Naslov
The Water Quality in the Public Supply Water in Permanently vs. Seasonally used Water Supply Systems

Autori
Rakić, Anita ; Foglar, Lucija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Recent Advances in Engineering Proceedings of the 3rd European Conference of Chemical engineering / Dmitriev, A. ; Camarinhas, C. L. - : WSEAS Press, 2012, 46-51

ISBN
978-1-61804-137-1

Skup
3rd European Conference of Chemical engineering

Mjesto i datum
Pariz, Francuska, 02.12.2012. - 04.12.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Legionella spp.; copper; iron; manganese; zinc; water distribution systems.

Sažetak
Legionnaires disease continues to be a public health problem especially in hotels. The aim of this study was to estimate Legionella spp. colonization risk in hotel water distribution systems (WDS) and to determine the difference in Legionella presence between the all year-round open hotel and seasonal hotel (open only during the summer months) in an attempt to identify risk factors for Legionella spp. colonization in the Split Dalmatian County, Croatia. For that purpose, the iron, manganese, copper and zinc concentrations were monitored in 159 hot water samples taken from 2 hotels in the period from January 2009 to January 2012. The concentrations of metal ions and the presence of Legionella spp. were determined by AAS and by the BCYE agar cultivation method, respectively. The detailed statistical analyses of water quality monitoring results as well as analyses of the dependence between permanent and seasonal opened systems were performed and the seasonal variations of Fe, Zn, Mn and Cu in those WDS were observed and correlated with Legionella presence. Differences in metal concentrations between the seasonal and year-round accommodation facilities were evident, and metal concentrations were generally higher in the seasonal hotel. Legionella spp. was isolated in 24 out of 77 hot water samples (31.2%) in hotel open only during the summer months and in 24 out of 82 samples (29.3%) in the all year-round open hotel. WDS in hotels can be heavily colonized by Legionella spp. and may present a risk of Legionnaires´ disease for tourists. Higher concentrations of heavy metals observed in samples from hotel open only during the summer were in accordance with the corrosion of the metal piping system and with the reduced water flow in seasonal systems, which favoured conditions for the growth and breeding of Legionella spp.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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