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58
The final effluent is discharged into Barking Creek, a tidal
tributary of the Thames. The amount of sludge from the
precipitation tanks averages 1,300 tons per week.
Owing to the district being very flat, the main sewer on
reaching the works is situated at a very low level. This
necessitates pumping the whole of the sewage into the precipitation
tanks, and from these it has again to be pumped
on to the filter beds.
Power for this purpose is obtained by steam from the
refuse destructor, and also from an electric generator and
motors.
REFUSE DESTRUCTOR.
This apparatus is by Meldrum & Co., and is of the underfeed
type. It was installed in 1904, and consists of two threechambered
cells with flues, bye-pass, etc., to chimney.
During the year 20,147 tons of refuse were burned in the
destructor.
The heat of combustion, as stated above, is applied to the
generation of steam for pumping sewage, There are two
boilers, each capable of evaporating 7,000 pounds of water per
hour, together with feed water pumps, economisers, etc.
The above figures have been kindly furnished by the
Borough Engineer.
WATER SUPPLY.
The Borough is supplied by the Metropolitan Water
Board; the supply is of course abundant and constant, and the
quality very satisfactory.