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SEWERAGE & SEWAGE DISPOSAL
I am indebted to (a) Mr. M. S. Hebron, B.Sc., C.Eng., M.I.C.E., A.M.I.Mun.E.,
Borough Engineer and Surveyor, and (b) Mr. A. J. Berry, B.Sc., M.I.W.P.C., M.I.Biol.,
Engineer and Manager, Mogden Sewage Treatment Works for the following reports:—
"(a) Sewerage
The programme of replacement of compressed air ejectors by electric pumps is con'
tinuing and one station in Hampton Court Road, Hampton Wick has been completed
with a further station in that road in hand. Work has commenced on a contract for
similar work on two stations in Hampton Court Road, Hampton.
The foul relief sewer in Hampton Road, Twickenham is progressing and the surface
water relief sewer for that area should be put in hand in the near future".
"(b) Sewage Disposal
Sewage for the Borough is treated at two Treatment Works of the Greater London
Council.
Kew Sewage Treatment Works receives sewage from the 11 square miles south of
the Thames, (with the exception of parts of Ham). The Works treat an average daily
flow of million gallons before discharging to the River Thames, between Kew and
Chiswick bridges.
Work commenced in 1970 on improvements to the aeration plant, in order that
treatment standards keep pace with the increasing load on the Works. These improve
ments are nearing completion and will be commissioned in early 1973.
Sewage from the remainder of the Borough flows to the Mogden Sewage Treatment
Works, which deals with some 104 million gallons per day from the whole of the former
West Middlesex area. The effluent is discharged into the River Thames at Isleworth.
An automatic pumping station at Ham commissioned in June, 1970, conveys sewage
to Mogden, and replaces the former station which pumped to Kew.
The standard of effluent as required by the Port of London Authority was maintained
throughout the year. In spite of the marginal increase in flow to the Mogden
Works, the average effective oxygen load imposed on the river by the effluent (including
storm water) was further reduced to 12.4 tonnes (metric tons) per day from 15.3 tonnes
per day in 1971".
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