Photocatalysis and Blue Light in Swimming Pools Delay Corrosion in Concrete and Metal Parts and Improve Indoor Air Quality
By: Folke Björk and Tord Af Klintberg
References
- Sadi, M: “Research on Roman bathing: old models and new ideas”. Revue Belge de philologie et d’histoire, Vol 90, No.1, p. 143, 2012.
- Sweden Hearald: “Closing Swimming Pools Threatens Children’s Swimming Skills” 2025, https://swedenherald.com/article/swimming-pool-closures-threaten-childrensswimming-skills.
- Deutsche Gesellschaft für das Badewesen e.V: “Bäderatlas”. 2026 [cited 2026 February 9 2026], https://www.baederatlas.com/. (In German).
- Barna Z & Kádár M: The risk of contracting infectious diseases in public swimming pools. A review”, Ann Ist Super Sanità, Vol 48, p. 374, 2012.
- Bagnall H, Chalmers R.M, Henderson M, Sorrell, S, Robinson, G.; Elwin K & Dolan G: “Swimming Pool-Related Outbreak of a Rare gp60 Subtype of Cryptosporidium hominis, England, October 2011”. Water, Vol. 13, p. 3152, 2021.
- Carter B.L, Chalmers R M & Angharad P: “Health sequelae of human cryptosporidiosis in industrialised countries: a systematic review”. Parasites Vectors, Vol. 13, p. 443, 2020.
- Sinclair R G, Jones E L & Gerba C P: “Viruses in recreational water-borne disease outbreaks: a review”. Journal of Applied Microbiology, Vol. 2009/0008, p 1769, 2009.
- Kamihama T K, Kimura T, Hosokawa J-I, Ueji M, Takase T & Tagami T, “Tinea pedis outbreak in swimming pools in Japan”. Public Health, Vol 111, p. 249, 1997.
- Swedish Public Health Authority, “Guidance document for pool baths” (“Vägledning om bassängbad”). 2023. (In Swedish).
- Amin R, Brijesh B,; Hamblin, M R & Dai T, “Antimicrobial Blue Light Inactivation of Pseudomonas aeruginosa by Photo-Excitation of Endogenous Porphyrins: In Vitro and In Vivo Studies”. Lasers in Surgery and Medicine, Vol. 48, p. 562, 2016.
- Schäfer A Hauke H & Zehnder A J B: “Bacterial Accumulation at the Air-Water Interface”. Environ. Sci. Technol, Vol. 32, p. 3704, 1998.
- Marshall K C, & Cruickshank R II: “Cell Surface Hydrophobicity and the Orientation of Certain Bacteria at Interfaces”. Arch Mikrobiol., Vol. 91, p. 29, 1973.
- Oesterholt F, Traksel D & Keuten M: “Review of alternative disinfection technologies for municipal swimming pools in the Netherlands”. In Swimming Pool and SPA international conference, London 2009, paper 3.1.
- Karataev O R, Novikov V F, Sayakhov R I & Karataeva E S: “Formation of byproducts during water chlorination as a result of corrosion of elements of the mechanical system”. In IOP Conference Series: Materials Science and Engineering. 2020, Vol 915. IOP Publishing Ltd. 2020.
- Zarzoso M, Liana S, Perez-Soriano P: “Potential negative effects of chlorinated swimming pool attendance on health of swimmers and associated staff”. Biology of Sport, p. 233, 2010.
- Teo T L L, Coleman H M & Khan S J: “Chemical contaminants in swimming pools: Occurrence, implications and control”. Environment International,. 76: 2015, p. 15.
- Stichel W: “Corrosion behaviour of galvanized and stainless steel as well as nickelbase-alloys in the atmosphere of indoor swimming pools”. Werkstoffe und Korrosion, Vol. 50, No 3, p. 131, 1999.
- Szala M K, Beer-Lech K & Walczak M: “A study on the corrosion of stainless steel floor drains in an indoor swimming pool”. Engineering Failure Analysis, Vol. 77, p. 31, 2017.
- Schäper M: “Durability of reinforced and prestressed concrete constructions exposed to air and water of swimming pools”. Beton- und Stahlbetonbau, Vol. 106, No 7, p. 459, 2011.
- Faller M & Richner P: “Material selection of safety-relevant components in indoor swimming pools”. Materials and Corrosion, Vol 54, No 5, p 331, 2003.
- Teknikmarknad: “Aquatic centres for the future” (“Framtidens simhallar”) . https://www.teknikmarknad.se/fralar, 2026. (In Swedish).
- Wikipedia in Swedish: “Västertorp aquatic- and sports center” (“Västertorps sim- och idrottshall). (In Swedish) 2026, URL: https://sv.wikipedia.org/wiki/V%C3%A4stertorps_sim-_och_idrottshall.
- City of Stockholm website: “The aquatic centers” (Simhallarna), 2026. (In Swedish). URL: https://motionera.stockholm/trana-gymma-simma/simhallarna
- Blygold website: “Blygold AOT-Aqua+ Legionella preventive”. 2026. URL: https://www.blygold.nl/diensten/meten-inspectie-advies/water/
- Wang C, Liu H & Qu Y: “TiO2-based photocatalytic process for purification of polluted water: Bridging fundamentals to applications”. Journal of Nanomaterials, Article ID 319637, 2013.
- Almemark M, Bergström R, Fridén H, Junestedt C, et al. “Active aquatic centers” (Aktiva badhus) (in Swedish), Swedish environmental research institute, Report B2231, 2015, URL: https://urn.kb.se/resolve?urn=urn:nbn:se:ivl:diva-2958.
