Research Institute of Subtropical Forestry, Key Laboratory of Tree Breeding of Zhejiang Province, Chinese Academy of Forestry, Hangzhou, 311400, China.
Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China.
Environ Sci Pollut Res Int. 2016 Feb;23(3):2715-23. doi: 10.1007/s11356-015-5508-1. Epub 2015 Oct 6.
Willows are a group of versatile tree species that may have multiple environmental applications. In the present study, Salix jiangsuensis J172 plants were grown in the fixed mats as an economic plant-based treatment system to evaluate its potential for removing nutrients in wastewater. Plants grew normally in wastewater compared with those in Hoagland solution. However, wastewater containing a high concentration of chlorine ions was toxic to S. jiangsuensis J172 plants. The plants accumulated large amounts of nitrogen and phosphorus in aboveground tissues under conditions of abundant supply. The removal efficiency for raw wastewater was 82.18-87.78 % for nitrogen, 57.35-65.58 % for phosphorus, and 58.24-59.90 % for chemical oxygen demand. Nutrient removal efficiency was positively correlated with the initial nutrient supply. The results show that S. jiangsuensis J172 grown in the fixed mat economic plant-based treatment system with nutrient-rich, eutrophic water may be an effective, low-cost phytoremediation technology to treat water containing undesirable levels of wastewater.
柳树是一类用途广泛的树种，可能在多个环境应用中具有多种用途。在本研究中，将江苏柳 J172 植株种植在固定基质中作为一种经济的植物处理系统，以评估其去除废水中养分的潜力。与在 Hoagland 溶液中相比，柳树在废水中生长正常。然而，含有高浓度氯离子的废水对江苏柳 J172 植株有毒。在养分充足的条件下，植株大量积累地上组织中的氮和磷。对原废水的去除率分别为氮 82.18-87.78%、磷 57.35-65.58%和化学需氧量 58.24-59.90%。养分去除效率与初始养分供应呈正相关。结果表明，在富营养化水中，用富含养分的固定基质经济植物处理系统种植的江苏柳 J172 可能是一种有效、低成本的水修复技术，可用于处理含有不良水平废水的水。
