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The sludge runs from the precipitating tanks by its own gravity into a
sludge store, from which it is forced into the filter press by compressed
air. Owing to the Trade Refuse discharged from the Margarine
Works, we have had considerable difficulty in dealing with the sewage
on account of the quantity of fatty matter in it, and it has from time
to time clogged the filters to such an extent as to prevent filtration,
and an action at law is now pending against the proprietor of that
manufactory for breach of his agreement with the Council.
The sewage from the County Asylum flows into two large
reception tanks, from whence it is pumped by centrifugal pumps into
precipitating tanks, and is treated similarly to the above. During the
year 40,150,000 gallons have been pumped.
The following works have been carried out by the Council's
workmen, viz. : the ditch at the north-east end of the Farm has been
levelled and half carriers laid down and the sides concreted.
The second filter has been filled with coke breeze, an outlet
spreader made and fitted to pipe, and carriers laid for the purpose of
delivering the sewage evenly over the filter. A dwarf concrete wall
has been constructed round the bank near the precipitating tanks, and
3 flights of steps built.
The carriers to the Asylum precipitating tanks have been repaired
and made good with cement and concrete.
The pen-stocks on the farm have been thoroughly overhauled and
and where defective have been renewed or repaired as the case may be.
The banks round the new filter beds have been levelled and sown with
grass seed, and a flower bed made; also a gravel path formed to the
Brent.
A concrete pit has been constructed for receiving the rakings of
the inlet chambers and deposits in the catch pit.
A doorway has been cut in the press room to enable the man to
have direct control over the pressing machinery.
Pumping Account.
Gallons. Gallons per day. Average number of hours employed.
40,150,000 110,000 56½ hours per week.
The cost of the works and pumping, including labour in swillingout
tanks, pressing, &c., is as follows:—
£ s. d.
Labour 306 16 6
Coal, Coke, etc., 58 2 2
Oil, Waste and Packing 12 0 7
Repairs, Tools, &c 27 6 11
Total £404 6 2