Wichita daily eagle. [volume] (Wichita, Kan.) 1884-1886, 1885-10-14
TREATMENT OF LONDON SEWAGE.
VIA; Ii l. Estimated To he Worth rlans
for Its Disposal

Z; hs. Teen computed that tho annual
-alrc of LONDON sewage amounts to ) sEi.-
.in-s and 3 pence per individual, and. eSti-
inaiin. the population at 40O0, COS rGr,oa-,
ii, total vllgs " ,ul / bs more than IS UJ1-
coo Jcr anuCm. Il would thus appear, on
the lace OF il, that in some way or other
this sum SHOULD be savel for the city
llero are two ways Of deriving profit from
sewage. One is by the APPLICATION OF
,ewaE. e. land. "a. for instance. J.
dous n Pullman. Ills, or from treat
mert by chemical processes. Precedent
for the first plan exist in Great Britain, tie
mere notable ones being in Edinburgh AMI
Doaca. ter: but from neither ot these could
tie ammi>sirRers derive sufficient encour-
.cement 20 infer that the pumping AMI
other expen-cs would no. cancel sill OF the
possible profit. The seconi plan l. re-
gariei As Vet more unfavcrasiy. for the
"availabie material value OF the -cwa-e Is
at present to small to admit O: obtaining
from it any proiuct which can be sold at
ANYTHING like the cost Il its production
With reference 70 the plans for the treat
ment OF Ito metropolitan sewage, four posi-
de .chemes are presented AM Analysed
These are broad irrigation. filtration through
land, processes q deposition or precipitation.
and precipitation supplemented by applica-
ton 20 land. The tes,im ny seems 10 -
quite decisive sni Uniform that Tor every
leo pcrsons one acre wouii tie needed IN
broad lit .ation. and that tGs sewss sc should
he trained OF purified .efor. permitted u
finally pass upOn tbs surface az the lani
F; When il is remembered that "a. t0e acres are
| equal 70 about >.xty-two square miles. the
/ impTac;icatilitv q this scheme Is apparent,
/ Tor no such farming ares can lie found IN
/ The neighborhood Of London
Tie method which meets With the create {
favor from the commission is the las; one
mentioned The chief advantage j. that the
| sewage Is thereby much more thoroughly
| deprived u its noxiop' qualities Tie pro
cess is found in actual use IN birmingham,
and Is described as follows; The sewage
| Is treated with line and allowe,! 70 deposi,
| in . series @: large tanks: the clarified
! liquid IS thea passed through porous
land. after which II runs into the
river. being found perfectly lnnocuous
/ The sludSe deposit, which amounts TO -
tons d.y. is allowed TO run in its semi-
| fluid state upon a portion Of the lsni Land
| ont to receive Il. after which il i dug INFO
III. croun! which Is covered VITA soil,
PLANTED. croppei and used for filtration
! one acre ucr week Is allotted for this par-
pose. and the land 20 used remains :or three
! wears tefore a sluise Is put upon !, again.
Thus the quantity Of land required Tor tas
! dispo<a. OF the sluiSe would be % acres
Such a system meets the chief difficulties
Il does not require the large AREA demanded
fer broad irrigation, and it clariaes the hlia
which is now poll1ting the Thames even up
20 the bridge. Tie history Of London saw
eraSe experiment coaclusively shows ina.
city has not solved the problem when It rs
even devised a method for drawing on II
drainage. Ths tsrmini must b considered
a. well IS the lines OF trapeccTtatios-