Improvements in or relating to the Bacteriological Purification of Sewage.
Year: 1898

page_text: Date of Application, 1st Mar., 1898
Complete Specification Left, 1st Dec., 1898-Accepted. 7th Jan., 1899
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Bacteriological Purification
of Sewage.
I, WILLIAM DUNDAS SCOTT-MONCRIEFF, of 14, Victoria Street, Westminster,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has relation to certain improvements in or relating to the
bacteriological purification of sewage.
The novel & important part of my present invention is the utilising of the
bacteriological effluent itself as a diluting and oxidising agent whenever the
standard of available oxygen contained in it is high enough to justify its use for
this purpose.
Dated this First day of March 1898.
Improvements in or relating to the Bacteriological Purification
of Sewage.
I, WILLIAM DUNDAS SCOTT-MONCRIEFF, of 14, Victoria Street, Westminster,
Engineer, 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:-
-
This invention has reference to certain improvements in or relating to the
purification of sewage bacteriologically and has for its special object the provision
of means for aiding the nitrification of the organic matter contained in it.
To effect this I utilise the nitrified effluent such for instance as comes from the
apparatus described in the Specification of my Patent No. 18555 of 1897 by
allowing it to flow into and through tanks or ponds so that the effluent as it flows
through the same becomes diluted by the liquid already contained in such tanks
or ponds with the result that the mineralisation of the organic matter goes on by
means of the oxygen available in the nitrates so as to yield a higher and more
uniform standard of purification at the final point of discharge.
When advisable to do so, as for instance when dealing with very strong sewage
I use the final effluent or nitrified filtrate for tne dilution of the hydrolised effluent
which comes
over from the anaerobic fermentation such for instance as that
obtained from "cultivation tanks as described in my Patents Nos. 14181 of 1891
and 17006 of 1892: For this purpose I mix any suitable quantity of the nitrified
وو

page_text: filtrate (as estimated by the results obtained) with the said hydrolised effluent
immediately before the latter is discharged over or into any filtering apparatus
designed to obtain nitrification of nitrogenous polluting organic matter.
I do not confine the process above described to any particular form of apparatus.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
-
1. In the bacteriological purification of sewage the running of the nitrified
filtrate into and through tanks or ponds for the purpose of obtaining a higher and
more uniform standard of purification at the point of final discharge.
2. In the bacteriological purification of sewage, diluting the hydrolised effluent
obtained from any anaerobic fermentation, with the nitrified filtrate from any
filtering apparatus designed to obtain nitrification of nitrogenous organic polluting
matters.
Dated this 1st day of December 1898
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.