Selective elimination of chromophoric and fluorescent dissolved organic matter in a full-scale municipal wastewater treatment plant

2017 ◽  
Vol 57 ◽  
pp. 150-161 ◽  
Author(s):  
Xiaofang Yang ◽  
Zhongbo Zhou ◽  
Maddela Naga Raju ◽  
Xiaoxuan Cai ◽  
Fangang Meng
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Dissolved Organic Matter ◽  
Wastewater Treatment Plant ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Full Scale ◽  
Municipal Wastewater Treatment ◽  
Fluorescent Dissolved Organic Matter ◽  
Selective Elimination

scholarly journals Genes encoding tetracycline resistance in a full-scale municipal wastewater treatment plant investigated during one year

2009 ◽  
Vol 8 (2) ◽  
pp. 247-256 ◽  
Author(s):  
Stefan Börjesson ◽  
Ann Mattsson ◽  
Per-Eric Lindgren
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Tetracycline Resistance ◽  
Full Scale ◽  
Municipal Wastewater Treatment ◽  
Genes Encoding ◽  
Total Dna ◽  
One Year

Tetracycline-resistant bacteria and genes encoding tetracycline resistance are common in anthropogenic environments. We studied how wastewater treatment affects the prevalence and concentration of two genes, tetA and tetB, that encode resistance to tetracycline. Using real-time polymerase chain reaction (PCR) we analysed wastewater samples collected monthly for one year at eight key-sites in a full-scale municipal wastewater treatment plant (WWTP). We detected tetA and tetB at each sampling site and the concentration of both genes, expressed per wastewater volume or per total-DNA, decreased over the treatment process. The reduction of tetA and tetB was partly the result of the sedimentation process. The ratio of tetA and tetB, respectively, to total DNA was lower in or after the biological processes. Taken together our data show that tetracycline resistance genes occur throughout the WWTP, and that the concentrations are reduced under conventional operational strategies.

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