Improvements in or relating to the Disinfection or Purification of Water.
Year: 1894

page_text: Date of Application, 26th Jan., 1894
Complete Specification Left, 4th Oct.. 1894-Accepted, 17th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Disinfection or Purification
of Water.
I, CARL SALZBERGER, of Bürgsteinfurt, in the Empire of Germany, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
The present invention relates to the disinfection of water for domestic use, by
means of lime-paste, and is hereinafter more fully explained in conjunction with
the description of an apparatus specially adapted for the application of the
process.
The water derived from rivers or lakes for the supply of towns is first conducted
into cisterns or tanks and there disinfected by meaus of lime-paste.
The water thus purified in the tanks is thence conveyed, according to circum-
stances, by gravitation or pumping to a reservoir into which a pipe is led from
a reducing-valve, the pipe having as many separate coils as there are reservoirs
in use. These coils are placed near the bottom of the reservoirs and are perforated
with numerous orifices for the admission of carbon dioxide.
The admission of carbon dioxide into the vessels filled with water saturated
with hydrate of lime is continued until bi-carbonate of lime has been formed,
whereupon, by means of an outlet pipe, connecting all the vessels together the
water holding in solution the bi-carbonate of lime is conveyed to a vessel and
thence by a collecting pipe, after having traversed the sloping surfaces of the
vessel, transmitted through a pipe into another vessel.
On issuing from the first vessel the water flows through a small turbine by
which the supply of carbon dioxide is regulated proportionately to the volume
of water. In the second vessel the bicarbonate of lime, dissolved in the water,
which is prejudicial to health is eliminated in the following manner.
This vessel is fitted with an agitating apparatus in connection with a concentric
metal partition secured by feet to the bottom of the vessel which has a large
number of long vertical slits distributed over its circumference.
The agitator carries on its horizontal projecting arm, two frames holding two
plates formed like venetians or louvre boards. The partition and louvres con-
stitute electrodes, being for that purpose formed respectively of aluminium and
carbon.
The openings in these electrodes serve to provide an extensive surface of
contact between the water and the electrodes, which are connected through the
vessel and agitator axle with the leads of a dynamo. The agitator is intended to
set the water in brisk motion during the passage of the electric current, so as to
prevent the lime carbonate and carbon dioxide (formed during the process) from
forming a deposit or being precipitated on the surface of the electrodes so as to
weaken their efficiency. The water, now mixed with monocarbonate of lime,
passes off into the first vessel. Here it has to pass over the sloping surfaces and
after complete and thorough purification, the water enters into the collecting pipe,
finally flowing away to be distributed, for use.
A small pipe leading from the second vessel to the reservoir is intended to
conduct the carbon dioxide set free in the second vessel to be re-used with the
line-water. Variations in the details of the apparatus may be made.
Dn orth day of January 1894.
W. P. THOMPSON & BOULT,
Of London, Nottingham, Liverpool, and Manchester,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to the Disinfection or Purification
of Water.
I, CARL SALZBERGER of Bürgsteinfurt, in the Empire of Germany, Civil
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 :-
The present invention relates to the disinfection of water for domestic use, by
means of lime-paste, and is hereinafter more fully explained in conjunction with
the description of an apparatus specially adapted for the application of the
process.
This apparatus is illustrated in the accompanying drawings in which :-
Figure 1 is a sectional elevation,
Figure 2 is a sectional plan and
Figures 3 and 4 show various details.
The water derived from rivers or lakes for the supply of towns is first conducted
into cisterns or tanks and there disinfected by means of lime-paste.
The water thus purified in the tanks is thence conveyed, according to circum-
stances, by gravitation or pumping to the reservoir a (Figure 1), into which a
pipe z is led from a reducing-valve Z the pipe having as many separate coils see
Figure 2, as there are reservoirs in use. These coils are placed near the bottom of
the reservoirs a and are perforated with numerous orifices for the admission of
carbon dioxide.
The admission of carbon dioxide into the vessels filled with water saturated with
hydrate of lime is continued until bicarbonate of lime has been formed, whereupon,
by means of the outlet pipe b connecting all the vessels a together, the water
holding in solution the bicarbonate of lime is conveyed to a vessel J and thence by
the collecting pipe m after having traversed the sloping surfaces d of the vessel J,
transmitted through the pipe p into another vessel ✗ which it enters at q.,
On issuing from the pipe b the water flows through a small turbine T by which
the supply of carbon dioxide is regulated proportionately to the volume of water.
In the vessel X the bicarbonate of lime, dissolved in the water, which is prejudicial
to health is eliminated in the following manner.
This vessel is fitted with an agitating apparatus S in connection with a
concentric metal partition E secured by feet to the bottom of the vessel X
which has a large number of long vertical slits y distributed over its circum-
ference.
The agitator S carries, on its horizontal projecting arm, two frames w holding
two plates formed like venetians or louvre-boards E. The partition E and
louvres E' constitute electrodes, being for that purpose formed respectively of
aluminium and carbon.
The openings in these electrodes serve to provide an extensive surface of contact
between the water and the electrodes, which are connected by e and e' with the
leads of a dynamo. The agitator S is intended to set the water in brisk motion
during the passage of the electric current, so as to prevent the lime carbonate and
carbon dioxide (produced during the process) from forming a deposit or being
precipitated on the surface of the electrodes so as to weaken their efficiency. The
water, now mixed with monocarbonate of lime, passes off through the opening n in
the direction shown by the arrow, and through the pipe t into the vessel J'.
Here
it has to pass over the sloping surfaces a¹ and, after complete and thorough purifi-
cation the water enters by the opening o' into the collecting pipe m¹, finally flowing
away through the pipe p' in the direction of the arrow, to be distributed for use.

page_text: The small pipe leading from the vessel X to the reservoir a is intended to
conduct the carbon dioxide set free in the vessel X to be re-used with the
lime-water. Variations in the details of the apparatus may be made.
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:-
1. The disinfection and purification of water by the aid of lime-paste and carbon
dioxide characterized by carbon dioxide being introduced into the water after
mixture ith lime hydrate until bicarbonate of lime is formed and the subsequent
subjection of the water to the action of an electric current to separate and set free
the lime carbonate and carbon dioxide substantially as specified.
2. In the process set forth in Claim 1 the employment of an apparatus for the
electrolytic treatment of the fluid comprising an agitating device such, as S
operating in a reservoir filled with the fluid and having two vertical frames such
as E provided with louvre-boards and forming one electrode and a concentric
perforated metal partition such as E which forms the other electrode such
electrodes being for that purpose respectively formed of aluminium and carbon
substantially as described and illustrated in the accompanying drawings.
Dated this 4th day of October 1894.
W. P. THOMPSON & BOULT,
Agents for the Applicant.