The Guthrie daily leader. [volume] (Guthrie, Okla.) 1893-1996, 1908-12-18
WORKINGS Or THE
FILTRATION PLANT
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General Piah Of the Plant Now
In Course of ,Goht
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Considerable interest IS being TAX
en- in the ultimate benefits To be de-
rivea from the now city filtration
now In process Of construction ct
Island park The general plan of
construction will pr. - 90 interest.
The raw waseg W..i 1e pumped
from the Cottcnwocl river ny L.
100000 gal, single stage, electrically
driven centrifugal pump into @ large
basin IN two compartments called the
sedimentation basin The maximum
elevation being about 30ft above the
river level ct may be stated by
way OF parenthresis that from this
point there will be no pumping neces-
sary, the wafer being hanled entire
~ by gravtation.
As the water enters ana flls
the first compartment Of the basin,
the water level gradually risins, Che
mud settles down TO the bottom.
This partially clarified water then
flows into the other compartment Of
the sedimentation basin, receiving an
injenction Of chemicals just before
entering IT, CTae pu pose Of the
chemicals is TO coagulate the mud.
AMI any organic matter in fact all
substances foreign TO clear water
thus promoting sedimentation)
After this last process OF sedlmen-
taiicl the Sater flows. quite clear
into the filters two in numoer, and
exact duplicates Of each other.
Here the water enters large tank
the bottom Of which, constitutes the
filter prope- This bottom or filter
win consist first Of a layer OF 30 inch
es OF sand t1en a layer of inches
OF gravel, the two layers being separ-
ated by 6 fine wire screen of, aboT'
90 meshes to the square inch. Be-
low. and supporting these layers OF
sand and gravel will be q brass plate
vita holes in it--this plate constitut-
ing sieve The holes will he about
an eighth OF an inch in diameter and
viii number about Ga to theDinch.
Below this sand, gravel. screening
and sieve, there will be pa,alell drains
conducting the water to a central and
main drain from which II will flow
to the clear water reservoir. ready for
listribution.
The Sedimcntation, Basin.
The seiimentation basin will be
constructed OF reinforcei concrete
and will measure 40 by so f.. with an
average depth OF 15ft., graduating
from 13 to lift toward
the intakemeBts OF equal size and ca
pacity, each measuring 80 soft and
having a capacity of 5000, 600 gallons;
the two compartments being separated
by wall of the same material
The water will enter the first cDm-
partment at a point about AT above
the bottom through rectangular in
takes extending across the end face of
the Compartment.
The water leycl rising as water is
pumped into the compartment. it fin
ally reaches some outlets of construc-
ton similar to that Of the intakes but
located near tne top of the opposite
END face ofs the compartment.
Through these tn water 1cws into
pine enclosed in the wall dividing the
compartments and is conlucted back
to the other compartment entering al
the same end as il entered the first
one and IN precisely the same man
ner. But just before it enters this
compartment of The sediment6t0n
basin there will BIZ mixed with it Tmc
and iron in certain prnportioX, as