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Advanced wastewater treatment capacity and growth of Chlorella vulgaris by nitrogen and phosphorus concentrations

N, P 농도에 따른 Chlorella vulgaris의 성장 및 하수고도처리능 평가

  • Received : 2012.12.18
  • Accepted : 2013.02.08
  • Published : 2013.02.15

Abstract

The growth and removal capacity of nitrogen and phosphorus of Chlorella vulgaris were evaluated in artificial wastewater with different nitrogen and phosphorus concentrations as element growing components for microalgae growth. The nitrogen concentration was varied in 9, 15, 30 and 60 mg-N/L with fixed phosphorus concentration of 3 mg-P/L. The growth and phosphorus removal capacity of C. vulgaris were high at initial nitrogen concentration of 15 and 30 mg-N/L, and the corresponding N/P ratios calculated were 5 and 10. In the case of varying in 1.5, 3, 6 and 10 mg-P/L of phosphorus concentration with fixed nitrogen concentration of 30 mg-N/L, the growth and removal capacity of nitrogen and phosphorus were excellent with phosphorus concentration of 3 and 6 mg-P/L. The corresponding N/P ratios were shown as 10 and 5. Therefore, the appropriate N/P ratio was concluded between 5 and 10 for wastewater treatment using C. vulgaris.

Keywords

Autotrophic microalgae;Chlorella vulgaris;Nitrogen removal;Phosphorus removal;N/P ratio

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Acknowledgement

Supported by : 한국연구재단