and other Impure
Liquids, and Apparatus therefor.
I ERNEST EDGAR SCRUBY of High Street, Epping in the County of Essex,
Grocer do hereby declare the nature of this invention to be as follows:-
-
My invention relates to a certain improved process or method of purifying
sewage effluents and other chemically impure liquids and rendering same inoffensive
and includes also apparatus for the purpose.
I first remove all solid matters as far as possible by the usual processes of settling,
filtering or otherwise. Then according to my process I oxygenate or impregnate
to any required degree with oxygen the liquid before allowing it to flow to its
destination, and this I may effect in any suitable manner. The oxygen to be
combined may be generated or produced in any suitable and convenient manner.
An apparatus I have designed to accomplish the oxygenation consists of a
receiver in connection with the oxygen supply. It may be strongly charged with
oxygen before the introduction of the liquid. In order to facilitate the oxygenation
I break up or reduce to spray the inflowing liquid by causing it to fall upon a coned,
spherical, or other suitably formed device, with or without roughs, grooves, ribs or
the like on its receiving surface, and fixed about the top of the receiver below the
liquid inlet and above or about the oxygen supply.
I may in some cases apply by a fan, blower or otherwise a forced current of
oxygen in a contrary direction to the flow or fall of the liquid so as to more
thoroughly impregnate the same.
The oxygenated liquid escapes from the receiver through a pipe or pipes provided
with syphon traps or other devices for preventing the escape of oxygen from the
receiver.
I may arrange any required number of such apparatus side by side and all
provisions are made for inspection cleaning guaging and so forth.
Dated this 25th day of March 1891.
J. C. CHAPMAN,
Agent.
COMPLETE SPECIFICATION.
Improved Process for Purifying Sewage Effluents and other Impure
Liquids, and Apparatus therefor.
I ERNEST EDGAR SCRUBY of High Street, Epping in the County of Essex,
Grocer, do hereby declare the nature of this invention and the manner in which
the same is to be performed to be particularly described and ascertained in and
by the following statement:-
This invention relates to a certain improved process or method of purifying
sewage effluents and other impure liquids and has for its object to render same
inoffensive; the invention includes also apparatus for the purpose.
In carrying my invention into effect I first remove all solid matters so far as
possible by the usual processes of settling, filtering or otherwise, and then I oxygenate
or thoroughly impregnate with free oxygen the liquid before allowing it to flow
to its destination. The oxygen for the purpose may be generated or produced in
any known manner.
The apparatus I employ consists essentially of a gas tight receiver into the upper
part of which the impure liquid is conveyed and then atomised or broken up into

page_text: spray as much as possible; oxygen branch pipes are introduced in convenient
positions, so that the spray in its descent is brought into contact and thoroughly
impregnated with free oxygen. (Overflow traps pipes and valves are provided.
Such an apparatus may obviously be designed in various ways. It may be a
chamber or column of iron or suitable material, and the liquid may be introduced
by gravity or by pumping therefore I do not limit myself to any particular or
special construction. I have in the annexed drawings illustrated one apparatus
applicable in ordinary cases which I will now describe:
Figure 1 is a sectional elevation thereof. Figure 2-a plan. Figure 3 a section on
line Y. Z. of Figure 1.
A. is the gas tight receiver shown built in the ground below the level of the usual
filters B so as to secure gravitation of the liquid, C is a pipe leading the effluent to
the top or cover a of the receiver all joints being made gas tight: c is a valve
controlling pipe.C.
C
At suitable distance below cover a I suspend or otherwise fix an atomizing
device D which may be coned as illustrated or semi-spherical or of other suitable
.form and provided with ribs or roughs d. At a suitable distance below this in the
receiver I fix a perforated basin or plate E for further atomizing the liquid and
intercepting any solids which may pass down and more than one such basin or plate
may be employed if necessary. M is the oxygen main and m m represent any
required number of branch blow pipes with suitable nozzles led from it and
introduced into the receiver between the atomizer D and the. plate, basin or basins E
and they may also be extended and introduced below the plate, basin or basins E as
illustrated so that a more complete oxygenation is effected. W is the normal water
level and Ta trap for preventing escape of oxygen and leading to overflow t which
joins a discharge pipe P leading to sewer or destination: p is a valve controlling
the latter with operating spindle p' for flushing and cleaning purposes.
The receiver should be strongly charged with free oxygen before the liquid.is
introduced and the process is then continuous. Any number of such apparatus.may
be arranged as required by the volume of impure liquid to be treated, and the
cover a and all operating parts are removable for cleaning inspection and the like.
Having now particularly described and ascertained the nature of this inven-
tion and the manner in which the same is to be performed I declare that what I
claim is :-
:-
1. The process for purifying sewage and other impure liquids which consists in
treating and thoroughly impregnating same with oxygen prior to their final
discharge substantially as described.
2. For oxygenating sewage effluents and other impure liquids the use of an
apparatus consisting of a gas tight receiver provided with one or more atomizers
for breaking up into spray the incoming impure liquid, and connected with the
oxygen main pipe by branch pipes introduced at suitable points for bringing the
free oxygen into thorough contact with the falling impure liquid and furnished with
overflow trap and discharge pipe substantially as set forth.
Dated this 6th day of November 1891.
J. C. CHAPMAN, C.P.A.,
70, Chancery Lane, London, W.C., Agent for Applicant.