Purification Effect of Vertical-Flow Constructed Wetlands with Multi-Size Combined Filter Medium

Xiang Ling Zhang; Lu Xu; Jun Jie Chen; Liang Hu

doi:10.4028/www.scientific.net/AMR.726-731.1720

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731Purification Effect of Vertical-Flow Constructed...

Purification Effect of Vertical-Flow Constructed Wetlands with Multi-Size Combined Filter Medium

Abstract:

Three columns filled with multi-size combined medium were utilized in the simulative vertical-flow constructed wetland systems to treat wastewater at hydraulic loading rate of 2000-3000 mm/d, that the same kind of media including biological ceramsite, anthracite and zeolite in each column. Comparative analyses were made in treatment performances between multi-size medium and single medium. The results showed that compared with the treatment performances of single medium, the purifying effect had great influence by the multi-size combined medium which were made up of same kind and different size of filter medium. Contrast with the corresponding single medium, the average removal efficiencies of COD_Cr, Total Nitrogen (TN), and Total Phosphorus (TP) were increased obviously which were purified by the multi-size combined medium. Good performances were achieved in terms of removal of BOD₅ and COD_Cr in the column of multi-size combined biological ceramsite medium. The average removal efficiencies of TN were great in the column of multi-size combined zeolite medium. Good performances were also achieved in terms of removal of TP in the column of multi-size combined anthracite medium.

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Periodical:

Advanced Materials Research (Volumes 726-731)

Pages:

1720-1723

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.726-731.1720

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Online since:

August 2013

Authors:

Xiang Ling Zhang*, Lu Xu, Jun Jie Chen, Liang Hu

Keywords:

Anthracite, Biological Ceramsite, Multi-Size Combined Medium, Treatment Performances, Vertical-Flow Constructed Wetlands, Zeolite

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* - Corresponding Author

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