Chemistry Department, University of Evora, Evora, Portugal.
Bioresour Technol. 2010 Feb;101(3):886-92. doi: 10.1016/j.biortech.2009.09.001. Epub 2009 Sep 23.
Microcosm constructed wetlands systems established with a matrix of light expanded clay aggregates (LECA) and planted with Typha spp. were used to evaluate their ability to remove pharmaceuticals ibuprofen, carbamazepine and clofibric acid from wastewaters. Seasonal variability of these systems' performances was also evaluated. Overall, removal efficiencies of 96%, 97% and 75% for ibuprofen, carbamazepine and clofibric acid, respectively, were achieved under summer conditions after a retention time of 7 days. In winter, a maximum loss of 26% in removal efficiency was observed for clofibric acid. Removal kinetics was characterized by a fast initial step (>50% removal within 6h) mainly due to adsorption on LECA but, on a larger timescale, plants also contributed significantly to the system's performance. Despite the fact that further tests using larger-scale systems are required, this study points to the possible application of these low-cost wastewater treatment systems for dealing with pharmaceuticals contaminated wastewater.
采用轻质膨胀粘土骨料（LECA）作为基质构建的微观湿地系统，并种植了香蒲属植物，用于评估其从废水中去除布洛芬、卡马西平和氯芬酸等药物的能力。还评估了这些系统性能的季节性变化。总的来说，在夏季条件下，经过 7 天的停留时间，布洛芬、卡马西平和氯芬酸的去除效率分别达到了 96%、97%和 75%。在冬季，氯芬酸的去除效率最大损失了 26%。去除动力学的特点是快速的初始步骤（6 小时内去除率超过 50%），主要归因于在 LECA 上的吸附，但在更大的时间尺度上，植物也对系统的性能有重要贡献。尽管需要使用更大规模的系统进行进一步测试，但本研究表明，这些低成本废水处理系统可能适用于处理受药物污染的废水。
