Improvements in Filters.
Year: 1895

page_text: I ALFRED AUSTIN WHITLEY of 2 Malvern Villas, Chesham Road, Bury' in
the County of Lancaster, Engineer, do hereby declare the nature of my invention
to be as follows:-
My invention relates to filters intended more particularly for filtering effluent
water from bleaching works, dye works, paper mills, and the like, and has for its
object to prevent the filtering media employed from becoming solidified by the
lime or other substances contained in the effluent water or the like. According to
my invention I provide a number of filtering tanks arranged step-like or at
different elevations the water to be filtered entering the higher tank and passing
through filtering media in the said higher tank into the next tank below and so on
in succession to the lowest tank. Beneath each tank I provide a well into which the
water passing through filtering media in the higher tank, is conducted from near
the surface of the well through a vertical or ascending pipe or passage onto the
filtering media in the next tank below, the tanks being thus maintained full of
the water so that the filtering media is submerged whereby it is prevented
from becoming a solid mass as is the case when the filtering media is not
submerged.
The tanks are each provided with a grid on which the filtering media is
supported and through which the water passes into the well below in which well
sludge or deposited matter settles and from which the said deposited matter may
be discharged through sluices provided for the purpose. Each tank may be
provided with a sluice or other suitable means whereby any of the said tanks may
be put out of action for cleaning or other purpose without interfering with the
action of the other tanks. The tanks may be used without filtering media in which
case they serve simply as settling tanks.
Dated this 1st day of January 1895
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.
Improvements in Filters.
I, ALFRED AUSTIN WHITLEY, of 2 Malvern Villas, Chesham Road, Bury in
the County of Lancaster, 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 :-
My invention relates to filters, intended more particularly for filtering effluent
water from bleaching works, dye works, paper mills, and the like; and has for its
object to prevent the filtering media employed from becoming solidified by the
lime, or other substances, contained in the effluent water, or the like. According
to my invention 1 provide a number of filtering tanks arranged step-like, or at
different elevations, the impure water to be filtered entering the higher tank, and
passing through filtering media in the said higher tank, and then passing into the
07

page_text: next tank below, and so on in succession to the lowest tank. Beneath each tank
I provide a well into which the water passing through the filtering media in the
tank above is conducted, from near the surface of the well, through a vertical, or
ascending pipe, or passage, onto the filtering media in the next tank below, the
tanks being thus maintained full of the water so that the filtering media is
submerged whereby it is prevented froni becoming a solid mass, as is the case when
the filtering media is not submerged.
The tanks are each provided with a grid on which the filtering media is
supported, and through which the water passes into the well below, in which well
sludge, or deposited matter, settles, and from which the said sludge, or deposited
matter, may be discharged through sluices provided for the purpose. Each
tank may be provided with a sluice, or other suitable means, whereby any of the
said tanks may be put out of action for cleaning, or other purpose, without
interfering with the action of the other tank, or tanks. One or more of the tanks
may be used without filtering media in which case they serve simply as settling
tanks.
The accompanying drawing represents in longitudinal section and part plan an
arrangement of apparatus according to my invention shewing three filtering tanks
but I do not limit myself to this number. A are the filtering tanks arranged
successively one below the other, and each containing perforated supports, grids or
trays a, for carrying the filtering media B. Beneath each tank is a well C, and
Dare pipes leading from the top, or near the top, of each well to the next tank
below, above the filtering media therein-E is the inlet for impure water, and D² is
the outlet for the purified water, or to the next tank, if more tanks be used in
the series. F are outlets by which water can be let off from each well when
desired, and G are pipes provided with sluices, or valves, for the removal of sludge,
or deposited matter, from the wells. I have shewn in the drawing bye-passes by
which either of the tanks may be cut out of the series for cleaning, or other
purposes. These bye-passes, as shewn, consist of a trough H, into which open the
troughs h, into which the water from the pipes D discharges. 12 13 are sluices, or
valves, in the troughs H, and h respectively, by opening and closing which sluices,
or valves, the water can be directed through all the tanks, or either of them can be
cut out of the series, as desired. When the sluices, or valves h³, are closed the
water overflows from the troughs to the tank beneath, otherwise it passes from
the troughs to the trough H.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, declare that what I
claim is :-
1. A filtering apparatus constructed, or arranged, substantially as hereinbefore
described and illustrated in the accompanying drawings.
2. A filtering apparatus consisting of tanks with wells beneath and containing
filtering media and with pipes, or passages, from the upper part of the wells to
above the filtering medium in the tank below, substantially as and for the purpose
bereinbefore described.
Dated this 12th day of September 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C.