Improvements relating to the Disinfection of Cess-pools and the Utilization of the Disinfected Matter.
Year: 1892

page_text: Date of Application, 6th Oct., 1892-Accepted, 14th Jan., 1893
COMPLETE SPECIFICATION.
Improvements relating to the Disinfection of Cess-pools and the
Utilization of the Disinfected Matter.
I, VICTOR JUSTIN CHARLES BOULENGIER, of 98 Rue du Brochet, Gand, in
the Kingdom of Belgium, Manufacturer. do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention relates to the disinfection of cess-pools, the inodorous removal of
the fecal matter contained therein, and the utilization of this matter as a manure
for agricultural and horticultural purposes.
The object of the said invention is on the one hand the sanitary improvements of
towns and other places by neutralizing the deleterious odours emanating from cess-
pools, which in most cases are not cleaned out in time, and on the other hand the
solidification of the excrement without evaporation.
In the case of empty cess-pools the disinfection takes place at the outset by the
immediate absorption of the fecal matter entering the cess-pool. At the bottom of
the previously emptied cess-pool is provided a layer composed either of a mixture
of filamentous vegetable materials, such as heath, thistles broom, radicles from malt
houses, peat, wrack, and the like; or a mixture of detritus of wool, linen, hemp or
cotton, dried tanner's bark, sawdust and the like; or one of these absorbents only.
The thickness of this layer may be varied according to the contents of the
cess-pool.
Periodically, say once a month, a fresh layer is placed upon the last layer (an
operation which takes about ten minutes) until the cess-pool is filled with a dry and
inodorous product.
During the period of the filling of the cess-pool, from the commencement to the
end, no odour is perceptible, the ammonia being immediately absorbed.
The product thus obtained is perfectly dry and inodorous.
In the case of full cess-pools the disinfection may be effected either by
solidification or by precipitation.
For disinfecting by solidification the compound of the said substances, or one of
these, is mixed with the liquid manure until a dry consistency is obtained. The
odour disappears immediately.
When the disinfection takes place by precipitation the matter floating in the
liquid manure is caused to drop to the bottom of the cess-pool by the action of an
inodorous precipitant, such as alumina, calcium compounds, alum, or the like,
leaving the liquid which floats at the top entirely disinfected and colourless.
The removal of the fecal matter solidified in the above described manner is
effected by means of buckets. It is absolutely without odour.
For the removal of manure in the liquid and muddy state use is made of india-
rubber pipes leading into hermetically closed receptacles. The odour is scarcely
perceptible and disappears immediately during the mixing operation.
The manure thus obtained is eminently suitable for agricultural and horticultural
purposes. The proportion of nitrogen which it contains varies between two and
eight per cent. according to the process employed. Being quite inodorous and dry
it can be subjected to various manipulations.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is-
1. The disinfection of cess-pools, the precipitation of the fecal matter to the

page_text: bottom of the same, and the solidification of the excrement before removal,
substantially as and for the purposes herein set forth.
2. In the disinfection of cess-pools and the utilization of the fecal matters the
employment of an absorbent or precipitant of any kind, and the treatment of the
products thus obtained, substantially as and for the purposes herein set forth.
3. The disinfection of cess-pools and inodorous removal of the disinfected fecal
matter, substantially as herein set forth.
Dated this 6th day of October 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.