Feasibility of Combating Desertification Using Extremely Shallow Subsurface Flow Constructed Wetland

CAO Yafeng; REN Yongxiang; WANG Xinwei; CHEN Cancan; XIAO Hainan; LIU Longlong; XIAO Songli

doi:10.13961/j.cnki.stbctb.2015.04.027

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Feasibility of Combating Desertification Using Extremely Shallow Subsurface Flow Constructed Wetland

- Feasibility of Combating Desertification Using Extremely Shallow Subsurface Flow Constructed Wetland
- Bulletin of Soiland Water Conservation Vol. 35, Issue 4, Pages: 136-140(2015)
- 作者机构：
  
  1. 陕西省环境工程重点实验室西北水资源与环境生态教育部重点实验室西安建筑科技大学,陕西,西安,710055
  2. 陕西省建筑设计研究院有限责任公司,陕西,西安,710018
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.04.027
  CLC：
- Published：2015
- 稿件说明：
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CAO Yafeng, REN Yongxiang, WANG Xinwei, et al. Feasibility of Combating Desertification Using Extremely Shallow Subsurface Flow Constructed Wetland[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 136-140.
DOI：

CAO Yafeng, REN Yongxiang, WANG Xinwei, et al. Feasibility of Combating Desertification Using Extremely Shallow Subsurface Flow Constructed Wetland[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 136-140. DOI： 10.13961/j.cnki.stbctb.2015.04.027.

摘要

[目的] 探讨以城市污水作为植物生长的水源和肥源

以期同步实现沙漠化土地的快速修复和污水净化的可行性。[方法] 利用极浅型潜流人工湿地

湿地填料为细沙

栽培植物为高羊茅、黑麦草、狗牙根、芦苇和香蒲进行试验设置。[结果] 试验仅4个月

细沙容重减小了20%~23%

有机质至少增加了3.9倍

有效磷、pH值、电导率和孔隙率分别增加了16%~103%

3%~5%

1.7~2.6倍和16%~25%

与原细沙差异性显著(p<0.05)

而碱解氮、全磷和各湿地细沙理化性质无显著性差异(p>0.05)。[结论] 极浅型潜流人工湿地能够迅速增加细沙养分含量

改善细沙理化性质

以极浅型潜流人工湿地修复沙漠化土地可行。高羊茅和黑麦草可作为修复沙漠化土地的优选植物。

Abstract

[Objective] This paper aimed to elucidate the feasibility of using municipal wastewater as the sources of water and fertilizer for the growth of cultivated plant

in order to combating desertification and purifying the pollutants in the taste water. [Methods] Extremely shallow subsurface flow constructed wetlands (SSFCWs) were used to cultivate plants. In the wetlands

fine sand was selected as the substrate. Plants had Festuca arundinacea

Lolium perenne

Cynodon dactylon

Phragmites australis and Typha orientalis. [Results] After four months' cultivation using waste water in the wetlands

some indices differed significantly with that of original sand(p<0.05). For example

fine sand bulk density reduced by 20%~23%; organic matter increased over 3.9 times; available P

pH value

electrical conductivity and porosity increased by 16%~103%

3%~5%

1.7~2.6 times and 16%~25%

respectively. No significant differences of available N

total phosphorus among the original fine sand and substrates of different SSFCWs(p>0.05). [Conclusion] As significant improvements in nutrient contents and physi-chemical characteristics of fine sand were observed

the result demonstrated that it is feasible to restore desertification land using the extremely SSFCWs. It indicated that F. arundinacea and L. perenne could be used as the preferential plants for combating desertification.

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