Offering filtration with a bacterial consortium seeded on lithothamne, coupled with UVc, some swimming pool algae remain intractable without chemistry. We were thinking of adding a copper electrolyser or a UV-Ox device. Is this allowed for ERPs?

Complete question :

We propose filtration using a bacterial consortium inoculated on Lithothamnium then coupled with UVc, but despite this, some swimming pools show a significant proliferation of algae that cannot be treated without chemistry.

We thought about installing a copper electrolyser or a device that couples UV to ozone (UV-Ox). Are these types of devices authorized for public buildings (establishments open to the public, i.e. more than 12 people). So do you know of a legal text that authorizes them in Europe (Biocidal Directive, etc.) (in order to request them at national level if necessary)?

2 answers

The 03/17/2022

Hello, to make it short there are two situations: either the swimming pool is a swimming pool, that is to say disinfected and disinfecting water (therefore de facto chlorinated), or it is an atypical bathing framed by the Order of April 2019, where any residual biocide is excluded. As your process is not residual, and a priori without residues (at least for O3), it is not prohibited from use nor subject to EU Regulation 528/2012 on biocidal products. The Ministry of Health must (after consulting ANSES) issue an MA to a bathing water treatment process: there is a reference system produced by ANSES to help you with your authorization request. https://www.anses.fr/fr/system/files/EAUX2010sa0264Ra.pdf

Best wishes

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The 03/17/2022

Maybe people will get copper hair afterwards.

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Posted on : Tuesday 17 January 2023