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11
Works at Anchor Bay. No ejectors are required 011 the
second portion, as there is a very good fall throughout
the whole length of the sewer.
The Sewage Outfall Works is situated at Anchor
Bay at the eastern end of the district, and after treatment
by septic tanks, aeration beds and percolating
filters, the effluent is discharged into the River Thames.
There are 6 percolating filters with revolving distributors.
The plant at the Outfall Works consists of: —
1 50 h.p. gas engine working air compressor.
2 45 h.p. motor electrically driven air compressors.
2 6-in. and 1 4-in. electrically driven centrifugal
pumps for lifting effluent from the septic
tank to the filters, and
"Pressure gas" producing plant in duplicate
for working the gas engine.
The effluent is discharged at low tides into the
River Thames; the sludge left is placed in sludge
lagoons of which there are five, and allowed to dry. It
is then dug out and carted away for use by farmers and
allotment holders.
The Port of London Authority periodically takes
samples of the effluent from these works for analysis,
but for many years past there has been no complaint
made as to the character of the effluent discharged into
the River Thames.
There are now very few houses left connected to
the old brick sewer which discharges on the foreshore of
the river, and the sewer is mainly used for surface water
drainage.
There are a number of houses built on the marsh,
near Belvedere Station, and on the high ground at
Abbey Wood, which are drained into cesspools, owing to
there being no sewer available. These cesspools on the