Water Containing Organic Matter.
Year: 1885

page_text: Water Containing Organic Matter.
We WILLIAM FREDERICK BARTON MASSEY-MAINWARING of N° 30 Grosvenor
Place Hyde Park in the County of Middlesex Bachelor of Laws and JAMES
EDMUNDS of No 8 Grafton Street Piccadilly in the County of Middlesex Doctor
of Medicine Member of the Royal College of Physicians of London Medical
Officer of Health and Public Analyst for the District of Saint James Westminster
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
TREATMENT AND PURIFICATION OF SEWAGE AND WATER CONTAINING ORGANIC
MATTER " to be as follows:-
Our Invention consists of the improvements hereinafter described in the treat-
ment of sewage and the effluent water of partially purified sewage also in the
treatment of other water containing organic matter in suspension or solution.
According to our said Invention we force or discharge into the sewage or
contaminated water to be treated streams of water highly surcharged with oxygen
and we thus artificially aërate the sewage or contaminated water and produce rapid
oxidation of the organic matter contained in it.
In carrying out our Invention we charge a suitable air-tight vessel of sufficient
strength with a portion of the liquid to be treated and we force atmospheric air
by means of a force pump or otherwise into the liquid contained in the said vessel
and the liquid thus surcharged with oxygen in solution we discharge through tubes
or otherwise into streams of the sewage or water to be treated or into reservoirs or
tanks containing such sewage or water.
When atmospheric air is forced into water the oxygen of the is dissolved in the
water to a much greater extent than the nitrogen consequently the air in any
portion of the vessel unoccupied by the water consists so largely of nitrogen as to
be of little or no service in the treatment of water and often is a great incon-
venience. We therefore provide for the separation of the residual compressed air
from the oxygenated water and where desirable we utilize the elastic force of
such residual compressed air for actuating machinery or for any other purpose to
which it is applicable.

page_text: Improvements in
Water Containing Organic Matter:
We WILLIAM FREDERICK BARTON MASSEY-MAINWARING of N° 30 Grosvenor
Place Hyde Park in the County of Middlesex Bachelor of Laws and JAMES
EDMUNDS of N° 8 Grafton Street Piccadilly in the County of Middlesex Doctor
of Medicine Member of the Royal College of Physicians of London Medical
Officer of Health and Public Analyst for the District of Saint James Westminster
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
TREATMENT AND PURIFICATION OF SEWAGE AND WATER CONTAINING ORGANIC
MATTER" and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
-
Our invention consists of the improvements hereinafter described in the treat-
ment of sewage and the effluent water of partially purified sewage also in the
treatment of other water containing organic matter in suspension or solution such
as water intended for the supply of towns and for drinking and for domestic use.
According to our said Invention we force or discharge into the sewage or
contaminated water to be treated streams of water highly surcharged with oxygen
and we thus artificially aërate the sewage or contaminated water and produce
rapid oxidation of the organic matter contained in it.
•
In carrying out our Invention we charge a suitable air-tight vessel of sufficient
strength with a portion of the liquid to be treated and we force atmospheric air
by means of a force pump or otherwise into the liquid contained in the said vessel
and the liquid thus surcharged with oxygen in solution we discharge through tubes
or otherwise into streams of the sewage or of the water to be treated or into
reservoirs or tanks containing such sewage or water.
Figure 1 of the accompanying drawings is a plan of a portion of a sewage tank
showing an arrangement for discharging water surcharged with oxygen into the
effluent passing from the said tank and Figures 2 and 3 are sections taken
respectively on the lines X and Y Figure 1. A is the tank B is the effluent
channel and C is a well or shaft sunk in the effluent channel and divided by a
vertical partition D in the lower part of which is an aperture. E (shown in Figure 3)
forming a means of communication between the parts of the well C on either side
of the said partition. F is a pipe through which oxygenated water is discharged
or is forced into the said well the said pipe terminating. n
-near the bottom of the
well and being provided at its end with a spreader G by which the oxygenated
water passing from the pipe is diffused into the effuent as it passes through the
well C. The course taken by the effluent in passing through the well is indicated
by the arrows in Figure 3.
The vessel in which the water is oxygenated and the apparatus by which air is
forced into it are not shown in the drawings. The said vessel may be of any
convenient form and construction the only requirement being that it shall be of
sufficient strength to withstand the internal pressure to which it will be subjected
by the compression of air within it which pressure need not in ordinary cases

page_text: exceed two hundred rounds to the square inch. The apparatus for forcing air
into the said vessel may be a force pump or any other known apparatus which
will answer the purpose.
Instead of the arrangement hereinbefore described for diffusing the oxygenated
water into the effluent it may be discharged from perforated pipes laid in the
channel through which the effuent passes or it may be otherwise discharged in or
added to the effluent. We however prefer the arrangement hereinbefore described
with reference to the accompanying drawings because when the oxygenated water
is discharged under the pressure of a lofty column of the effluent the oxygen is
retained in solution for a longer period than when discharged under slight pressure
and in consequence a more prolonged and thorough effect on the effluent is
produced.
Our invention is applicable equally to the treatment of effluent sewage water
resulting from the treatment of sewage with chemical precipitants and to the
effluent water of sewage after the coarser matters have been separated therefrom
by subsidence or filtration or straining or skimming without chemical action and -
to sewage in the raw or untreated state but we prefer to treat the effluent water
after separation of the coarser matters so far as they can be separated by
subsidence or by chemical precipitation or by filtration or by straining or by
skimming.
In treating water intended for the supply of towns for drinking and for
domestic use we proceed as herein before described with reference to the effluent
water of sewage.
When atmospheric air is forced into water the oxygen of the air is dissolved in
the water to a much greater extent than the nitrogen consequently when air is
forced into water in a closed vessel the residual air or that in any portion of the
vessel unoccupied by the water consists so largely of nitrogen as to be of little or
no service in the treatment of water. Therefore the vessel in which the water is
oxygenated may be provided with a stopcock at the part in which the residual air
collects in order to admit of the release of the said air which may either be allowed
to escape into the atmosphere or be conveyed by means of a pipe to an air engine or
other machine or apparatus in which the elastic force of such residual compressed
air may be utilized The elastic force of the said residual compressed air may
however be utilized in the said vessel for expelling the oxygenated water
therefrom.
Having now particularly described and ascertained the nature of our invention
and in what manner the same is to be performed we wish it to be understood
that we make no claim to the mere aëration of sewage or water by forcing air
into or through it nor do we limit ourselves to the precise details of the method
hereinbefore described for carrying our invention into effect as the said details may
be varied without departing from the nature of our invention but we declare that
what we claim as our said invention of "Improvements in the treatment and
purification of sewage and water containing organic matter" is
Forcing or discharging water surcharged with oxygen into the sewage or water
to be treated.
W. T. WHITEMAN,
Agent for the Applicants.