- UVTao Yuang, LED lamps 405 nm. 2026; URL: https://www.ledwv.com/.
- Andersson R: “Water Treatment Technical Handbook Bath 2023”, (Vattenbehandling Teknisk Handbok Bad 2023), ( In Swedish), Svenska Badbranschföreningen. URL: https://svenskabadbranschen.se/app/uploads/2025/04/Tekniska-Handbok-Bad-Vattenbehandling.pdf
- Fölster J & Rönnback P: “Turbidity as a measure of suspended material and total phosphorus”, (“Turbiditet som mått på suspenderat material och totalfosfor”), 2015. (In Swedish), Swedish University of Agricultural Sciences, Vatten och miljö: Report 2015:2. 2015, URL: https://pub.epsilon.slu.se/14620/7/folster_j_ronnback_p_171012.pdf
- McKay G, Sjelin B, Chagnon M, Ishida K P & Mezyk S P: “Kinetic study of the reactions between chloramine disinfectants and hydrogen peroxide: Temperature dependence and reaction mechanism”. Chemosphere, Vol 92, p. 1417, 2013.
- Koeck D E, Huber S, Hanifi N & Köster M: “Occurrence of Antibiotic-Resistant Bacteria in Therapy Pools and Surrounding Surfaces”. Int. J. Environ. Res. Public Health Vol 15, p 2666, 2018.
- Wastensson G & Eriksson K: “Inorganic chloramines: a critical review of the toxicological and epidemiological evidence as a basis for occupational exposure limit setting”. Critical Reviews in Toxicology, Vol 50 No 3, p. 219, 2020.
- Eriksson K, Graff P, Johannesson S & Wastensson G: “Chloramines and exposure in aquatic centers” (“Kloraminer och exponering i badhus”). (In Swedish), Swedish Work Environment Agency, Report in 2015:16, 2015. URL: https://www.av.se/globalassets/filer/publikationer/kunskapssammanstallningar/kloraminer-och-exponering-i-badhus-rap-2015-16-kunskapssammanstallning.pdf?hl=trikloramin
- Schuhmacher-Wolz U. & Kaberlah F: “Collection of materials and draft text for the derivation of short-term guideline values for trichloramine in indoor air”, (“Stoffsammlung und Textentwurf für die Ableitung von Kurzzeit-Richtwerten für die Innenraumluft für Trichloramin”). Forschungs- und Beratungsinstitut Gefahrstoffe GmbH Klarastr. 63 79106 Freiburg, 2011. (In German). URL: https://www.umweltbundesamt.de/system/files/medien/pdfs/fobig_tca_innenraumluft.pdf
- Holzwarth, G. Balmer R G, & Soni L: The fate of chlorine and chloramines in cooling towers Henry’s law constants for flashoff”. Water Research, Vol. 18, No. 11. p. 1421, 1984.
- Hery M. Hecht G, Gerber J M, Gender J C & Hubert G: “Exposure to chloramines in the atmosphere of indoor swimming pools”- Annals of Occupational Hygiene, Vol 39, No 4, p. 427, 1995.
- European Commission: Directorate-General for Employment, Social Affairs and Inclusion: “Non-binding guide to good practice for implementing Directive 2006/25/EC Artificial Optical Radiation”. Publications Office of the European Union, 2011, URL: https://data.europa.eu/doi/10.2767/31812.
- Brueckner R, Wright D, Atkins C & Lambert P: “Cathodic protection for the remediation of swimming pools”. Proceedings, 5th International Conference on Concrete Repair. CRC Press/Balkema, 2014.
- Jeffrey R. & Boulton L: “The corrosion of stainless steel components in aggressive water environments”. In Corrosion and Prevention 2016, Australasian Corrosion Association, 2016.
- Maurath T: “Stress corrosion cracking caused a swimming-pool disaster”. Schweissen und Schneiden/Welding and Cutting, Issue 7, p. E120, 1989.
- Salter C & Langhus D L: “The Chemistry of Swimming Pool Maintenance”. Journal of Chemical Education, Vol 84, No 7, p. 1124, 2007.
- Yang L, Chiang K T, Yu H, Pabalan R T, Dasgupta B & Ibarra L: “Threshold chloride levels for localized carbon steel corrosion in simulated concrete pore solutions using coupled multielectrode array sensors”. Corrosion, Vol 70, No 8, p. 850, 2014.
- Horiguchi K, Yamaguchi T, Maruya T & Takewaka K: “Study on the method of measuring the chloride threshold value of corrosion and estimation of the values in durability design of concrete structures”. Journal of Advanced Concrete Technology, Vol 18, No 10, p. 571, 2020.
- Blair R, Pesic B, Kline J, Ehrsam I & Raja K: “Threshold chloride concentrations and passivity breakdown of rebar steel in real concrete solution at different pH conditions with the addition of glycerol”. Acta Metallurgica Sinica (English Letters), Vol. 30, No 4, p. 376, 2017.
- Sliney D H, Bergman R & O’Hagan J: “Photobiological Risk Classification of Lamps and Lamp Systems—History and Rationale”. LEUKOS The journal of the Illuminating Engineering Society of North America, Vol. 12, No 12, 2016, p. 213, 2016.
Language: English
Page range: 93 - 112
Submitted on: Mar 30, 2026
Accepted on: Jun 21, 2026
Published on: Jun 30, 2026
Published by: Nordic Concrete Federation
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year
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© 2026 Folke Björk, Tord Af Klintberg, published by Nordic Concrete Federation
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.