Evaluation of an alternative method for wastewater treatment containing pesticides using solar photocatalytic oxidation and constructed wetlands

被引：52

作者：

Berberidou, Chrysanthi ^{[1
]}

Kitsiou, Vasiliki ^{[1
]}

Lambropoulou, Dimitra A. ^{[1
]}

Antoniadis, Apostolos ^{[1
,2
]}

Ntonou, Eleftheria ^{[2
]}

Zalidis, George C. ^{[2
]}

Poulios, Ioannis ^{[1
]}

机构：

[1] Aristotle Univ Thessaloniki, Dept Chem, Thessaloniki 54124, Greece

[2] Aristotle Univ Thessaloniki, Sch Agr, Thessaloniki 54124, Greece

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2017年 / 195卷

关键词：

Clopyralid; Pesticide; Photocatalytic; Wetlands; Solar; Phytotoxicity; PHOTODEGRADATION; DEGRADATION; RUNOFF; SPECIATION; MOBILITY; REMOVAL; MONURON; IONS;

D O I：

10.1016/j.jenvman.2016.06.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present study proposes an integrated system based on the synergetic action of solar photocatalytic oxidation with surface flow constructed wetlands for the purification of wastewater contaminated with pesticides. Experiments were conducted at pilot scale using simulated wastewater containing the herbicide clopyralid. Three photocatalytic methods under solar light were investigated: the photo-Fenton and the ferrioxalate reagent as well as the combination of photo-Fenton with TiO2 P25, which all led to similar mineralization rates. The subsequent treatment in constructed wetlands resulted in further decrease of DOC and inorganic ions concentrations, especially of NO3-. Clopyralid was absent in the outlet of the wetlands, while the concentration of the detected intermediates was remarkably low. These findings are in good agreement with the results of phytotoxicity of the wastewater, after treatment with the ferrioxalate/wetlands process, which was significantly reduced. Thus, this integrated system based on solar photocatalysis and constructed wetlands has the potential to effectively detoxify wastewater containing pesticides, producing a purified effluent which could be exploited for reuse applications. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：133 / 139

页数：7

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