Assessment of Halonitromethanes Formation Potentials Under Different Disinfection Scenarios in Low SUVA Water
The main objective of this project is to investigate the formation of halonitromethanes, an emerging class of disinfection by-products (DBPs) identified in drinking waters in recent years, which are currently unregulated but highly toxic. Halonitromethanes formation potentials tests were investiga...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Artvin Coruh University
2022-07-01
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| Series: | Doğal Afetler ve Çevre Dergisi |
| Subjects: | |
| Online Access: | http://dacd.artvin.edu.tr/tr/download/article-file/2206813 |
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| Summary: | The main objective of this project is to investigate the formation of halonitromethanes, an emerging class of disinfection by-products
(DBPs) identified in drinking waters in recent years, which are currently unregulated but highly toxic. Halonitromethanes formation
potentials tests were investigated under five different disinfection conditions in Egirdir Lake with low specific ultraviolet absorbance
(SUVA) value. The results showed that ozone/chlorine formed the highest halonitromethanes followed by in the order of
ozone/chloramine and chlorine only. When chloramine or ozone were used alone, the halonitromethanes concentration was below the
minimum detection limits. The highest halonitromethanes was determined 2.5 µg/L for ozone /chlorine scenario and the lowest
halonitromethanes concentration was 1.7 µg/L in ozone /chlorine scenario. In the ozone/chlorine scenario, a dramatic decrease for
halonitromethane formation was detected from spring to winter. Chloropicrin has been the only measurable halonitromethanes species.
In the correlation analysis between halonitromethanes and water quality parameters, the highest correlation was found between
halonitromethanes and dissolved organic nitrogen. Besides dissolved organic nitrogen, different organic/inorganic compounds and
disinfectants also contribute to the formation of halonitromethanes. These results can be used to control the formation of N-DBPs in
the disinfection of low SUVA waters.
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| ISSN: | 2528-9640 |