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| 湿地植物根表铁膜在污水磷去除中的作用 | |
| 引用本文： | 刘婧,陈昕,罗安程,王珊珊,鞠伟伟. 湿地植物根表铁膜在污水磷去除中的作用[J]. 浙江大学学报(农业与生命科学版), 2011, 37(2). DOI: 10.3785/j.issn.1008-9209.2011.02.016 |
| 作者姓名： | 刘婧 陈昕 罗安程 王珊珊 鞠伟伟 |
| 作者单位： | 1. 浙江大学,环境与资源学院,教育部环境修复与生态健康重点实验室,浙江,杭州,310029 2. 浙江省安吉县环境保护局,浙江,安吉,313300 3. 浙江省环境监测中心站,浙江,杭州,310029 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 通过室内小型人工湿地装置,研究湿地植物根表铁膜在2种磷进水质量浓度条件下对磷去除效率的影响,并通过对铁膜上磷含量、植株根系和地上部吸磷等的研究,阐明根表铁膜在污水磷去除中的主要作用机制.结果表明:在小型人工湿地的整个运行过程中,根表富集铁膜的植物系统和无铁膜植物系统在低磷质量浓度进水时,磷平均去除效率分别为85%和55%;在高磷质量浓度进水时,前12 d内磷去除效率分别为76%和1.7%,富集铁膜的植物系统对磷的去除效率高于无铁膜植物系统;运行结束后,铁膜上磷含量比运行前铁膜上磷含量少,低磷、高磷质量浓度进水的铁膜上磷含量沿水流方向依次减少51%、55%和23%、27%;同时,运行结束后低磷和高磷质量浓度进水的植物根系和地上部磷累积量均比运行前高,沿水流方向根系磷累积量依次增加31%、16%和28%、25%,地上部磷累积量依次增加65%、65%和73%、73%.根表铁膜增加了植物根系磷累积量和植物地上部的磷累积量,这表明富集在湿地植物根表的铁膜在湿地植物对磷的吸收和污水磷的去除中起到了重要作用. |
| 关 键 词： | 湿地植物 铁膜 磷去除 磷吸收 |
Role of root surface iron plaque in phosphorous removal from wastewater by wetland plants |
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| LIU Jing,CHEN Xin,LUO An-cheng,WANG Shan-shan,JU Wei-wei. Role of root surface iron plaque in phosphorous removal from wastewater by wetland plants[J]. Journal of Zhejiang University(Agriculture & Life Sciences), 2011, 37(2). DOI: 10.3785/j.issn.1008-9209.2011.02.016 | |
| Authors: | LIU Jing CHEN Xin LUO An-cheng WANG Shan-shan JU Wei-wei |
| Affiliation: | LIU Jing1,CHEN Xin1,LUO An-cheng1,WANG Shan-shan2,JU Wei-wei3(1.Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health,College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310029,China,2.Environmental Protection Bureau,Anji County,Zhejiang Province,Anji,Zhejiang 313300,3.Environmental Monitoring Center Station,China) |
| Abstract: | The P removal efficiency with two levels of P in inflow by two lab-scale wetland systems with and without iron plaque on Typha angustifolia plant roots and the mechanism of P removal in sewage by iron plaque were studied through the P contents in the iron plaque,the plant roots and shoots.The results showed that with the lower P level,the mean removal efficiency of P were 85% and 55% with and without iron plaque,respectively,and with the higher P level,the removal efficiency of P were 76% and 1.7% during th... |
| Keywords: | wetland plants iron plaque phosphorous removal phosphorous uptake |
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