Evaluation of an Aerobic Denitrifying Bacterium for Wastewater Treatment

Abstract:

An aerobic denitrifying bacterium isolated from sludge was evaluated for water treatment application. The denitrification reaction condition was optimized using orthogonal experiment as temperature 30°C,pH7.0 and shaking speed 250rpm. The highest denitrification rate observed at 24h in the optimization experiment was 94.8%. Temperature was confirmed to be the most significant one in the four factors affecting the denitrification efficiency. In a comprehensive evaluation experiment for printing-dying wastewater treatment, the bacterium showed a satisfying water purification effects with obvious decreasing of COD, total phosphorous concentration and nitrate. The highest NO3--N removal rate occurred on day 3, which reached 94.2%.

• Periodical: Advanced Materials Research (Volume 621)
• Pages: 278-282
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.621.278
• Online since: December 2012
• Authors: De Yong Zhang, Xiu Ying Shen, Xiao Lu Xu, Yin Lu, Fei Lin Hao
• Keywords: Aerobic Denitrifying Bacteria, Denitrification Technology, Wastewater Treatment

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