Pollutants Removal and Analysis of Microbial Community of Malodorous River in BFG-IVCWs

Abstract:

The changes of concentrations of pH, DO, COD_Cr, NH₄⁺-N and NO₃^--N in Biofilm Grid-Integrated Vertical-flow Constructed Wetlands（BFG-IVCWs）by treating the urban malodorous river were measured. After 45 days, DO had its own distribution and changing regulation, the removal rate of COD_Cr reach to 45%, at meantime, the removal rate of NO₃^--N are over 50%. The diversity of microbial community and its succession were analyzed by PCR-DGGE fingerprint. The result shows: the removal rate of COD_Cr and NH₄⁺-N along the river flow gradually rises, and the removal rate of NO₃^--N rises at last. The removal of pollutants mainly happened in the down-flow system of the BFG-IVCWs. The differences of characters of biofilm and environmental condition of different positions made the microbial community structure diversity variable. Three kinds of biofilms (W3, W5 and W7) were analyzed with Shannon-Wiener and Cs indices and the value in position W3 was the highest.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 3045-3052
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.3045
• Online since: May 2012
• Authors: Yi Fan Zhang, Yong Zhang, Min Sheng Huang, Huan Xu, Yan He
• Keywords: Biofilm-Grid, Constructed Wetland, Malodorous River, PCR-DGGE Fingerprint

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