Improved Means for Purifying the Effluent Water of Factories and the like, also River Water and Sewage.
Year: 1897

page_text: Improved Means for Purifying the Effluent Water of Factories
and the like, also River Water and Sewage.
We, WILLIAM GREIG and WILLIAM EDWARD GREIG, both of Creek Mill House,
Dartford, Kent, Gentlemen, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to means of purifying the effluent water of paper mills,
banneries, chemical works, ink makers, dye works, and other factories and the
like, also river water or sewage, to the extent of de-colourizing and de-odorizing
the same, removing the colouring and noxious smelling matters and all fibrous
matters in suspension, and causing the water to issue colourless, clear and in-
odorous and fit to return to running streams of water.
To this end, the invention cousists in the use of a series of closed settling
chambers, in combination with a closed filtering chamber, from one to the other
of the former of which chambers the liquid pumped into the first thereof, is
siphoned, and from the last of which to the filtering chamber the partly purified
liquid is similarly transferred, then finding its way through the filtering medium
therein contained and out thereof in a purified condition.
The filtering medium consists of ashes, which are closely packed into the filter-
ing chamber and are divided into vertical strata separated by removable perforated
diaphragms of wood or other material, which are covered with fine wire in order
to keep the ashes intact.
The sediment chambers are so constructed as that the matter deposited therein
may be easily removed therefrom either by being washed out or by being
lifted out or otherwise in any convenient manner. The filtering chamber is also
so constructed that it may be opened and the ashes charged with the arrested
matters removed and replaced by a fresh charge.
Any desired number of the settling chambers may be used, and, if required,
more than one filtering chamber may be used, the settling chambers being intended
for arresting such of the matters in suspension as gravitate therein, and the filtering
chamber being intended for the arrestment by the filtering action of the ashes
on the liquid filtering therethrough of the finest or float matters with which the
effluent may be charged.
133
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicants.

page_text: Improved Means for Purifying the Effluent Water of Factories
and the like, also River Water and Sewage.
We, WILLIAM GREIG and WILLLAM EDWARD GREIG, both of Creek Mill House,
Dartford, Kent, Gentlemen, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to improved means for purifying the effluent water of
paper mills, tanneries, chemical works, ink-making works, dye works and other
factories and the like, also river water and sewage, (hereinafter referred to as the
effluent"), to the extent of de-colourizing and de-odorizing the same, removing
the colouring and noxious smelling matters and all fibrous and other matters in
suspension, and causing the water to issue from the apparatus colourless, clear and
inodorous and fit to mingle with or return to running streams of water.
On the accompanying drawings;
Fig. 1, represents an elevation, partly in section, of the improved apparatus;
Fig. 2, represents a plan, partly in section; and
Fig. 3, represents a side elevation, partly in section, of one of the removable
filter medium receptacles, hereinafter referred to.
To the end aforesaid, the invention consists in the use, in combination, of a
connected series (of any required number) of closed settling or sediment
chambers, a, a, a, a³, with a closed filtering chamber, b, containing any required
number of compartments, 6, 63, serving to receive removable receptacles, 67, charged
with ashes, 63, as the filtering medium and which may be coarse or fine according
to the particular industrial application of the invention, and with means of forcing
the effluent to be purified through the apparatus under pressure as hereinafter
more fully described.
The chambers, a, u¹, a³, a³, are placed in continuous connection by means of
pipes,, the legs of which are upturned to prevent washing out of the sediment,
the outlet leg, a, of each pipe being arranged at a higher lover than that of its
inlet leg, as, to take off the filtrate at its clearest part.
Each of the settling chambers is made with an inclined hopper-like sediment-
collecting bottom, a', formed with an outlet provided with a sludge-cock, as, and
is also provided with a manhole, a³, for facilitating access to its interior for any
necessary purpose.
The first of the series of such chambers is connected to a pump, c, or other
convenient means of forcing the effluent to be purified under a sufficient pressure
or licad into and through the apparatus, the last of the series of such chambers being a
connected by a pipe, ao, (similar in arrangement to that of the pipes, at) to the
filtering chamber, b, which also is made with a sediment collecting chamber, 65,
similarly formed and adapted to those, a, to a, horein before described, and is
fitted with a valve, 68, serving to relieve any accumulation and excess of pressure
in the filtering chamber of air carried over by the filtrate.
4
The filtering chamber may be made of any required extent, according to the
particular industrial application of the apparatus, and with any required number
of compartments, b', 63, each of which is fitted with a receptacle, 67, adapted and
serving to contain the filtering ashes, b, which are closely packed therein, the
receptacles being respectively removable from the compartments of the chamber, b, 4
and being located therein by vertical guides, b. The adjacent sides of the recep-
tacles are adapted to retain the ashes and yet to permit of the through passage of

page_text: the filtrate by being formed with perforations, 68, covered with fine meshed
wire, 610
The settling and filtering chambers may respectively be made of wood, or of
iron, or of other suitable metal or material, the top of the filtering chamber being
so constructed that it may be opened to permit of the ash receptacles, 67, being
removed when charged with the arrested matters, and replaced charged with fresh
ashes.
The settling chambers serve to arrest the coarse matters in suspension in the
filtrate which gravitate therein, and the filtering chamber serves by the filtering
action of the ashes in arresting the finer or float matters in suspension therein to
complete the required purification of the effluent, by which combined action, the
filtrate is caused to issue from the apparatus by an outlet pipe or pipes, 611, de-
colourized, de-odorized and fit to return to or mingle with running streams of
water without liability of polluting the same.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
wo claim is:-
In apparatus for purifying the effluent water of paper mills, tanneries, chemical
works, ink-making works, dye-works, and other factories and the like, also river
water and sewage, to the extent or for the purpose stated, in combination, a series
of closed settling chambers, and a closed filtering chamber charged with removable
cages of ashes as the filtering medium, the chambers being respectively connected
by upturned pipes, and means connected with the inlet settling chamber for forcing
the effluent to be purified through the apparatus, as set forth.
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicants.