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Патент USA US2131711

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Sept. 27,’ 193$.
w. K. PORTEOUS
Y 2,131,711
SEWAGE DISPOSAL
Fil'ed Abril 2, 1957
2 Sheets-Sheet 1
I
Sept. 27, 1938.
w. K. PORTEOUS
2,131,711
SEWAGE DISPOSAL v
Filed'April 2, 1937
2 Sheets-Sheet 2_
INVENTOR
Patented Sept. 27, 1938'
. 243L111
V
I
1 , :sEwAGi: msPosAL _
j ffv‘viilia‘m King mPojrteolus, Q'if‘wickenhaiii, England,
‘
T .
assignor of‘ ?fteenpercent tdwilliam' Thomas
, vmiTo'wler', LondomEngland
_
Application April 2, 1937, Serial'N 434,511 -_
-
In GreatBritainApr-il ,6, 1936 -, >~
L'58Clayims;
(o1.‘210;2i='
'
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x
,
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7
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I
The regulations atsomelports in connection
inventionis illustrated diagrammatically‘ '
with thedischarge of ships? sewage are suclrlthat , byThe
thev accompanying'drawings,; Figure 1 showing
serious loss is occasionedto ship owners;__because one arrangemenali‘igureza modi?cation ofthe
. their vessels are unable, to enter such PQrlis un : arrangement shown in Figure _1,>_.kand Figure 3
less very stringent precautionspbe taken to obviate ‘showing a simplerl'arrangement. ,
any such discharge, and the object of the‘ present
As shown in Figure 1 ship’ssewage
led tol'a
invention is to overcome, thatdisadvantage by ' tank [1 from which, when the vessel is ,atsea, it is
providing ships with a small sewage treatment
plant which will permit compliance with such
10 regulations.
To this end, and in accordance with the inven
tion, ships’ sewage is led to a tank from which,
when the vessel is at sea, it is discharged over
board, but from which, when the vessel is in port,
15 it is delivered to a disintegrator and thence to a
centrifuge by which sludge is separated, the ef
?uent being discharged overboard, whilst the
discharged overboard, but from which, when the ,
vessel is in port, it is delivered to a disintegrator f
and thence to a centrifuge b by which sludge is
separated, the effluent being discharged over
board, whilst the sludge is discharged into one
of three vessels 0 c c, where it is heated to about
300° F. or over to coagulate and sterilize the solid
matter, and whence it is discharged through a 15
cooler 11 and stored in a tank e until an opportun
ity occurs to discharge it overboard.
sludge is discharged into, and stored in, a tank, _
The arrangement of vessels 0 c c is such that
until an opportunity occurs to discharge it over
whilst one is being charged, the contents of
board.
.
another are being heated, and those of a third are 20
If desired, the sludge coming from the disin
being discharged to the cooler d. _V
tegrator, instead of being discharged directly into,
The arrangement shown in Figure 2 is similar
and stored in, a tank, is discharged into a vessel ' to that described with reference to Figure 1 ex- .
or into one or more vof a series of vessels where it
is heated to about 300° F. or over to coagulate
and sterilize the solid matter, and whence it is
discharged through a cooler and stored in a tank, ’
until an opportunity occurs to discharge it over
board.
,
In some cases, it is preferable that the output
from the cooler should be thickened, e. g., in a
centrifuge from which the effluent is discharged
overboard, whilst the resultant sludge is conveyed
to the storage tank. Alternatively, the output
from the cooler may be conveyed direct to the
storage tank, allowed to thicken by settlement,
and the e?uent decanted and discharged over
board.
>
Preferably the vessels in which the sludge is
4 O heated are of such number and so arranged that
cept that the vessels 0 c c and cooler d are so
connected that the contents of a vessel 0,‘ instead 25
of being discharged through the cooler 01 directly
into the tank e, may be circulated through said
vessel 0 and cooler d for as long as may be desired
before being discharged to the tank e.
