An Improved Process for Deodorizing, Disinfecting, Precipitating, Drying, and Pulverizing the Solid Portions of Sewage.
Year: 1889

page_text: Date of Application, 11th Apr., 1889
Complete Specification Left, 11th Jan., 1890-Accepted, 15th Feb., 1890
PROVISIONAL SPECIFICATION.
An Improved Process for Deodorizing, Disinfecting, Precipitating,
Drying, and Pulverizing the Solid Portions of Sewage.
I WILLIAM ASTROP of 5 Queen Anne's Avenue, South Tottenham, in the County of
Middlesex, Chemist, do hereby declare the nature of my said invention to be as
follows:-
--
The object of this invention is after abstracting the greater bulk of liquid from the
solid sewage sludge or the excreta collected from cesspools or other suitable receptacles
to render it more convenient for the further manipulation in the process of drying and
pulverizing as described in my patents dated September 5th 1884 No. 11901 and also
August 5th 1886 No. 10047:-in carrying out my invention I provide any required
number of vacuum boxes or tanks of larger dimensions than mentioned in my previous
patents for the purpose of getting a greater exhausting power for abstracting the liquid
by atmospheric pressure.
I have found it more convenient and effectual to reduce the solid to a cake like
substance by passing between a series of squeeze roll which must be worked in pairs,
each top roll will work on the top of the wire and the bottom rolls to work under the
wire or felts; thereby squeezing superfluous liquid into the vacuum boxes or tanks to
be carried away by the exhaust pipes. The effect of these rolls will be to pick up the
solid matter off the top of the wire or felts, thus preventing the solid from filling up
the meshes of the wire or felts so that each pair of rolls will take out a considerable
quantity of liquid which is passed on by means of the wire or felts to the couch rolls
as described in my Patent No. 11901. I also place in some convenient position
above the wire or tray or sifter made of wire gauze woven horse hair or other suitable
material, to which is applied a shaking motion for the purpose when required, to mix
with the said sewage and the like some dry refuse such as cinders, road sweepings,
calcined vegetables or animal matters bone dust and suitable chemicals for the purpose
of enriching the said manure and getting rid of Town refuse.
7000
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Process for Deodorizing, Disinfecting, Precipitating,
Drying, and Pulverizing the Solid Portions of Sewage.
I WILLIAM ASTROP, of 5 Queen Anne's Avenue, South Tottenham in the County of
Middlesex, Chemist, do hereby declare the nature of my said invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
The object of this invention is after abstracting the greater bulk of liquid from the
solid sewage sludge or the excreta collected from cesspools or other suitable receptacles
to render it more convenient for the further manipulation in the process of drying and
pulverizing as described in my Patents dated September 5th 1884 No. 11,901 and also
August 5th 1886 No 10047; in carrying out my invention I provide any required
number of vacuum boxes or tanks of larger dimensions than mentioned in my previous
Patents for the purpose of getting a greater exhausting power for abstracting the
liquid by atmospheric pressure.
"I have found it more convenient and effectual to reduce the solid to a cake-like
substance by pressing between a series of squeze rolls, which must be worked in pairs,
each top roll will work on the top of the wire and the bottom rolls to work under the

page_text: wire or felts; thereby squeezing superfluous liquid into the vacuum boxes or tanks to
be carried away by the exhaust pipes. The effect of these rolls will be to pick up the
solid matter off the top of the wire or felts, thus preventing the solid from filling up
the meshes of the wire or felts: so that each pair of rolls will take out a considerable
quantity of liquid which is passed on by means of the wire or felts to the couch rolls
as described in my patent No. 11901. I also place in some convenient position above
the wire or tray a sifter made of wire gauze woven horse hair, or other suitable
material to which is applied a shaking motion for the purpose when required to mix
with the said sewage and the like some dry refuse, such as cinders, road sweepings,
calcined vegetables or animal matters, bone dust and suitable chemicals for the purpose
of enriching the said manure and getting rid of Town refuse.
Having now particularly described and ascertained the nature and object of my said
invention and in what manner the same is to be performed I declare that what I
claim is :-
The improved process for deoderising, disinfecting, precipitating drying and pul-
verizing the solid portions of sewage substantially as hereinbefore described.
T
1000
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.