Plant Biology Division, University of the Philippines Los Baños (UPLB), Los Baños, Philippines.
Biology Department, Benguet State University, Benguet, Philippines.
Int J Phytoremediation. 2019;21(14):1463-1473. doi: 10.1080/15226514.2019.1633268. Epub 2019 Jul 18.
Phytoremediation using local macrophytes was explored in Balili River, Philippines. The macrophytes used were , , and planted in pilot-scale constructed wetlands and subjected to varying hydraulic retention time (HRT) treatments. Results showed that these macrophytes have high phytoremediation performance in almost all water quality parameters. Also, HRT significantly affected the pollution reduction efficiency of the macrophytes. Significant pollution reduction was observed as early as HRT 1 day, but the optimal HRT for all the macrophytes was 3-4 days. At optimal HRT, the pollution reduction efficiency of the four macrophytes ranged from 96% to 99.9% for TSS, 87% to 95% for BOD, 85% to 99% for NO, 85% to 96% for PO and 99.9% for total and fecal coliform. Also, Hg and Pb were significantly reduced. Results of TSS, DO and NO passed the water quality standard, while BOD and PO were slightly above. But total and fecal coliform, amidst the high reduction rate, was still not within the permissible level for Class A water. Among the macrophytes, generally have the best pollution reduction efficiency. Our study revealed comparable or even better pollution reduction efficiency of local macrophytes than commonly used ones such as spp. and spp.
利用本地大型水生植物进行植物修复在菲律宾的巴利利河得到了探索。使用的大型水生植物有、、和，种植在试验规模的人工湿地中，并进行不同水力停留时间（HRT）处理。结果表明，这些大型水生植物在几乎所有水质参数方面都具有很高的植物修复性能。此外，HRT 显著影响大型水生植物的污染削减效率。早在 HRT 1 天就观察到了显著的污染削减，但所有大型水生植物的最佳 HRT 为 3-4 天。在最佳 HRT 下，四种大型水生植物对 TSS 的污染削减效率范围为 96%至 99.9%，对 BOD 的污染削减效率为 87%至 95%，对 NO 的污染削减效率为 85%至 99%，对 PO 的污染削减效率为 85%至 96%，对总大肠菌群和粪大肠菌群的污染削减效率为 99.9%。此外，Hg 和 Pb 的含量也显著降低。TSS、DO 和 NO 的结果符合水质标准，而 BOD 和 PO 略高于标准。但是，总大肠菌群和粪大肠菌群虽然具有很高的削减率，但仍未达到 A 类水的允许水平。在这些大型水生植物中，一般具有最佳的污染削减效率。我们的研究表明，本地大型水生植物的污染削减效率可与常用的大型水生植物如、等相媲美，甚至更好。
