Triclosan in a North Texas wastewater treatment plant and the influent and effluent of an experimental constructed wetland

The antimicrobial triclosan was analyzed in unfiltered samples from influent, effluent, and receiving stream and before and after a pilot‐scale constructed wetland at a North Texas municipal wastewater treatment plant. Triclosan concentrations were reduced by 97 to 99% by the activated sludge treatm...

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Bibliographic Details
Published in:Environmental toxicology and chemistry 2006-02, Vol.25 (2), p.367-372
Main Authors: Waltman, Elise Lyn, Venables, Barney J., Waller, William T.
Format: Article
Language:English
Subjects:
Activated sludge
Animal, plant and microbial ecology
Anti-Infective Agents, Local - analysis
Applied ecology
Applied sciences
Artificial wetlands
Biodegradation, Environmental
Biological and medical sciences
Biomass
Chemical compounds
Community structure
Constructed wetland
Ecosystem
Ecotoxicology, biological effects of pollution
Effluents
Environmental Monitoring
Eukaryota - growth & development
Exact sciences and technology
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
Municipal wastewater
Pollution
Sludge treatment
Summer
Texas
Toxicology
Triclosan
Triclosan - analysis
Waste Disposal, Fluid
Wastewater treatment plant
Wastewater treatment plants
Wastewaters
Water Pollutants, Chemical - analysis
Water treatment and pollution
Water treatment plants
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Summary:The antimicrobial triclosan was analyzed in unfiltered samples from influent, effluent, and receiving stream and before and after a pilot‐scale constructed wetland at a North Texas municipal wastewater treatment plant. Triclosan concentrations were reduced by 97 to 99% by the activated sludge treatment plant. Effluent concentrations were further reduced by passage through the constructed wetland, but receiving stream concentrations were not statistically significantly different from effluent concentrations. Effluent concentrations of triclosan were seasonal with highest concentrations occurring during the summer months. The effluent‐dominated receiving stream maximum concentrations during summer months were below reported algal no‐observed‐effect concentrations based on biomass and growth rate but exceeded concentrations reported to cause shifts in algal community structure.
ISSN:0730-7268
1552-8618
DOI:10.1897/05-112R.1