Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1909-10-19
REPORT OF ENGINEERS ON THE CITY FILTER PLANT


lalternate bid in which the coagulation
basin may be omitted and the south
end of the present sedimentation basin
mo. 2 may be divided off and provide
with suitable arrangements for coag-
ulating the water there. The cost Of
this alternate proposition they place
at $5G,500.
Jewel FiIterfnE Company.
The New York Continental Jewel
Filtering company. New York City
This company proposes to locate their
| Offering plant in the old filter basin
No. 4, removing the sand and gravel
therein and using the space. Like the
Roberts Filter Manufacturing COM
pany, they, too, offer a special coaS-
ulating bason of one-half million gal
Ions capacity covered and baffied but
so arranged that it may be carried in
duplicate compartments. This basin
forms the foundation for the building
and adjoins the filters which extend
to the south. The old sedimentation
basins are left practically as they are
now. This company has tested one ri
these basins and state that it is en-
| tirely tight up to a level within three
ing. They propose to put the level of
their filter at such height that in the
future should the basin be refined AMI
/ The flow line raised their plant win
operate by gravity, but for the present
| they suggest two centrifugal pumps
operating by electric current raising
| the water to the level of the filters.
BY means of these pumps the sedimen-
| tation basins may be drawn down and
sufficient storage thus obtained so tina;
pumps at the river station may Re
stopped at any time for reasonable re-
pairs or might possibly be used only
l6 hours each day if a new and larger
main shall be laid to the reservoir.
1t may be said in passing that the
annual current cost to lift water to the
filters is estimated at about 5000 per
year, AMI with interest AMI deprecia-
ton about 5000 Per annum. all of which
should be carefully considered in con-
nection with the betterment which this
arrangement undoubtedly makes over
some of the other propositions
The building proposed by this com
pany covers portion of the filters and
is substantial and of good appearance.
The company provides a complete by
drauIic operating equipment and their
filters are of the well-known and long
tried Jewel arrangement.
The proposition for this plant COM
plete, together with their extra price
for recording gauges and pumps( but
not including the laboratory equipment
proposed) is $59590.
Fred II. Ley II Co.
Fred T. Ley & Co, Inc, New York
City.-This company proposes an east
and west filter situated in the site left
for the original No filter. There is
ample space for future extension. This
company proposes to waterproof and
line one sedimentation basin and the
clear water well Cloth on the sides and
bottom) with five ply felt and asphalt
covered with a layer of four-inch brick
or concrete. They name an extra price
for this lining of $1,000 for one sedi-
mentation basin and $4,000 for the
clear water basin.
A novel and carefully worked out
scheme for self contained unit battles
in the sedimentation basin is proposed
with the idea of protecting the battles
against destructive ice in winter. Suit
able flexibility for coagulating pur-
poses has been obtained and the prop
osition provides for "a inch, 80 inch
and sc inch piping to or from the FL
tiers as may be selected.
The building proposed is substan
tial. ample and well arranged The
filters are equipped with non-patented
manifold system and combined water
and air wash. There is hydraulic oper-
alton from a central table for each i'll
ter unit and there is ample laboratory.
office, coagulating store and other
space The filter level is such that 1T
least four feet variation may be had in
the coaguIation basin. which is valua-
BILE.
The general bid of this company for
their plant including so inch pipe con
nection. additional hypo-chloride solu- |
ton tanks and battles is $46,230, and |
with the lining of the sedimentation
basin and the clear water basin as
noted above, their bid becomes S67,539. !
PittsburG Filter Manufacturing co.
Pittsburg Filter Manufacturing COM |
pany Pittsburg, Pa.-This company !
proposes to locate their filter plant in
the old No. 1 filter basin. clearing out
the sand and gravel in that basin for /
this purpose and using the original
floor of the basin for the foundation