Figure 3 illustrates a simpler arrangement in 30
which the vessels 0 c c and cooler d are omitted
the sewage being led to the tank a from which,
when the vessel is at sea, it is discharged over
board, but from which, when the vessel is in port, _
it is delivered to the disintegrator f and thence‘ 35
to the centrifuge b by which, sludge is separated,
the e?luent being discharged overboard, whilst the
sludge is discharged into, and stored in, the tank
6 until an opportunity occurs to discharge it over
40
whilst one is being charged, the contents of
board.
another are being heated, and those of a third are .
speci?cation of my British Letters Patent No.
I claim:
1. A method of disposing of ships’ sewage which,
comprises leading the sewage to a place of stor
age, withdrawing the sewage from the latter and
420,720.
subjecting it to a disintegrating treatment, cen- ‘
It is to be observed that the plant required for
putting this invention into practice will occupy
trifuging the mass, discharging the effluent over
board, and leading the sludge to a place of stor
but small space on board ship, and to some eX-,
age.
being discharged to the cooler, the arrangement
being somewhat similar to that described in the
tent can be arranged in what is, otherwise, waste
space, as the e?iuent which can be discharged
overboard constitutes the bulk of the sewage and
that which must be stored, whilst the vessel re
mains in port, is of comparatively small volume
55 and in some cases, is sterilized.
'
2. A method of disposing of ships? sewage which
comprises leading the sewage to a place of stor
age, withdrawing the sewage from the latter and
subjecting it to a disintegrating treatment, cen
trifuging the mass, discharging the effluent over
board, heating the discharged sludge to about 300° 55
2,131,711
F., cooling the sludge, and then leading it to a
place of storage.
a
3. A method of disposing of ships’ sewage which
comprises leading the sewage to a place of stor
age, withdrawing the sewage from the latter and
subjecting it to a disintegrating treatment, cen
trifuging the mass, discharging the effluent over
board, discharging the sludge into one of a' series
of vessels in succession, heating the sludge in
sel, where it is heated to about 300° F., to coagu
late and sterilize the solid matter, cooling the '
sludge and then storing it until an opportunity
occurs to discharge it overboard.
6. A method of disposing of ships’ sewage which
comprises leading the sewage to a place of stor
age, withdrawing the sewage from the latter when
the ship is in port and subje‘cting‘it to a disin
tegrating treatment, centrifuging‘ the mass to
_ separate the sludge, discharging the e?luent over 10
10 such vessel to about 300° FL, cooling the sludge, "board whilst the sludge is discharged into one of a
and then leading it to a place of storage.
'
4. A method of disposing of ships’ sewage which
comprises leading the sewage to ,a place ofstor
age, withdrawing the sewage from the latter when
15 the ship is in port and subjecting it to a disin-'
tegrating treatment, centrifuging the mass to
separate the'sludge, discharging the'ellluent over
board whilst the sludge'is discharged into, and
‘series of vessels in succession where it is heated to
about 300° F. to coagulate and'sterilize the solid
matter, cooling the sludge and storing it until an
15
opportunity occurs to discharge it overboard.
"7. A method of disposing of ships’ sewage as
claimed in claim~5, according to which sludge is
circulated through the vessel in which it was
stored in, a tank until an opportunityloccurs to heated and through a cooler prior to being dis
charged to the place of storage.
,
20 discharge it overboard.
8. A‘method of disposing of ships’ sewage, as
5. Amethod‘of disposing of ships’ sewage which
comprises leading the sewage to'a place of stor ' claimed in' claim 6, according to which sludge is
age, withdrawing the sewage from the latter when circulated through the vessel in which it was
the ship is in port and subjecting it to a disin ' heated and through a cooler prior to being dis
tegrating treatment, centrifuging the mass tov charged to the place‘ of storage.
separate the sludge, discharging the e?luent over-.
board whilst the sludge is discharged into a ves
WILLIAM
PORTEOUS.
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