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16
The increased storage capacity of these tanks will
enable the Works to deal much more efficiently with any
sudden flow of sewage. These tanks are divided by concrete
walls, on which is an open channel divided by sluice
doors, so that either one, two, three, four, or five tanks can
be worked at the same time or alternately, as required.
The overflow from the tanks first passes out of the tanks
into an open channel, then into the first Contact Bed, and
through the filter or second Bacteria Beds into an effluent
chamber, and thence into the brook referred to above.
Floating outlet arms have now been fixed to all the
settling tanks,
A permanent carrier has been constructed between the
old and the two new filters.
The Engineer and Surveyor has had a portion of the
laud used for sludge disposal laid on in lagoons, and the
sludge is run into these in turn, forming a fair mould on
what was originally stiff clay and enabling the land to be
turned into allotments.
Samples of sewage effluent have been taken from time
to time by the M.C.C. and the Lea Conservancy, the control
samples of which have been analysed by Professor Kenwood
with most satisfactory results.
I would advocate that the planting of trees round these
Works should be continued as suggested by the Engineer
and Surveyor.
The roads in this District have separate sewers for
storm water, and all houses except the older ones have
the dual system of drainage.
An endeavour is being made to carry the storm water
from the old houses into the surface water sewers, as opportunities
occur.
This is very necessary, as everything should be done to
make the flow of sewage at any sewage works as uniform as
possible.
The sewage from the Avenue and Ely Place section of