Startup of Denitrification Bioreactor and Influence of Temperature and DO for Treatment

Abstract:

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The sewage is used for startup and stable operation of the test, Startup in simultaneous nitrification-denitrification of Denitrification Bioreactor and Influence of Temperature and DO for Treatment was studied in the test. The results showed that, When the temperature was 30 degree Celsius, DO was 0.3-0.5mg/L,pH was 8 and reflux ratio was 300%, the removal rate of COD,ammonia nitrogen and total nitrogen reached stability after domestication of 58 days, and the quality of effluent achieved the A national standard. There is small influence of temperature for COD removal and large influence of temperature for ammonia nitrogen removal. Biological nitrogen removal process was not fit to operate in low temperature, and the suitable temperature was from 20 degree Celsius to35 degree Celsius. With DO increasing, the removal rates of COD and NH4+-N was increasing and then kept in a constant value. When DO was 0.4 mg/L, the removal rate of TN reached the maximum and it was 75.86%

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Edited by:

Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du

Pages:

913-918

DOI:

10.4028/www.scientific.net/AMR.374-377.913

Citation:

Y. F. Li et al., "Startup of Denitrification Bioreactor and Influence of Temperature and DO for Treatment", Advanced Materials Research, Vols. 374-377, pp. 913-918, 2012

Online since:

October 2011

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$35.00

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