Guidance on the control of swimming pools
The guide contains a general description of swimming pools. Among other things, it describes the circulation of the water flow through the pool, automatic measurement and dosing of chlorine, reuse of used backwash water, and finally swimming pool facilities using surface water.
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Published by the Danish Nature Agency in 2013 and can also be downloaded from their website:
http://www.naturstyrelsen.dk/Udgivelser/Aarstal/2013/Svoemmebade.htm