

@article {12210,
	title = {Effects of Advanced Treatment Systems on the Removal of Antibiotic Resistance Genes in Wastewater Treatment Plants from Hangzhou, China},
	journal = {Environmental Science and Technology},
	volume = {47},
	number = {15},
	year = {2013},
	note = {Chen, Hong Zhang, Mingmei},
	month = {Aug},
	pages = {8157-8163},
	abstract = {<p>This study aimed at quantifying the concentration and removal of antibiotic resistance genes (ARGs) in three municipal wastewater treatment plants (WWTPs) employing different advanced treatment systems [biological aerated filter, constructed wetland, and ultraviolet (UV) disinfection]. The concentrations of tetM, tetO, tetQ, tetW, sulI, sulII, intI1, and 16S rDNA genes were examined in wastewater and biosolid samples. In municipal WWTPs, ARG reductions of 1-3 orders of magnitude were observed, and no difference was found among the three municipal WWTPs with different treatment processes (p \&gt; 0.05). In advanced treatment systems, 1-3 orders of magnitude of reductions in ARGs were observed in constructed wetlands, 0.6-1.2 orders of magnitude of reductions in ARGs were observed in the biological aerated filter, but no apparent decrease by UV disinfection was observed. A significant difference was found between constructed wetlands and biological filter (p \&lt; 0.05) and between constructed wetlands and UV disinfection (p \&lt; 0.05). In the constructed wetlands, significant correlations were observed in the removal of ARGs and 16S rDNA genes (R-2 = 0.391-0.866; p \&lt; 0.05). Constructed wetlands not only have the comparable ARG removal values with WWTP (p \&gt; 0.05) but also have the advantage in ARG relative abundance removal, and it should be given priority to be an advanced treatment system for further ARG attenuation from WWTP.</p>
},
	isbn = {0013-936X},
	author = {Chen, H. and Zhang, M. M.}
}
