Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (9): 111-116.

• Environment Science & Technology • Previous Articles     Next Articles

Screening of Plants in Constructed W etland with Low-Concentration Domestic Wastewater in South China

Hu Yong-you1  Wang Xin1  Zhang Tai-ping1  Guo Qing-wei1  Hu Chun-ming1  Zheng Bing-hui2   

  1. 1.School of Environmental Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China;2.Chinese Research Academy of Environmental Sciences,Beijing 100012,China
  • Received:2005-10-14 Online:2006-09-25 Published:2006-09-25
  • Contact: 胡勇有(1964-)，男，教授，博士生导师，主要从事水环境与水污染控制技术研究 E-mail:ppyyhu@scut.edu.cn
  • About author:胡勇有(1964-)，男，教授，博士生导师，主要从事水环境与水污染控制技术研究
  • Supported by:

    国家“863”计划资助项目(2003AA601040)

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Abstract:

In order to widen the application of constructed wetland, the experiments to screen 1 4 species of candi-date plants were caried out in pots with low-concentration domestic wastewater. Experimental results indicate that.as compared with the control without plant，most units with plants have no significant improvement in the caDabilitv of COD removal,but have significant improvement in the capability of nitrogen and phosphorus removals. Further-more,when the hydraulic retention time is 8 and 24 h0urs, the average contributions of the plant uptake to nitr0gen removal respectively reach 44.5% and 40.0%, and those for phosphorus removal respectively reach 20.9% and 25.1% .All these indicate that,instead of the capability of COD removal, the capability of nitrogen and phospho-rus removals can be used as a criterion for screening plants suitable to constructed wetland. also with the fact0rs such as the endurance of hard environment and the ornamental effect of the plant being considered.

Key words: constructed wetland, plant, domestic wastewater, screening