Datensatz

Veröffentlichung Informationen

Titel

Hygienic quality of public natural swimming pools (NSP)†

Kurzbeschreibung

† This work describes the in-situ (water treatment inside the pool) and ex-situ water treatment (water treatment via external water treatment plants) of NSP, and the influence of zooplankton in existi

Zusammenfassung

Natural swimming pools (NSP) have become more popular in the past 20 years, both for private and public use, but their hygienic status remains a matter of discussion. Elimination rates in NSP are well defined for Escherichia coli, enterococci and Pseudomonas but a lack of knowledge exists regarding elimination rates in NSP concerning the parasitic protozoans Giardia and Cryptosporidium. First studies indicate that in-situ zooplankton filtration proved to reduce these protozoans efficiently: the in-situ elimination of Cryptosporidium is dependent on the population of zooplankton. In the 50% percentile the elimination rate is four times faster than in the chlorinated pool. The ex-situ elimination of Cryptosporidium in an NSP is approximately 10% faster than in a chlorinated pool. In ex-situ treatment of NSP the elimination rate reached 2 log-steps versus 1 log-step in chlorinated pools. For the further development of NSP for the best possible hygiene and health status some elementary questions, stated in this paper, will have to be solved in the next years or decades

Verantwortlicher Verband

DGfnB

Kategorie

Fachartikel, Präsentation

Suchbergriffe

Algen, Plankton

freie Suchbegriffe

| Cryptosporidium, Giardia, in-situ disinfection, natural swimming pools, NSP

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hygienic_quality_of_public_natural_swimming_pools.pdf