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Article

Effect of a Constructed Wetland on Disinfection Byproducts: Removal Processes and Production of Precursors

Colleen E. Rostad,* Barbara S. Martin, Larry B. Barber, and Jerry A. Leenheer

U.S. Geological Survey, Building 95, Denver Federal Center, Denver, Colorado 80225

Stephen R. Daniel

Chemistry/Geochemistry Department, Colorado School of Mines, Golden, Colorado 80401

Environ. Sci. Technol., 2000, 34 (13), pp 2703–2710

DOI: 10.1021/es9900407

Publication Date (Web): May 31, 2000

Corresponding author e-mail: cerostad@usgs.gov; phone: (303)236-3971.

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.

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Published In Issue July 01, 2000
Received for review January 13, 1999
Revised manuscript received April 3, 2000
Accepted April 12, 2000

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Article

Effect of a Constructed Wetland on Disinfection Byproducts: Removal Processes and Production of Precursors

Abstract

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History

Recommend & Share

Related Content

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Characterization of High Molecular Weight Disinfection Byproducts from Chlorination of Humic Substances with/without Coagulation Pretreatment Using UF−SEC−ESI-MS/MS

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