Naslov
Disinfection byproduct formation according to type of disinfectant used

Autori
Tofant, Alenka ; Brižić, Ljiljana ; Perković, Zdravko, Venglovsky, Jan

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

Izvornik
Proceedings of 7th International Scientific Conference "Ecology and Veterinary Medicine VII." / Venglovsky J. - Košice : University of Veterinary Medicine Košice, 2008, 180-184

ISBN
978-80-8077-084-6

Skup
7th International Scientific Conference Ecology and Veterinary Medicine VII., Hygiene and Ecological Problems in Relation to Veterinary Medicine

Mjesto i datum
Košice, Slovačka, 22.04.2008. - 23.04.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
drinking water; ozone; chlorine; chlorine dioxide; disinfection byproducts

Sažetak
Results of the Petrinja-Sisak water supply system safety testing for potentially harmful disinfection by-products collected over years are presented. Open surface waterflow of the Kupa River is used by the water supply system. In the first study period (1995-1997), the physicochemical treatment of natural surface water input included only gaseous chlorine in pretreatment and in disinfection and did not include ozone. In the second period from 1998 on, pretreatment with ozone was introduced and gaseous chlorine was used as a secondary disinfectant. In the third period from 2004 on, gaseous chlorine was substituted by chlorine dioxide for disinfection and re-chlorination. The study results showed that the formation of trihalomethanes (THMs) was significant only when gaseous chlorine was used in pretreatment and as the final disinfectant. Chlorine dioxide produced little THMs, and chlorite concentration detected was below guideline values. Preozonation generally decreased THMs formation from postchlorination, either chlorine or chlorine dioxide was used as secondary disinfectant.

Izvorni jezik
Engleski

Znanstvena područja
Javno zdravstvo i zdravstvena zaštita, Veterinarska medicina

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