Microbial Community Analysis in Bio-Filter Bed of Iron and Manganese Removal Treating High Iron, Manganese and Ammonia Nitrogen Groundwater

Abstract:

The integrated process of spray aeration, falling water aeration and bio-filter bed was used for treating groundwater with high iron, manganese and ammonia nitrogen (NH₄⁺-N). The removal efficiencies of iron, manganese and NH₄⁺-N reached 99.1%, 95.0% and 85.2%, and corresponding effluent iron and manganese decreased to 0.1 and 0.05 mg/L. Microbial analysis results indicated that the β-Proteobacteria was predominant microorganisms, in which Gallionella and Leptothrix were main iron-removal bacteria and manganese-removal bacteria, respectively. Simultaneously, Pseudomona, belonged to γ-Proteobacteria, could absorb and oxidize free manganese to be manganese dioxide (MnO₂) by extracellular oxidase.

• Periodical: Advanced Materials Research (Volume 777)
• Pages: 238-241
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.777.238
• Online since: September 2013
• Authors: Xiao Rong Kang, Ya Li Liu
• Keywords: Ammonia, Ground Water, Manganese Oxidizing Bacteria, Manganese Removal

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