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I am grateful to the Borough Engineer for the following
information:-
The Swimming Pools operated by the Borough of Edmonton Baths
Department comprise
Open Air Pool
Situated Houndsfield Road, adjacent to Jubilee Park. Immediate
surroundings park land and residential area. Operates annually,
15th May to 15th September.
Dimensions - 150 ft. x 100 ft. Depth ranging from 3 ft. to
7 ft. 9 ins. Capacity, 500,000 gallons. Rate of turnover
6 hours. Aeration by cascade.
Indoor Baths
Situated Knights Lane, Establishment houses two pools each
90 ft. x 30 ft. depth ranging from 3 ft. 6 ins. to 6 ft. 6 ins. Capacity
90,000 gallons each pool. Rate of turnover 4 hours. Two pools operate
for swimming during Summer. One pool operates for swimming during Winter.
Aeration by Air Compressor. The information concerning operation of plant
controlling condition of water is common to both establishments.
Source of Water - Town Main. (Lea Valley).
Treatment - Pressure Filtration. Continuous circulation. Filter
beds washed according to demand, at least one wash per week
during the winter, two washes per week during the summer. Wash
water taken from pools and discharged to waste and replaced from
Town Main, (approximately 15,000 gallons Knights Lane. 30,000
gallons Open Air Pool, each operation).
Chlorination - By W. & T. A 303 Chlorinator maintaining as near
as possible 2 ppm free chlorine.
Alkali infusion - A solution of Sodium Carbonate is infused into
the filtrate by automatic chemical doser which operates in conjunction
with the chlorinator maintaining approximately 7.6 to
7.8 ph.
Flocculation - Alluminium Sulphate is added manually to the
strainer in the filter line for this purpose. Arrangements are
made to install positive feed solution pumps in the near future.
Tests - Tests for Free and Combined Chlorine are made by Palin
D.P.D. method and for P.H. using Bromothymol Blue or Diphenol
Purple. Lovibond comparators with standard fixed colour discs
for these tests which are made four times daily.
Laboratory Bacteriological and Chemical tests are made periodically
throughout the year.
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