| 曝气对潜流人工湿地中木本植物的影响 |
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| 引用本文： | 陈永华, 吴晓芙, 纪智慧, 马群, 陈明利. 曝气对潜流人工湿地中木本植物的影响[J]. 环境工程学报, 2015, 9(9): 4199-4205. doi: 10.12030/j.cjee.20150917 |
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| 作者姓名： | 陈永华 吴晓芙 纪智慧 马群 陈明利 |
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| 作者单位： | 1.中南林业科技大学环境科学与工程学院, 长沙 410004 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2014ZX07206-001-07) 湖南省自然科学基金(2015JJ2202) 国家级林业科学技术推广项目(2014-56) 湖南省环境科学与工程重点学科建设项目 |
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| 摘 要： | 为了增加人工湿地植物的多样性,本文将花叶冬青(Ilex aquifolium)、月季(Rosa chinensis)和八角金盘(Fatsia japonica)3种木本植物引入潜流人工湿地,比较曝气前后系统对污水处理效果,植物的生物量与对TN、TP负荷减少的贡献率,根系形态与内部结构、根际微生物与基质酶活性的比较研究。结果表明,木本植物潜流人工湿地系统曝气后可以提高COD、NH4+-N、TN、TP的去除率,分别为6.99%、4.91%、10.25%、8.09%。湿地曝气有利于3种木本植物的生长,在曝气后比曝气前生物量增加了381.75、606.25和896.88 g/m2。曝气会促使木本植物长出大量须根,且曝气后的根系具有大量由薄壁细胞组成的通气组织的水生根特征。同时,曝气后增加了硝化菌数量,各处理单元中硝化菌增量分别为A:0.28 MPN×104/g,B:4.23 MPN×104/g,C:7.7 MPN×104/g。另外,曝气后植物根际基质中磷酸酶和尿酶的含量增加量大约在50%以上,这与系统中N和P的去除率提高的规律一致。
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| 关 键 词： | 木本植物 曝气 微生物 基质酶 |
| 收稿时间： | 2015-01-26 |
Influence of woody plants on a subsurface-flow constructed wetland system under aerated condition |
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| Chen Yonghua, Wu Xiaofu, Ji Zhihui, Ma Qun, Chen Mingli. Influence of woody plants on a subsurface-flow constructed wetland system under aerated condition[J]. Chinese Journal of Environmental Engineering, 2015, 9(9): 4199-4205. doi: 10.12030/j.cjee.20150917 |
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| Authors: | Chen Yonghua Wu Xiaofu Ji Zhihui Ma Qun Chen Mingli |
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| Affiliation: | 1.College of Environment Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China |
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| Abstract: | In order to increase diversity of the plant in constructed wetland, we applied three woody species (Ilex aquifolium, Rosa chinensis, and Fatsia japonica) to a subsurface-flow constructed wetland for sewage treatment, and compared the sewage treatment effects of the system, the plant biomass and the contribution of the plants to the rate of total nitrogen (TN) and total phosphorus (TP) load reduction, the root morphology and interior structure, and the activity of the root microbes and the matrix enzyme before and after aeration of the system. The results show that after aeration of the system, the removal rates of COD, NH4+-N, TN, and TP increased by 6.99%, 4.91%, 10.25%, and 8.09%, respectively, the biomasses of I. aquifolium, R. chinensis, and F. japonica increased by 381.75, 606.25, and 896.88 g/m2, respectively. The woody plants grew lots of fibrous roots and there were many characteristics of water roots consisting of parenchyma cells after aeration. After aeration of the system, the amounts of nitrifying bacteria in the processing units containing I. aquifolium, R. chinensis, and F. japonica, increased by 0.28 MPN×104/g, 4.23 MPN×104/g and 7.7 MPN×104/g, respectively. The increases of phosphatase and urease content in the plant rhizosphere matrix were more than 50%, which was consistent with the N and P removal rate law. |
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| Keywords: | woody plants aeration microbial matrix enzyme |
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