The daily telegram. [volume] (Clarksburg, W. Va.) 1901-1926, 1911-11-18
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.coatinued from &c &c.


ibasin together with equipment Tor
preparing solutions Of chemicals and
for washing the filters 1T Is con-
structed throughout in the most per-
manent and substantial manner, all
floors. tanks, alters aud the filtered
water basin being reinforced con-
icrete and the building which houses
them being brick with a slate ana
title roof supported on steel framing
making it completely hre-proof 3.
The four alters have a cons
bined area OF altering surface of 900
lsquaYe feet and contain a bed of zine.
white quartz sand, Y inches thick,
resting upon nine inches of carefully
graded quartz gravel through which
the water is altered. IN the bottom
of each litter IS a strafner system
comprising central manifold with
ilaterals six inches apart into which
800 small brass strainer cups are
tapped, the purpose OF which is to
remove the pure water as 1t perco-
lates through the sand bed and to
permit the application OF compressed
air and filtered water beneath the
same when it becomes clogged with
impurities. Each filter is provided
with four troughs above the sand
bed so arranged as to skim of the
dirty water as it rises from the sand
when the litter is being washed and
discharge it into the sewer. On the
emuent pipe from each filter there is
an automatic controller which can
be adjusted to maintain uniformly
any desired rate OF altration through
the bed.
| Between the filters is pipe gal
lery where the various valves, piping
connections, controllers, float tuDes
and other filter appurtenances are
located and above this; overlooking
the filters, ise the operating floor.
| On this floor in front OF each flteG
is placed marble table on which
are mounted devices for hydraulicaE
ly controlling all the filter valves
and indicating the movement OF
same together with a loss of head
gauge which records on a chart the
amount of c1ogging of the alter sand
so that the entire operation of the
filters can be carried out from this
point.
The machinery room contains a
Root positive Rotary Blower with
capacity of 900 cubic feet of air
per minute and a Wilmington Cen
trifugal pump with a capacity Of
800 gallons of water per minute,
each driven by a Pendleton water
wheel, for furnishing air and filtered
water under pressure for washing
the filters.
The chemical department com
prises three pairs of tanks for chem
ical solutions, one for sulphuate Of
alumina one for lime and the third
for calcium hypochlorite or bleach,
each tank being equipped with a
suitable dissolving compartment
and device for stirring the solution.
There is also three pairs OF feeding
devices for accurately feeding the
chemicals to the raw water, ana
three pairs OF chemical pumps for
pumping the solutions to the re-
quired points thus making the en-
tire chemical equipment in duplicate
and thus entirely reliable. a ny
draulic elevator is also provided
for raisin chemicals to the mixing
room.
The laboratory has been COM
pIeteIy equipped for making the
necessary chemical and bacteriolog-
ical analysis to govern the Opera
ton of the plant and determine the
purity OF the water being supplied
! to the city. A Ventiri METER has
been Installed to measure the guam
itity of raw water being pumped so
that the proper amounts Of chem
icals may be added Beneath the
filters, pipe gallery and machinery
room there is filtered water basin
with a storage capacity of 100000
gallons,
In the operation OF the plant a
small quantity of sulphate of
almina. from one alt to two grains
per gallon usually, is added to the
raw water as it is pumped to the.
settling basins. This combines with
the lime naturally present in the
water to form n sticky, focculenL
precipitate which clots together the
various impurities, such as bacteria,
particles of clay, ETC., the action
Il 4