Applied Sciences | |
Longitudinal Removal of Bisphenol-A and Nonylphenols from Pretreated Domestic Wastewater by Tropical Horizontal Sub-SurfaceConstructed Wetlands | |
Wen Yee Lee1  Shane Walker2  Carlos Madera-Parra3  Miguel Peña-Varón4  Andrés Toro-Vélez4  Hector García-Hernández5  Piet Lens5  | |
[1] Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968, USA;Department of Civil Engineering, University of Texas at El Paso, El Paso, TX 79968, USA;Escuela EIDENAR-Facultad de Ingeniería, Universidad del Valle, Cali 100-00, Colombia;Grupo de Saneamiento Ambiental, Instituto Cinara, Unversidad del Valle, Cali 100-00, Colombia;UNESCO-IHE Institute for Water Education, 2611 AX Delft, The Netherlands; | |
关键词: municipal wastewater; constructed wetlands; Bisphenol A; nonylphenol; biodegradation; tropical environment; | |
DOI : 10.3390/app7080834 | |
来源: DOAJ |
【 摘 要 】
Bisphenol A (BPA) and nonylphenols (NPs), with a high potential to cause endocrine disruption, have been identified at levels of nanograms per liter and even micrograms per liter in effluents from wastewater treatment plants. Constructed wetlands (CWs) are a cost-effective wastewater treatment alternative due to the low operational cost, reduced energy consumption, and lower sludge production, and have shown promising performance for treating these compounds. A CW pilot study was undertaken todetermine its potential to remove BPA and NP from municipal wastewater. Three CWs were used: the first CW was planted with Heliconia sp., a second CW was planted with Phragmites sp., and the third CW was an unplanted control. The removal efficiency of the Heliconia-CW was 73 ± 19% for BPA and 63 ± 20% for NP, which was more efficient than the Phragmites-CW (BPA 70 ± 28% and NP 52 ± 23%) and the unplanted-CW (BPA 62 ± 33% and NP 25 ± 37%). The higher capacity of the Heliconia-CW for BPA and NP removal suggests that a native plant from the tropics can contribute to a better performance of CW for removing these compounds.
【 授权许可】
Unknown