Abstract Constructed wetlands have been proven as efficient natural-like technologies to treat different wastewater types. However, phosphorus (P) removal with these systems is still a challenge due to their low performance. This study aims to compare, in microcosm subsurface flow constructed wetland system, the PO4-P apparent balance of five macrophytes (Carex elata All., Juncus effusus L., Phalaris arundinacea L. var. picta, Phragmites australis (Cav.) Trin., and Typha latifolia L.) and an unvegetated control to evaluate plants' contribution in P removal. Compared with unvegetated systems, plant presence increased the PO4-P removal between 5.4% (P. arundinacea) and 9.4% (C. elata). Only T. latifolia was able to remove more than the PO4-P load (13.05 g m−2) whereas the removal reached 86.2%, 48.1%, 37.6% and 36.0% for P. aundinacea, C. elata, J. effusus and P. australis, respectively. Considering the total P load (51 g m−2), its removal from wastewater reached the highest value with T. latifolia (21.8% of inlet quantity) whereas the other species had an average removal value of 6.5%. The biennial study indicates: 1) T. latifolia as the best solution to remove PO4-P from the wastewater being able to remove more than PO4-P load (1.5 times); 2) P. aundinacea as other possible choice able to remove about 86% of PO4-P load.

中文翻译：

---

植被对人工湿地除磷的贡献

摘要 人工湿地已被证明是处理不同类型废水的有效类自然技术。然而，由于这些系统的低性能，用这些系统去除磷 (P) 仍然是一个挑战。本研究旨在比较微观地下流人工湿地系统中五种大型植物（Carex elata All.、Juncus effusus L.、Phalaris arundinacea L. var. picta、Phragmites australis (Cav.) Trin. , 和 Typha latifolia L.) 和无植被对照，以评估植物对 P 去除的贡献。与没有植被的系统相比，植物的存在增加了 5.4%（P. arundinacea）和 9.4%（C. elata）之间的 PO4-P 去除。只有 T. latifolia 能够去除超过 PO4-P 负载（13.05 g m-2），而对于 P. aundinacea、C. elata，去除率达到 86.2%、48.1%、37.6% 和 36.0% 分别为 J. effusus 和 P. australis。考虑到总磷负荷 (51 g m-2)，其从废水中的去除率达到最高值，其中 T. latifolia（入口量的 21.8%），而其他物种的平均去除率为 6.5%。两年一次的研究表明： 1) T. latifolia 作为去除废水中 PO4-P 的最佳解决方案，能够去除超过 PO4-P 负荷（1.5 倍）；2) P. aundinacea 作为其他可能的选择，能够去除约 86% 的 PO4-P 负载。阔叶作为去除废水中 PO4-P 的最佳解决方案，能够去除超过 PO4-P 负荷（1.5 倍）；2) P. aundinacea 作为其他可能的选择，能够去除约 86% 的 PO4-P 负载。阔叶作为去除废水中 PO4-P 的最佳解决方案，能够去除超过 PO4-P 负荷（1.5 倍）；2) P. aundinacea 作为其他可能的选择，能够去除约 86% 的 PO4-P 负载。