Year: 1887

page_text: Date of Application, 7th Mar., 1887
Complete Left, 5th Dec., 1887
Complete Accented. 6th Jan., 1888
I. GUSTAV BISCHOF of No. 4 Hari Street Bloomsbury in the County of Middlesex,
Technical Chemist, do hereby declare the nature of this invention to be as follows:-
My invention relates to means of purifying water, which effect by intimately
mixing with it iron in a state of fine sub-division, preferably pulverised spongy iron.
After intimate mixture, I separate the larger portion of the iron by subsidence, and
then, by aëration of the treated water, I effect separation of farther portions of the
iron by peroxidation and consequent precipitation.
For carrying on this process, various arrangements of apparatus may be employed.
According to one arrangement, which is convenient in practice, I employ two vessels
provided with agitators. In the one, which has a charge of the finely divided iron, L
agitate the water as it passes through it, and run this water mixed with iron into
the other, where subsidence takes place. When much of the iron has passed from the
first vessel to the second, I reverse the flow of the water, using the second vessel for
effecting the mixture and the first for subsidence.
Obviously a single vessel may be employed, first for mixing by agitation and after-
wards for subsidence. Or a single vessel may be divided into two compartments, in
one of which agitation and mixture take place, and in the other subsidence, the iron
deposited in the latter being from time to time removed and replaced in the former
compartment.
1 1531

page_text: I, GUSTAV BISCHOF, of No. 4 Hart Street, Bloomsbury, in the County of Middlesex,
Technical Chemist, 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 :-
My invention relates to means of purifying water which I effect by intimately
mixing with it iron in a state of fine suludivision, preferably pulverised spongy iron.
After intimate mixture 1 separate the larger portion of the iron by subsidence and
then by aëration of the treated water 1 effect soparation of farther portions of the iron
by peroxidation and consequent precipitation.
For carrying on this process, various arrangements of apparatus may be employed.
According to one arrangement, which is convenient in practice, I employ two vessels
provided with agitators. In the one which has a charge of the finely divided iron, I
agitate the water as it passes through it and I run this water mixed with iron into the
other, where subsidence takes place. When much of the iron has passed from the first
vessel to the second I reverse the flow of the water, using the second vessel for effecting
the mixture and the first for subsidence.
Obviously a single vessel may be employed, first for mixing by agitation and
afterwards for subsidence.
Or a single vessel may be divided into two compartments, in one of which agitation
and mixture take place, and in the other subsidence, the iron deposited in the latter
being from time to time removed and replaced in the former compartment.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed declare that what I claim is :-
1. The herein described process for purifying water by mixing with it iron in a
state of fine division, allowing subsidence of part of the iron, and effecting precipitation
of a farther quantity of the iron by aerating the liquid.
2. For carrying out the process referred to in the preceding claim, the use of two
vessels or compartments arranged to act in rotation as herein described.
Dated this 5th day of December 1887.
ABEL & IMRAY,
Agents for the Applicant.