Abstract

The fate of halogenated disinfection byproducts (DBPs) in treatment wetlands and the changes in the DBP formation potential as wastewater treatment plant (WWTP)-derived water moves through the wetlands were investigated. Wetland inlet and outlet samples were analyzed for total organic halide (TOX), trihalomethanes (THM), haloacetic acids (HAA), dissolved organic carbon (DOC), and UV absorbance. Removal of DBPs by the wetland ranged from 13 to 55% for TOX, from 78 to 97% for THM, and from 67 to 96% for HAA. The 24-h and 7-day nonpurgeable total organic halide (NPTOX), THM, and HAA formation potential yields were determined at the inlet and outlet of these wetlands. The effect of wetlands on the production of DBP precursors and their DBP-formation potential yield from wastewater was dramatic. The wetlands increased DBP yield up to a factor of almost 30. Specific changes in the DOC precursors were identified using 13C NMR spectroscopy.

Keywords

WetlandHaloacetic acidsDissolved organic carbonEnvironmental chemistryChemistryWastewaterHalideWater treatmentConstructed wetlandTrihalomethaneTotal organic carbonSewage treatmentOrganic matterEnvironmental engineeringEnvironmental scienceInorganic chemistryEcologyOrganic chemistry

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Publication Info

Year
2000
Type
article
Volume
34
Issue
13
Pages
2703-2710
Citations
74
Access
Closed

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Colleen E. Rostad, Barbara S. Martin, Larry B. Barber et al. (2000). Effect of a Constructed Wetland on Disinfection Byproducts:  Removal Processes and Production of Precursors. Environmental Science & Technology , 34 (13) , 2703-2710. https://doi.org/10.1021/es9900407

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DOI
10.1021/es9900407