Photolytic removal of DBPs by medium pressure UV in swimming pool water

Kamilla Marie Speht Hansen, R. Zortea, A. Piketty, S. Rodriguez Vega, Henrik Rasmus Andersen

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Abstract

Medium pressure UV is used for controlling the concentration of combined chlorine (chloramines) in many public swimming pools. Little is known about the fate of other disinfection by-products (DBPs) in UV treatment. Photolysis by medium pressure UV treatment was investigated for 12 DBPs reported to be found in swimming pool water: chloroform, bromodichloromethane, dibromochloromethane, bromoform, dichloroacetonitrile, bromochloroacetonitrile, dibromoacetronitrile, trichloroacetonitrile, trichloronitromethane, dichloropropanone, trichloropropanone, and chloral hydrate. First order photolysis constants ranged 26-fold from 0.020 min− 1 for chloroform to 0.523 min− 1 for trichloronitromethane. The rate constants generally increased with bromine substitution.

Using the UV removal of combined chlorine as an actinometer, the rate constants were recalculated to actual treatment doses of UV applied in a swimming pool. In an investigated public pool the UV dose was equivalent to an applied electrical energy of 1.34 kWh m− 3 d− 1 and the UV dose required to removed 90% of trichloronitromethane was 0.4 kWh m− 3 d− 1, while 2.6 kWh m− 3 d− 1 was required for chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes ranged from 0.6 to 3.1 kWh m− 3 d− 1. It was predicted thus that a beneficial side-effect of applying UV for removing combined chlorine from the pool water could be a significant removal of trichloronitromethane, chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes.
Original languageEnglish
JournalScience of the Total Environment
Volume443
Pages (from-to)850–856
ISSN0048-9697
DOIs
Publication statusPublished - 2013

Cite this

@article{f1665fce4447472a9f4aff6b05e03540,
title = "Photolytic removal of DBPs by medium pressure UV in swimming pool water",
abstract = "Medium pressure UV is used for controlling the concentration of combined chlorine (chloramines) in many public swimming pools. Little is known about the fate of other disinfection by-products (DBPs) in UV treatment. Photolysis by medium pressure UV treatment was investigated for 12 DBPs reported to be found in swimming pool water: chloroform, bromodichloromethane, dibromochloromethane, bromoform, dichloroacetonitrile, bromochloroacetonitrile, dibromoacetronitrile, trichloroacetonitrile, trichloronitromethane, dichloropropanone, trichloropropanone, and chloral hydrate. First order photolysis constants ranged 26-fold from 0.020 min− 1 for chloroform to 0.523 min− 1 for trichloronitromethane. The rate constants generally increased with bromine substitution.Using the UV removal of combined chlorine as an actinometer, the rate constants were recalculated to actual treatment doses of UV applied in a swimming pool. In an investigated public pool the UV dose was equivalent to an applied electrical energy of 1.34 kWh m− 3 d− 1 and the UV dose required to removed 90{\%} of trichloronitromethane was 0.4 kWh m− 3 d− 1, while 2.6 kWh m− 3 d− 1 was required for chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes ranged from 0.6 to 3.1 kWh m− 3 d− 1. It was predicted thus that a beneficial side-effect of applying UV for removing combined chlorine from the pool water could be a significant removal of trichloronitromethane, chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes.",
author = "Hansen, {Kamilla Marie Speht} and R. Zortea and A. Piketty and {Rodriguez Vega}, S. and Andersen, {Henrik Rasmus}",
year = "2013",
doi = "10.1016/j.scitotenv.2012.11.064",
language = "English",
volume = "443",
pages = "850–856",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

Photolytic removal of DBPs by medium pressure UV in swimming pool water. / Hansen, Kamilla Marie Speht; Zortea, R.; Piketty, A.; Rodriguez Vega, S.; Andersen, Henrik Rasmus.

In: Science of the Total Environment, Vol. 443, 2013, p. 850–856.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Photolytic removal of DBPs by medium pressure UV in swimming pool water

AU - Hansen, Kamilla Marie Speht

AU - Zortea, R.

AU - Piketty, A.

AU - Rodriguez Vega, S.

AU - Andersen, Henrik Rasmus

PY - 2013

Y1 - 2013

N2 - Medium pressure UV is used for controlling the concentration of combined chlorine (chloramines) in many public swimming pools. Little is known about the fate of other disinfection by-products (DBPs) in UV treatment. Photolysis by medium pressure UV treatment was investigated for 12 DBPs reported to be found in swimming pool water: chloroform, bromodichloromethane, dibromochloromethane, bromoform, dichloroacetonitrile, bromochloroacetonitrile, dibromoacetronitrile, trichloroacetonitrile, trichloronitromethane, dichloropropanone, trichloropropanone, and chloral hydrate. First order photolysis constants ranged 26-fold from 0.020 min− 1 for chloroform to 0.523 min− 1 for trichloronitromethane. The rate constants generally increased with bromine substitution.Using the UV removal of combined chlorine as an actinometer, the rate constants were recalculated to actual treatment doses of UV applied in a swimming pool. In an investigated public pool the UV dose was equivalent to an applied electrical energy of 1.34 kWh m− 3 d− 1 and the UV dose required to removed 90% of trichloronitromethane was 0.4 kWh m− 3 d− 1, while 2.6 kWh m− 3 d− 1 was required for chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes ranged from 0.6 to 3.1 kWh m− 3 d− 1. It was predicted thus that a beneficial side-effect of applying UV for removing combined chlorine from the pool water could be a significant removal of trichloronitromethane, chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes.

AB - Medium pressure UV is used for controlling the concentration of combined chlorine (chloramines) in many public swimming pools. Little is known about the fate of other disinfection by-products (DBPs) in UV treatment. Photolysis by medium pressure UV treatment was investigated for 12 DBPs reported to be found in swimming pool water: chloroform, bromodichloromethane, dibromochloromethane, bromoform, dichloroacetonitrile, bromochloroacetonitrile, dibromoacetronitrile, trichloroacetonitrile, trichloronitromethane, dichloropropanone, trichloropropanone, and chloral hydrate. First order photolysis constants ranged 26-fold from 0.020 min− 1 for chloroform to 0.523 min− 1 for trichloronitromethane. The rate constants generally increased with bromine substitution.Using the UV removal of combined chlorine as an actinometer, the rate constants were recalculated to actual treatment doses of UV applied in a swimming pool. In an investigated public pool the UV dose was equivalent to an applied electrical energy of 1.34 kWh m− 3 d− 1 and the UV dose required to removed 90% of trichloronitromethane was 0.4 kWh m− 3 d− 1, while 2.6 kWh m− 3 d− 1 was required for chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes ranged from 0.6 to 3.1 kWh m− 3 d− 1. It was predicted thus that a beneficial side-effect of applying UV for removing combined chlorine from the pool water could be a significant removal of trichloronitromethane, chloral hydrate and the bromine containing haloacetonitriles and trihalomethanes.

U2 - 10.1016/j.scitotenv.2012.11.064

DO - 10.1016/j.scitotenv.2012.11.064

M3 - Journal article

VL - 443

SP - 850

EP - 856

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -