INTERNATIONAL AQUATIC CENTRE, SYDNEY |
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facilities with 5
pools were built - the highest standard in water quality was demanded.
In the International Aquatic Centre athletes and spectators were
to be affected as little as possible by the smell of chlorine by-products;
the clearness of the water was of special importance for brilliant
underwater photos.
In the main cleaning process ozone is used as oxidation agent. Ozone
is added for the destruction of microorganisms as well as for the
removal of viruses. Yet there should not be any residual ozone in
the pool water after the treatment. Therefore the polluting components,
which were oxidized or precipitated by the ozone, the chlorination
by-products as well as the residual ozone have to be held back by
an active carbon filter.
Then chlorination is made with NaOCl. The Grundfos Alldos equipment including
several diaphragm dosing pumps with different flow capacities between
0.3 and 50 l/h as well as foot valves, pressure retention valves
and injection units, is employed for this purpose. The Grundfos Alldos dosing
pumps add small quantities of sodium hypochlorite as a constant
disinfectant, and carry out the pH regulation as a part of the water
treatment process. The result is odorless and non-irritating clear
water, as demanded by the customer.
A look at
Customer's requirement and unusual features:
Pumps of high precision and reliability, ruggedness and durability
as well as continuous ON/OFF relay control for high process safety
Technical features:
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Several diaphragm
dosing pumps with or without electronics for the capacity
range of 0.3 to 50 l/h for the water treatment of 5 separate
pool systems with a total volume of 10 million liters. |
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Additional Grundfos Alldos
equipment: foot valves, pressure retention valves and injection
units. |
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