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Diclofenac and carbamazepine removal from domestic wastewater using a Constructed Wetland-Solar Photo-Fenton coupled system
Ecological Engineering ( IF 3.9 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.ecoleng.2019.105699
Henry Alberto Casierra-Martinez , Carlos Arturo Madera-Parra , Ximena María Vargas-Ramírez , Aracelly Caselles-Osorio , Wilmar Alexander Torres-López

Abstract The presence of pharmaceutical compounds in aquatic ecosystems may affect both biota and human health because these micropollutants are capable of altering the metabolism and reproduction capacity of the live organisms of the aquatic ecosystems. The main route of entry of these pollutants into the aquatic environment is through Wastewater Treatment Plants (WWTPs) effluents. Compounds such as diclofenac (DCF) and carbamazepine (CBZ) persist, undergoing little or no degradation during treatment. Coupled systems combining biological treatments and Advanced Oxidation Technologies (AOTs) represent an alternative to reduce the risk of the presence of pharmaceuticals in the environment by achieving high removal efficiency at a low cost. This research evaluated the performance of a coupled system integrated by Horizontal Subsurface Flow Constructed Wetland (CW HSSF) and Solar Photo-Fenton at laboratory scale under America tropical conditions for the removal of DCF and CBZ from domestic wastewater at 15 μg L−1, on average. Three Fe2 +/H2O2 ratios (0.1, 0.3, and 0.8) were tested. Concentrations of DCF, CBZ, organic matter (DOC), Total Nitrogen (TN), and in situ variables were measured throughout the experiment. Removal efficiencies up to 92% and 86% were achieved for DCF and CBZ, respectively, using the Fe2+/H2O2 ratio of 0.1. There were no significant differences between the Fe2+/H2O2 ratios used (p

中文翻译:

使用人工湿地-太阳能光-芬顿耦合系统从生活废水中去除双氯芬酸和卡马西平

摘要 水生生态系统中药物化合物的存在可能会影响生物群和人类健康,因为这些微污染物能够改变水生生态系统中活生物的新陈代谢和繁殖能力。这些污染物进入水生环境的主要途径是通过废水处理厂 (WWTP) 的排放物。双氯芬酸 (DCF) 和卡马西平 (CBZ) 等化合物持续存在,在治疗过程中很少或没有降解。结合生物处理和高级氧化技术 (AOT) 的耦合系统代表了一种替代方案,可通过以低成本实现高去除效率来降低环境中存在药物的风险。本研究评估了由水平地下流人工湿地 (CW HSSF) 和 Solar Photo-Fenton 在美国热带条件下实验室规模集成的耦合系统的性能,用于从生活废水中去除 15 μg L−1 的 DCF 和 CBZ,在平均数。测试了三种 Fe2+/H2O2 比率(0.1、0.3 和 0.8)。在整个实验过程中测量了 DCF、CBZ、有机物 (DOC)、总氮 (TN) 和原位变量的浓度。使用 0.1 的 Fe2+/H2O2 比率,DCF 和 CBZ 的去除效率分别达到 92% 和 86%。使用的 Fe2+/H2O2 比率之间没有显着差异 (p 测试了三种 Fe2+/H2O2 比率(0.1、0.3 和 0.8)。在整个实验过程中测量了 DCF、CBZ、有机物 (DOC)、总氮 (TN) 和原位变量的浓度。使用 0.1 的 Fe2+/H2O2 比率,DCF 和 CBZ 的去除效率分别达到 92% 和 86%。使用的 Fe2+/H2O2 比率之间没有显着差异 (p 测试了三种 Fe2+/H2O2 比率(0.1、0.3 和 0.8)。在整个实验过程中测量了 DCF、CBZ、有机物 (DOC)、总氮 (TN) 和原位变量的浓度。使用 0.1 的 Fe2+/H2O2 比,DCF 和 CBZ 的去除效率分别达到 92% 和 86%。使用的 Fe2+/H2O2 比率之间没有显着差异 (p
更新日期:2020-06-01
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