EFFECT OF COPPER ON NITRIFYING AND HETEROTROPHIC POPULATIONS IN ACTIVATED SLUDGE
The steady state effect of copper discharges on nitrification in bench-scale activated sludge treatment systems was investigated. The inhibitory effects of copper were evaluated by determining the changes in the performance of nitrifying and heterotrophic populations following the continuous addition of copper via influent wastewater. Comparison of nitrifiers' and heterotrophs' response to Cu suggested that nitrifiers were more sensitive to Cu than aerobic heterotrophs. In addition, shifts in microbial community structure in activated sludge receiving continuous dose of copper were monitored with fatty acid methyl ester (FAME) technique. Principal component analysis (PCA) FAME results showed that the continuous addition of Cu shifted community structure of activated sludges.
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Document Type: Research Article
Publication date: 2002-01-01
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