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

Abstract:

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%

• Periodical: Advanced Materials Research (Volumes 374-377)
• Pages: 913-918
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.374-377.913
• Online since: October 2011
• Authors: Ya Feng Li, Jia Yuan Liu, Yan Zhang
• Keywords: Chemical Oxygen Demand (COD), DO, Effect Factor, Nitrogen Remove, Temperature

References

[1] Zhang Zijie. Drainage works [M]. China Architecture & Building Press.1996.

[2] Voets J P,VanstaenH,VerstraeteW.Removal ofnitrogen from highly nitrogenouswastewaters[J]. JWPCF, 1975,47(3): 394-398.

[3] YooH, AhnKH, LeeH J,etal. Nitrogen removal from synthetic wastewater by simultaneous nitrification and denitrification (SND) via nitrite in an intermittently-aerated reactor [J].WaterRes, 1999, 33(1): 145-154.

DOI: 10.1016/s0043-1354(98)00159-6

[4] Villaverde S, Fdz-PolancoF,García PA. Nitrifying biofilm acclimation to free ammonia in submerged biofilters:start-up influence [J].WaterRes, 2000, 34(2): 602-610.

DOI: 10.1016/s0043-1354(99)00175-x

[5] Zhou Yangyuan.Environmental conditions and the study of simultaneous nitrification and denitrification[D].Shanghai:Tongji University, 2001.

[6] LIU Jun; PAN Deng; WANG Bin.Effect of DO and C/N on simultaneous nitrification and denitrification in SBR technique[J]. Journal of Beijing Technology and Business University (Natural Science Edition)，2003，21（2）.

[7] Zhang Peng; Zhou Qi; Qu Jilin.Study progress on simultaneous nitrification and denitrification [J]. Chongqing Environmental Science，2001，23（6）.

[8] Fang Qian; Zhang Chaosheng; Zhang Kefang.Effect of sludge age and pH value on simultaneous nitrification and denitrification(SND)[J]. Journal of Guangzhou University(Natural Science Edition),2008,7(3):50-54.

[9] Zhang Xiaoling; Li Bin; Yang Yongzhe. Short-cut Nitrification and Simultaneous Nitrification and Denitrification in SBR at Low DO [J]. China Water & Wastewater, 2004, 20(5): 13-16.