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35
On account of the unusual shape of the pool this necessitated
cutting off a part of the surface area which had been built up to
form a sun bathing terrace. The pool was deepened to 3 feet 6 inches
at the shallow end, to 5 feet 6 inches at the deep end in the main
pool, and 10 feet in the diving pool.
The pool is even now one of the largest in the country and
the continuous filtration plant is the largest of its kind. It is
designed to filter the water in the pool—approximately 1,300,000
gallons—in a 5, 10 or 15-hour turnover. Thus, when working at a
maximum it will filter 260,000 gallons per hour.
The sterilisation is carried out by the E.C.D. process by means
of which a salt solution is electrically connected to sodium hyposulphate
which is fed into the water before filtration, and by means
of which two parts per million of chlorine can be added to the
water without any detrimental effect to eyes, nose, mouth, etc.,
and thus maintaining safe water for bathing.
The installation of the filtration plant necessitated much
incidental work, such as concreting of the bottom of the pool,
connecting the drainage to the Borough sewage system, etc.;
and the whole work was carried out at a cost of £9,061 for incidental
works and £5,020 for the Filtration Plant.
The pool was re-opened during the first week in July, 1937.
After a few initial difficulties had been overcome, the pool contained
water which was uniformly clear, attractive and safe during
the remainder of the season.
Installation of Sun-Ray Apparatus.
In June, 1937, I submitted the following report to the Public
Health Committee:—
Reference—Council Minute 1875—May, 1937. "Resolved
that the Medical Officer of Health obtain information from
other Authorities who have installed similar apparatus and
report further thereon to this Committee (Public Health
Committee)."