An Improved Plan for the Construction of Works for the Treatment of Sewage and other Foul or Waste Liquids.
Year: 1891

page_text: Date of Application, 19th Oct., 1891
Complete Specification Left, 19th July, 1892-Accepted, 19th Oct., 1892
PROVISIONAL SPECIFICATION.
An Improved Plan for the Construction of Works for the Treatment
of Sewage and other Foul or Waste Liquids.
I ALBERT WOLLHEIM, Civil Engineer, of 101 Leadenhall Street, London,
E.C., in the County of Middlesex do hereby declare the nature of this invention
to be as follows :-
:-
Instead of constructing precipitation or subsidence tanks of rectangular shape,
as has hitherto been the practice, in series, I construct them in such a manner that
they converge upon a common centre radially and contiguously, the bottoms of all
the tanks having a fall towards the inner circle forming the central section of the
plan (or the inner and outer peripheries may be polygonal instead of circular).
Such inner circle is occupied by A) the outer circular or polygonal culvert for the
reception of the effluent water and B) the inner circular or polygonal culvert for
the reception of the sediment, commonly called sludge, remaining in the tanks after
precipitation or subsidence. Another culvert for the reception and conveyance of
effluent water forms the outer circle or periphery of the plan. This outer culvert
is for the reception of effluent water from continuous overflow treatment, whilst
the above described inner effluent culvert is intended only for the reception of
effluent water to be drawn off from the tanks after precipitation or subsidence.
The tanks are filled from a distributing chamber situated in the above described
central section of the plan, on top of the central culverts described under A
and B.
Some of the principal advantages of my invention over other plans for the con-
struction of similar works are:-
1) That by arranging the tanks so as to converge upon and have a fall towards
one common comparatively small central space, all the valves, penstocks, sluices,
floating arms, etc., governing the filling and emptying of the tanks both of effluent
and sludge are confined within the narrow central space above described, so that
all working operations can be managed with a minimum expenditure of time and
labour and superintendance,
2) When the tanks are worked on the continuous overflow system the enormous
spread of width of overflow, which is not reached by the ordinary plan of rect-
angular tanks, greatly increases the aëration, i.e., oxydation, of the effluent,
thereby insuring greater freedom from organic impurities remaining in solution in
the effluent.
My invention also insures other advantages the complete description of which I
reserve for the Complete Specification.
Dated this 19th day of October 1891.
ALBERT WOLLHEIM.
COMPLETE SPECIFICATION.
An Improved Plan for the Construction of Works for the Treatment
of Sewage and other Foul or Waste Liquids.
i ALBERT WOLLHEIM, Civil Engineer, of 101 Leadenhall Street, London,
C., in the County of Middlesex do hereby declare the nature of this invention
In what manner the same is to be performed, to be particularly described and
tained in and by the following statement:―
n
tead of constructing precipitation or subsidence tanks of rectangular shape, as
itherto been the case, in series, I construct them in such a manner that they
D

page_text: converge upon a common centre radially and contiguously, the bottoms of all the
tanks having a fall towards the inner circle forming the central section of the plan,
or the inner and outer peripheries may be polygonal instead of circular. Such
inner circle is occupied by A) the outer circular or polygonal culvert marked (a)
for the reception of effluent water and B) the inner circular or polygonal culvert
marked (b) for the reception of the sediment remaining in the tanks after precipita-
tion or subsidence the sludge being drawn off through the pipes (c). Another
culvert (d) for the reception of effluent water forms the outer periphery of the
tanks. This effluent culvert is for the reception of effluent water from continuous
overflow treatment, whilst the above described centrally situated culvert is
intended only for the reception of effluent water to be drawn off from the tanks by
means of the floating valves (e) after precipitation or subsidence. The tanks are
filled from a distributing chamber situated in the above described central section of
the plan, on top of the central culverts described under A) and B). On the
plan (f) is the sludge press house, (g) is the engine house, (h) is the main sewer,
(i) is an open channel joined by the pipe (k) conveying the chemicals and delivers
into the distributing chamber situated on top of (a) and (b), as previously
described.
-
Some of the principal advantages of my invention over other plans for the
construction of similar works are:
1) That by arranging the tanks so as to converge upon and have a full towards
one common comparatively small central space all the valves, penstocks, sluices, etc.
governing the filling and emptying of the tanks both of effluent and sludge are
confined within the narrow central space above described, so that all working
operations can be managed with a minimum expenditure of time and labour and
superintendence.
2) When the tanks are worked on the continuous overflow system the great
spread of width of overflow, which is not reached by the ordinary plan of
rectangular tanks, greatly increases the aëration, i.e., oxydation of the effluent,
thereby insuring greater freedom from organic impurities remaining in solution in
the effluent.
3) All the inlet and outlet valves, penstocks, sluices, etc. being centralized
around the comparatively small central space, they may be conveniently worked by
levers or other suitable gearing located on a small raised sheltered platform
situated in the very centre of the plan. Thus one person could from this shelter
not only quickly survey the working, but also most expeditiously operate any of
the valves and without being obliged to expose himself to the weather. This is of
especial advantage during night work.
Having now particularly described my said invention and the manner in which
I carry it out, I declare that what I claim is :
1) The application of the said radial system to the construction of precipitation
works of all kinds.
2) The said arrangement of all valves, penstocks, sluices, etc. around a compara-
tively small central space as described.
3.) The operating the said valves, etc. from a central sheltered raised platform
substantially as above described.
Dated this 18th day of July 1892.
ALBERI WOLLHEIM.