期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 23, 期 3, 页码 2715-2723出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-015-5508-1
关键词
Salix jiangsuensis J172; Phytoremediation; Wastewater; Growth; Root; Nutrient
资金
- Public Project of Science and Technology Department of Zhejiang Province [2011C22003]
- Central Scientific Research Institute of Public Welfare [RISF 6907]
- Introduced Project of Advanced Science and Technology of Forestry (948) [2006-4-06]
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.
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