期刊
BIORESOURCE TECHNOLOGY
卷 179, 期 -, 页码 1-7出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.11.053
关键词
Nitrogen; Phosphorous; Aquatic plants; Absorption kinetics; Enzyme activity
资金
- Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07102-004]
Nutrient removal behaviors of four aquatic plant treatment systems (Oenanthe javanica, Iris pseudacorus L., Canna lily, and Potamogeton crispus) were systematically examined and compared. The kinetics of nutrient uptake were conducted with the standard depletion method. All four aquatic species exhibited a strong preference of ammonium nitrogen (NH4+-N) over nitrate nitrogen (NO3-N) and nitrite nitrogen (NO2-N). Main pathways of nutrient removal in the aquatic plant treatment system were examined in details. It was estimated that direct assimilation by plants accounted for 28.2-34.5% of N reduction and 25.2-33.4% of P reduction while substrate absorption accounted for 7.2-25.5% of N reduction and 7.3-25.0% of P reduction. The activity of urease and phosphatase in the substrates could indicate the aquatic plant treatment system's capability for reducing TN and soluble P load. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据