Characterization of enoxacin (ENO) during ClO2 disinfection in water distribution system: Kinetics, byproducts, toxicity evaluation and halogenated disinfection byproducts (DBPs) formation potential

Little information is available on the evolution of remaining organic matter (ROM) in a water distribution system (WDS) and its impact on the generation of disinfection by-products (DBPs). This research involves the characterization, through sample fractionation processes and experimental chlorination tests, of the reactivity of DBP precursors occurring within a WDS. The study is based on samples collected in various locations of a WDS during a complete year. For each sample, six fractions were generated to determine their potential for formation of trihalomethanes (THMs) and haloacetic acids (HAAs). Fractionation processes on ROM demonstrated that the spatial behavior of precursors for THMs differs from that for precursors of HAAs. In addition, experimental chlorination tests showed that the reactivity of the investigated fractions, in terms of DBP formation potential (DBPfp), was different from each other according to location in the WDS. DBPfp for the studied fractions changed drastically during water treatment. However, changes of DBPfp for fractions were relatively low between the beginning and the extremity of the distribution system. Since the results of this research confirm that the ability to produce DBPs is related to the nature of the fractions, they could be useful to evaluate the impact of re-chlorination on DBP formation in a WDS.

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Characterization of biofilm and corrosion of cast iron pipes in drinking water distribution system with UV/Cl2 disinfection

Water Research ◽

10.1016/j.watres.2014.04.035 ◽

2014 ◽

Vol 60 ◽

pp. 174-181 ◽

Cited By ~ 57

Author(s):

Ying Zhu ◽

Haibo Wang ◽

Xiaoxiao Li ◽

Chun Hu ◽

Min Yang ◽

...

Keyword(s):

Drinking Water ◽

Cast Iron ◽

Distribution System ◽

Water Distribution ◽

Water Distribution System ◽

Drinking Water Distribution System ◽

Drinking Water Distribution

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CHARACTERIZATION OF BIOFILMS FROM SELECTED SYNTHETIC MATERIALS USED IN WATER DISTRIBUTION SYSTEM

Journal of Ecological Engineering ◽

10.12911/22998993/67850 ◽

2017 ◽

Vol 18 (1) ◽

pp. 284-293 ◽

Cited By ~ 2

Author(s):

Izabela Biedroń ◽

Teodora Traczewska ◽

Tomasz Konieczny ◽

Grażyna Płaza

Keyword(s):

Distribution System ◽

Water Distribution ◽

Water Distribution System ◽

Synthetic Materials ◽

Materials Used

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Research on Disinfection By-Products in Water Distribution System of a Northern City

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.361-363.768 ◽

2013 ◽

Vol 361-363 ◽

pp. 768-771

Author(s):

Xin Yu Zhang ◽

Ying Fu ◽

Li Ping Qiu ◽

Yan Zhen Yu

Keyword(s):

Health Effects ◽

Distribution System ◽

Water Distribution ◽

Water Distribution System ◽

Disinfection Byproducts ◽

Water Pipelines ◽

Northern City ◽

By Products

Halogenated trihalomethanes (THMs) is a major kind of disinfection byproducts (DBPs) usually found in waters disinfected with chlorine. Because of concerns over the health effects of DBPs, the formation and change of DBPs precursors from two water pipelines in a northern city in China was investigated. Ten monitoring sites were set in water distribution system to study THMs and its composition. The results show that THMs concentration in the pipeline changed with seasons, the range was 90-212μg/L, and THMs concentration fluctuated greatly at three sites.

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