The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1916-05-10
DETROIT TIM rs

bacteria In the sewage will be neees-
sary to reduce the pollution In the
river below Detroit 70 q standard
for average conditions. This can
best be done by the use OF a dis
infeetant. such as hypochlorite Of
4, Five genera. projects for sew
age treatment have been considered
la) Local shallow tanks located
disinfeetion. and cast IRON force
main through which sludge from the
* sit, {. 5s:oT . the City where, 4
tank and used for niiins low land.
CD Treatment works below the
city. either on the Detroit river or
sdjsscsnt 70 the River Rouee. with
liver al: dry weather sewage TO z
tank tank. combined with disinfection.
low lands % SrisS snd o. soi tpr for ' nss
40 q fertilizer fiier.
(c) Treatment works at Fort
Wayne and at Connors Creek above
tanks combined with disinfection. and
the necessary collecting system of
fntercepting sewers.
wssn. T asd Farv. w1rs Sa S +. l FSss
front and a future plant on Con-
nors Creek. consisting of Union
ac 70 sewers s us s S%s 'y 70 se
disposed Of by nlling low lands. or
tby incineration. or sold as ferti-
iises arsr s.,m.nt NV An. .or..,.
combined with disinfection. Treat
points. four Of them on the river
front at fou Tstrview; Orleans street
wsSns anu one nesS the hG fnter sss'
ton OF Roi,in street and Junction
avenue. with two additional future
na on on crssx Each
TO have it's own system Of intercept
Ing sewers. and screenings to be
disposed of Wy incarceration.
that Fsnsrai pfo,.ot s''cs a. and tsS
were the two most worthy OF devel-
opment. and these two are discussed
In detail in Part ~ OF this report.
ject td) and the fine screen project
(e); the former. although more ex-
pensive In first cost appears to be
the most desirable. and considering
for operation and maintenance. II Ia
also the more economical.
6. 1t Is therefore recommended
bined with disinfection be adopted
as the most economical method of
purifying Detroit sewage to a de-
gree necessary to meet all present
and future requirements.
alton adequate for "A population OF
100000. comprising works at Fort
Wayne and at Fairview. together
with the necessary system OF COZ
Letting sewers IL estimated at So
$4,000. The total annual charge. in
Guiding interest at AZ per cent,
maintenance. Is estimated at $517.-
$50 or 5i.5 cents per capita.
Il. In regard to the second part
would be justified for sewage treat
ment. IL is difficult to formulate an
answer in terms OF money acne.
However. IL is believed that. aside
from the international features OF
which would accrue from more
cleanly water front, purer water at
the bathing beaches and summer
Fairgrounds. reduction in typhoid
and other water borne diseases due
along the river front; betterment OF
raw water supplies for the munich
pa.ities below the city. and the pro-
lection OF Detroit's water from gross
sewage pollution at times when the
Detroit river flows backward, amply
Justify the expenditure required for
sewage treatment works as above
outlined. In round figures, the cost
would be about six million dollars.
and in my Judgment the expenditure
OF this sum would be JUST fiab.e.
The above replies to the specific
problems submitted, are based on the
data and detail studies presented in
Parts II, III and ~ OF this report
Respectfully submitted,
CLARENCE w. HUBBELI
Consulting Engineer.
Referred to Committee on Sewers