|本期目录/Table of Contents|

[1]韦菊阳,陈章和.梭鱼草和芦苇人工湿地对重金属和营养的去除率比较[J].应用与环境生物学报,2013,19(01):179-183.[doi:10.3724/SP.J.1145.2013.00179]
 WEI Juyang,CHEN Zhanghe.Removal of Heavy Metal Elements and Nutrients by Pontederia cordata and Phragmites australis Constructed Wetlands[J].Chinese Journal of Applied & Environmental Biology,2013,19(01):179-183.[doi:10.3724/SP.J.1145.2013.00179]
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梭鱼草和芦苇人工湿地对重金属和营养的去除率比较()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
19卷
期数:
2013年01期
页码:
179-183
栏目:
研究简报
出版日期:
2013-02-25

文章信息/Info

Title:
Removal of Heavy Metal Elements and Nutrients by Pontederia cordata and Phragmites australis Constructed Wetlands
作者:
韦菊阳陈章和
(1华南师范大学化学与环境学院 广州 510631)
(2华南师范大学生命科学学院 广州 510631)
Author(s):
WEI JuyangCHEN Zhanghe
(1South China Normal University, School of Chemistry and Environment, Guangzhou 510631, China)
(2South China Normal University, College of Life Sciences, Guangzhou 510631, China)
关键词:
梭鱼草芦苇营养物质重金属去效率人工湿地污水处理
Keywords:
Pontederia cordata Phragmites australis nutrient heavy metal removal rate constructed wetlands wastewater treatment
分类号:
X173 : X703
DOI:
10.3724/SP.J.1145.2013.00179
文献标志码:
A
摘要:
为探讨梭鱼草(Pontederia cordata L.)作为人工湿地植物的应用潜力,通过在室外用瓷盆(上直径80 cm,底直径50 cm,高45 cm)构建单种潜流湿地,比较了梭鱼草与常用的人工湿地植物芦苇(Phragmites australis Trin. ex Steud.)在人工湿地中对营养物质和重金属Cd2+和Pb2+的去除率. 结果显示,梭鱼草对总氮(TN)和生化需氧量(BOD5)的去除率显著高于芦苇(P<0.05). 两种植物湿地对Cd2+和Pb2+的去除率无显著差异. 两种植物体内Cd2+和Pb2+的含量均是根>茎>叶,根部为主要的富集器官. 污水停留2 d和停留7 d,两种湿地对营养物质的去除率差别不大,而对重金属的去除率,停留7 d显著高于停留2 d,表明人工湿地对重金属的去除比对营养的去除要慢一些. 研究表明,梭鱼草是一种具有良好景观效果和较高去污率的湿地植物,在人工湿地中具有较好的应用潜力.
Abstract:
For studying the potential applications of Pontederia cordata L. as a constructed wetland plant, the removal effects of P. cordata and Phragmites australis Trin. ex Steud. on nutrients and heavy metal elements in the wetlands were compared. Mono-cultivated small-scale wetlands were constructed using pots (80 cm-50 cm-45 cm, the upper diameter - bottom diameter - high). The results showed that the removal rates for TN and BOD5 by P. cordata was significantly higher than those by P. australis (P < 0.05). But there was no significant difference between them for the removal of Cd2 + and Pb2+. Content distribution of Cd2+ and Pb2+ in both plants was as follows: root > stem > leaf. For both the wetlands, there was little difference in nutrient removal between hydraulic retention time (HRT) of 2 d and 7 d, but heavy metal removal rate at HRT of 7 d was significantly higher than that at HRT of 2 d , indicating that the removal of heavy metals was slower than that of nutrients in the constructed wetlands. These results suggest that P. cordata has a good application potential in constructed wetlands because of its good visual effects and high removal rates for wastewater pollutants.

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备注/Memo

备注/Memo:
国家自然科学基金项目(30470346)和广东省自然科学基金项目(06025056)资助 Supported by the National Natural Science Foundation of China (No. 30470346) and the Natural Science Foundation of Guangdong, China (No. 06025056)
更新日期/Last Update: 2013-02-26