Improvements in and connected with the Treatment of Sewage and like Liquids.
Year: 1897

page_text: Date of Application, 16th Jan.,
1897
Complete Specification Left, 18th Oct., 1897-Accepted, 4th Dec., 1897
PROVISIONAL SPECIFICATION.
Improvements in and connected with the Treatment of Sewage and
like Liquids.
We, JAMES PRATT of 6, Spring Bank, Shipley, in the County of York,
Engineer, WILLIAM, PREST, Alexandra Crescent, Ilkley, aforesaid, Civil Engineer,
and GEORGE BRUNEL WAUGH, of 42 Manville Terrace, Bradford, aforesaid, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to certain improvements in and connected with the
treatment of sewage and like liquids and relates more particularly to the method
of and apparatus for applying the chemical agent to the effluent for the purpose
of precipitation, and has for its object the arrangement of an apparatus in such a
manner that the chemical agent is automatically added to the effluent in the
requisite proportion and automatically regulated according to the flow of sewage,
without the aid or attention of the attendant.
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33
We accomplish our object in the following manner. In any convenient position
in the channel through which the sewage passes we mount in suitable bearings
an ordinary under or over shot" water wheel, to the journal of which we
secure a disc or the like to which is connected one end of a rod, the opposite end
being connected to a lever secured to a rocking shaft mounted in a suitable position
over a receptacle containing the chemical agent in solution. The before mentioned
rocking shaft supports a small chamber provided with a number of detachable
tubes on each side mounted at right angles to the axis of the rocking shaft.
The chemical agent to be used for the purpose of precipitation is contained
in a reservoir or reservoirs placed in any suitable position, and is allowed to pass
into the before mentioned receptacle by means of a ball tap or the like whereby
the chemical agent in the receptacle is always at or about the same level.
The action of the apparatus is as follows. The sewage passing through the
before mentioned channel operates the water wheel whereby the rocking shaft is
operated in such a manner that the tubes on each side of the chamber mounted
on the said shaft have their outer ends alternately immersed in the chemical
agent contained in the receptacle beneath, whereby a certain amount of chemical
is raised at each revolution of the water wheel and is discharged into the before
mentioned small chamber from which it is conducted into the channel in any
convenient manner and there mixed with the sewage.
It will be easily understood that as the rate of flow of sewage increases, the
number of revolutions of the water wheel will likewise be increased, consequently
the rocking shaft will be operated at a corresponding increased rate and a larger
amount of chemical agent will be automatically added to the sewage.
By the increase or decrease in the number of tubes connected to the before
mentioned chamber which raise the Chemical Agent at each revolution of the
water wheel, the amount of chemicals discharged into the sewage may be easily
[Pain Q17

page_text: regulated as is required to meet the varying quality of the sewage to be dealt
with during certain parts of the day.
JOHN WAUGH
Agent.
Improvements in and connected with the Treatment of Sewage and
like Liquids.
с
We, JAMES PRATT, of 6 Spring Bank, Shipley, Engineer, WILLIAM PREST, of
Alexandra Crescent, Ilkley, Civil Engineer, and GEORGE BRUNEL WAUGH, of 42 1
Mannville Terrace, Bradford, Civil Engineer, all in the County of York, 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 certain improvements in and connected with the 1
treatment of sewage and like liquids, and refers more particularly to the method
of and apparatus for supplying a chemical agent to the sewage or other effluent
for the purpose of effecting precipitation; and has for its object, the arrangement
of an apparatus in such a manner that, a chemical agent held in solution is
automatically added to the effluent in the requisite proportion according to the 2
flow of the sewage or the like, without the aid or attention of an attendant.
In order that our invention may be fully understood, we will describe the same
in detail by making reference to the accompanying sheet of drawings, in which
Fig. 1 represents a plan view of our improved apparatus.
Fig. 2 is an elevation of the same shown partly in section.
Fig. 3 is an end view also partly in section, and
Figs. 4 and 5 detached details drawn to a larger scale.
<
In all the figures similar letters indicate similar parts where they appear.
The sewage or the like is conducted in a channel A. of convenient section, and
in the said channel, we mount an ordinary "under" or over shot" water wheel B. a
in a manner, that the same is caused to rotate by the flow of the sewage or the
like.
Secured to one end of the wheel axle C. is a disc or the like D. prepared with a
crank pin on which is mounted a rod F. connecting same to the lever G. secured
to one end of a rocking shaft H. mounted in journals over the receptacle J. 3
containing the chemical agent in solution.
Secured to the before mentioned rocking shaft H. is a small box or chamber K.
provided with a number of detachable tubes L. connected to the said box or
chamber, and made fluid tight by means of india rubber or other suitable flexible
washers M, the outer end of the said tubes are curved upwards for the purpose 4
as hereinafter described.
The chemical to be dissolved or used in the precipitation may be placed in
one or more reservoirs 0. 0¹. and is conducted to the before mentioned receptacle J.
by pipe P. connected to reservoir O¹, the amount of discharge being regulated by
a ball tap Q. fitted thereto and of the ordinary construction for keeping the 4
chemical solution in the receptacle J. at the same level or height; the ball tap
to be, made of vulcanite or of such material as is not affected by the chemical
agent.
i
The reservoir O. may if desired be utilized for the purpose of dissolving the

page_text: chemical agent, and when the necessary strength of solution has been obtained,
the liquid is run off through tap R. into reservoir O¹.
The action of the apparatus is as follows. The sewage or the like passing
through the channel A. operates the water wheel B, thereby actuating the rocking
shaft H. and box or chamber K, causing the tubes L. which are curved upwards
at the end somewhat as shown by Fig. 5 to be alternately immersed into the
chemical solution in receptacle J. beneath, thus to some extent filling the
immersed tubes L. which is retained by the upturned ends, and on the reversal
of the oscillation, a certain amount of solution thus raised is run into the box or
chamber K, from which it is discharged by means of a flexible pipe S. and run
into the channel A. where it mixes with the sewage or the like; the water wheel
shaft and other portions of the apparatus with which the chemical agent may
come in contact, to be of vulcanite or such material as is not affected by the
chemical agent.
It will be easily understood that as the flow in the channel A. increases, the
number of revolutions of the water wheel will be proportionately increased, con-
sequently the rocking shaft and pipe immersions will be increased in like pro-
portion; thus lifting more of the chemical solution from the receptacle J. and
delivering it into the sewage or the like flowing through the channel A; should
the flow decrease, then the water wheel B. will revolve lower and a less quantity
of the chemical solution mixed with the sewage or the like.
The tubes L. are detachable from the box or chamber K. so that by regulating
the number, and making up the holes from which the tubes are extracted, the
necessary number of tubes or pipes L. may be determined for raising the amount
of chemical solution required, for effectually treating the sewage or the like with
the wheel rotating at a certain speed, and thus by these means, to effectually
treat and precipitate the solids in the sewage or the like under operation, without
running the chemical solution to waste.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
1. A rocking shaft H, box or chamber K. provided with pipes L. having
upturned ends and outlet pipe S. combined with a receptacle J, all arranged and
operated substantially in the manner and for the purpose as hereinbefore set
forth.
2. A box or chamber K. provided with a suitable outlet pipe S. and pipes L.
having upturned ends oscillating in any convenient manner for the purpose of
raising a solution from a receptacle and mixing it with sewage or the like.
Dated this 15th day of October 1897.
JOHN WAUGH
Agent.