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KMID : 0364820100460010027
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Korean Journal of Microbiology
2010 Volume.46 No. 1 p.27 ~ p.32
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The Development of Treatment System for Removing the Low Concentrated Nitrogen and Phosphorus Using Phototrophic Bacteria and Media
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Kim Sun-Jung
Lee Sang-Seob
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Abstract
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We used phototrophic bacteria to remove low concentrated organic materials (CODCr), nitrogen and phosphorus. We applied CODCr 37.3 mg/L, NH3-N 4.0 mg/L, and PO4 3--P 1.0 mg/L (C:N:P=100:10:1) in the batch test, and the removal efficiencies were shown as follow: CODCr 87.4%, NH3-N 46.3%, PO4 3--P 79.7%. The aerobic process with mixed phototrophic bacteria, ceramic media, and media KSP01 showed the removal efficiencies of CODCr, NH3-N, and PO4
3--P, each as 72.7% and 79.2%, respectively in the lab-scale reactor. The maximum PO4 3--P removal efficiency reached 92.6% by adjusting pH. There were three conditions used to remove NH3-N. The highest removal efficiency was
98.5% with 10.2 L/min of aeration in 1-2 reactors, and the result of applying river-water showed the high removal efficiency of NH3-N (82.8%). Therefore, this purification system may be useful to control nitrogen and phosphorus at low concentration in field.
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KEYWORD
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nitrogen removal, phosphorus removal, phototrophic bacteria
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