期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 155, 期 -, 页码 106-116出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2012.01.022
关键词
Wastewater treatment; Zeolite; Bauxite; Organic matter; Nutrients
类别
资金
- General Secretariat of Research and Technology (GSRT) of Greece
Various gravity filters containing zeolite, bauxite and carbonate material were constructed and operated for 3 years, to provide further treatment of the effluent of a pilot-scale Vertical Flow Constructed Wetland (VFCW). Results showed a significant improvement of the VFCW effluent quality at a residence time of 1 day. Zeolite was more effective in nitrogen and organic matter removal, while bauxite in phosphorus retention. The carbonate material had the lowest efficiency among all filter materials used. The filter containing a 50-50% mixture of zeolite and bauxite showed the highest efficiency in pollutant removals. The increase of the residence time from 1 to 2 days did not show a respective statistically significant increase in removal rates. Temperature did not significantly affect the performance of the filters, with the exception of phosphorus removal. (C) 2012 Elsevier Inc. All rights reserved.
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