期刊论文

Study on Nitrogen Removal Characteristics of Swine Wastewater in the Constructed Wetland Systems of Canna indica,Pontederia cordata and Iris pseudacorus

中文

生态与农村环境学报

1673-4831

2020

36

8

1080-1088

10.19741/j.issn.1673-4831.2019.0905

2018YFD0800103:国家重点研发计划 2018JJ3581:湖南省自然科学基金 161100310600:国家科技重大专项

本校为其他机构

湿地植物是人工湿地系统的重要组成部分之一,不同植物构建的湿地系统有不同的脱氮特征。通过野外小区试验,以3种常见挺水植物———美人蕉(Canna indica) 、梭鱼草(Pontederia cordata) 、黄菖蒲(Iris pseudacorus)为研究对象,在水力停留时间为7 d时探究其对养猪废水(沼液)的脱氮特征。结果表明: 3种植物湿地系统对TN、NH_4~+-N和NO_3~--N的去除效果均为梭鱼草>黄菖蒲>美人蕉,脱氮量分别为3.93、3.74和2.96 g·m~(-2)·d~(-1),其中微生物转化脱氮居主导地位,分别占去除总量的66%、73%和64%,底泥吸附(13%、10%和22%)和植物吸收(21%、17%和14%)途径占比均较低。3种挺水植物在养猪废水(沼液)中均可...

Wetland plants are one of the critical components of the constructed wetland,and wetland systems constructed by different plants have different nitrogen removal characteristics. In this study,three emerged plants,Canna indica,Pontederia cordata and Iris pseudacorus,were selected for the field control experiment under the hydraulic retention time of 7 days. The nitrogen removal characteristics of the three plants on treating swine wastewater were investigated. The results show that the removal rates of TN,NH_4~ +-N,and NO_3~ --N were P. cordata ...