Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1915-12-31
AM ARcr ANNUAL FRIDAY DECEMBER 81 1918

feet. The pumps showed an efficiency
OF IS $40 per cent under the dynone-
ter test. and the turbine performed
duty Of 10000 .009-toet pounds Per
900 pounds Of dry steam, with steam
pressure at only IS pounds
The pumping unit was erected On its
foundation al the Twenty-fourtn street
pumping station In April and the early
part Of May. and was tested May q,
which showed up az follows: 4.I24 gal
Ions per minute at / ,742 revolutions per
minute. wlsh a suction liz Of 10 feet
and a discharge head Of ZIG feet Of
total head OF e3s feet.
After this last test the pump was
rsn for abont two months 10 De sure
everything was in good working order
and that It coald be depended upon 10
do tae clty's pumping. Then the Snow
pump vas dismanued, the pInngers
and plnnger rods were taken out and
traed up, the valve decks in the water
end Of the pumps that were cracked
through the center were repaired with
bar copper. all Of the rubber valves
we're GROUND, aud all the valves that
we're worn too badly were replaced
with new ones, the valve seats we're
ali faced Up, so that the valve would
have 9. true surface upon them while
working. new bearings were put in
the crank rods, and the air pump was
entirely rebuilt, and the steam valves
DIG the engine end Of the pump were
adjusted. ar were the pistons. So that
after this pump was again put into
. service it showed that the siippage
was reduced from 1G per cent down &C
+ / per cent. A concrete floor was
/ placed in the station where the old
pump was removed and the interior
was painted, giving it neat appear
ance
Liquid Chlorine rs Filter.
At the filter plant the only new in
/ stallation was the liquid chlorine ap
paratus that was recently purchased
from the Electro Bleaching Gas com
pany. This was erected ready for list
on Dec. 10 and displaces the use o
hypo-chlorite Of lime, which had beer
heretofore the only method Of proper
Is steriliZing water, in the filtration
+ process. for the publication Of waite
supplies; the effluent from the filter
without chlorination is uncertain, s.
that the adoption Of this sterilization
/ is the surest and safest method OF pro
tecting the public health against wa
ter borne diseases, particularly typhoi
fever
While the use Of hypo-chlorite 0
> lime as a colonization agent ha
proven its beneficial effects as a ster
.Iizing medium. it has afforded excel
e lent opportunity TO discover the man
3 disagreeable features encountered il
; the methods of handling and appIyin
it to the water supply to be treated
, and the available chlorine from II wa
1 only 80 per cent at best, which befor
= the European war was purchased TO
! l24 cents per pound while at the pres
3 ent time the latest quotation was
2 b cents per pound; while the liquid chic
70 Fine with the new apparatus is 10
5 per cent pure, at . cents per pount
{ with the results quicker and NOR
positive The Hqnid chlorine
= shipped il steel cylinders, each hold
! ing approximately 100 pounds Tw
9 Of these cylinders are attached to th
. feeding apparatus by means Of fexibl
d, copper tubing. and with the aid of th
: gauges and gas meter the propt
= amount Of chlorine can be applied
t the water to be treated, with no d,
2 terioration Of the plant as compare
9 with the former method