氢化物
富营养化
磷
水生植物
水生植物
氮气
单作
废水
环境科学
营养物
生物量(生态学)
铵
农学
化学
环境工程
生态学
生物
有机化学
作者
Guoning Chen,Liushu Pan,Zhuo Sun,Jianhua Xiong,Hailin Zhu,Shuangfei Wang,Hainong Song,Hongfei Lin,Yongli Chen,Jiaxiang Liang
出处
期刊:Journal of Biobased Materials and Bioenergy
[American Scientific Publishers]
日期:2020-08-01
卷期号:14 (4): 524-530
被引量:3
标识
DOI:10.1166/jbmb.2020.1972
摘要
In general, nitrogen and phosphorus in eutrophic water are absorbed by submerged plants for growth, which is considered as a feature and frequently applied in sustainable wastewater treatment. These plants are entirely submerged at the bottom of the water, absorbing nitrogen and phosphorus by roots, stems, leaves and epidermal cells. Compared with other species of aquatic plants, submerged plants show certain advantages in the aspects of planting area, total biomass and total removal of nitrogen and phosphorus. Rational utilization of submerged plants is an effective way to remove nitrogen and phosphorus from eutrophic water. Submerged macrophyte has been at the focus of attention in recent years as an alternative system for aquatic plant wastewater treatment with several applications in eutrophication. Aiming at the pollution control scheme of inland lakes, in this study, the removal of nitrogen and phosphorus by Hydrilla verticillaya ( H. verticillaya ) and Vallisneria natans ( V. natans ) were studied and compared in monoculture and mixed-culture plantings, thus screened the best submerged plants. Results showed that the removal capacity for ammonium (NH + 4 –N), Nitrate (NO – 3 –N) and total phosphorus (TP) from high to low was NH + 4 –N, NO – 3 –N, and TP. Reasonable allocation of plants can improve the removal efficiency of nitrogen and phosphorus. The order of removal capacity for different submerged plants to pollutants was: mixed culture V. natans and H. verticillaya > H. verticillaya > V. natans . The transformation of NO – 3 –N to NH + 4 –N was considered as the NH + 4 –N removal mechanism.
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