Removal of nutrients in saline wastewater using constructed wetlands: Plant species, influent loads and salinity levels as influencing factors

被引：75

作者：

Liang, Yinxiu ^{[1
]}

Zhu, Hui ^{[1
]}

Banuelos, Gary ^{[2
]}

Yan, Baixing ^{[1
]}

Shutes, Brian ^{[3
]}

Cheng, Xianwei ^{[1
]}

Chen, Xin ^{[1
]}

机构：

[1] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Jilin, Peoples R China

[2] ARS, USDA, San Joaquin Valley Agr Sci Ctr, 9611 South Riverbend Ave, Parlier, CA 93648 USA

[3] Middlesex Univ, Urban Pollut Res Ctr, London NW4 48T, England

来源：

CHEMOSPHERE | 2017年 / 187卷

关键词：

Nitrogen; Phosphorus; Constructed wetlands; Plant species; Salt stress; PHOSPHORUS REMOVAL; MICROBIAL COMMUNITY; NITROGEN; PERFORMANCE; GROWTH; NITRIFICATION; RHIZOSPHERE; SELENIUM; REACTOR;

D O I：

10.1016/j.chemosphere.2017.08.087

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study aims to evaluate how plant species, influent loads and salinity levels affect the removal of nutrients from saline wastewater using constructed wetlands (CWs). CWs planted with Canna indica showed the greatest removal percentages among the four tested species for nitrogen (N) (similar to 100%) at both low and high influent loads, and similar to 100% and 93.8% for phosphorus (P) at low and high influent loads, respectively at an electrical conductivity (EC) of 7 mS/cm (25 degrees C). The influence of different salinity levels on plant assimilation of N and P varied with their respective concentrations; salinity (e.g., EC at 7,10 and 15 mS/cm) even enhanced plant absorption of N and P under specific conditions. In conclusion, CWs planted with selected species can be used for the removal of N and P under a range of different salinity levels (e.g., EC at 7, 10 and 15 mS/cm, 25 degrees C). (C) 2017 Published by Elsevier Ltd.

引用

页码：52 / 61

页数：10

共 50 条

[1] Influence of salinity on partial nitrification in a submerged biofilter [J].