Optimization of Nitrogen Removal by Treating Real Domestic Sewage which is Low C/N in A/O Process

Abstract:

By treating real domestic sewage which is low C/N in A/O process ，results showed that different removal rates occured under different organic loadings、internal reflux ratio (R) without external carbon source . It was demonstrated that with the improvement of organic loading, F/M improved from 0.22kg/(kgMLSS•d) to 0.28kg/(kgMLSS•d), removal rates of TN and COD were improved by 4.84% and 16.55% respectively. Because lower C/N, TN and COD removal had no obvious enhancement by elevating R from 150% to 250% with organic loading is 0.28kg/(kgMLSS•d).

• Periodical: Advanced Materials Research (Volumes 573-574)
• Pages: 589-593
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.573-574.589
• Online since: October 2012
• Authors: Er Long Jiao, Chun Di Gao, Kun Hao, Li Wang
• Keywords: A/O Process, Internal Recycle Ratio, Organic Load

References

[1] ZHANG Zijie, LIN Rongchen, et al. Drainage engineering [M]. 4th edition. Beijing: China Architecture & Building PRESS, 2002: 313.

[2] PENG Yong-zhen, MA Yong, et al. Development and study of internal recirculation flow control strategy in a/o nitrogen removal process. Journal of beijing university of technology. 2004(02).

[3] WANG Feng-xiang, LONG Teng- rui , et al. Study on Factors Affecting the Activated Sludge Bulking and Its Control. Journal of Chongqing Jianzhu University. 2007(1): 117-121.

[4] Peng Y Z, Chen Y, Peng C Y, et al . Nitrite accumulation by aeration controlled in sequencing batch reactors treating domestic wastewater [ J] . Water Sci Tech, 2005, 50( 10) : 35-43.

DOI: 10.2166/wst.2004.0603

[5] YuanZ, BogaertH, VanrolleghemP. Control of external carbon addition to predenitrifying systems [J]. JEnvironEngr, 1997 , 123(11) : 1080 2 1086.

[6] SamuelssonP, CarlssonB. Feed forward control of the external carbon flow rate in an activated sludge process[J]. WatSciTech, 2001 , 43(1) : 115 2 122.

[7] GUO Dong-yan, LI Duo-song, et al, Simultaneous Nitrification and Denitrification Technology[J]. Safety and Environmental Engineering. 2009(3): 41-44.

[8] WANG Shuying, PENG Yongzhen, et al. The control parameter of SBR process and its reaction time using DO [ J]. China Environmental Science, 1998, 18( 5): 415418. ( in Chinese).

[9] YuanZG, AddrianO, PernilleI. Controlofnitraterecirculationflowinpredenitrificationsystems[J]. WatSciTech, 2002 , 45 (4 Π5) , 29 2 35.

[10] MA Yong, PENG Yong-zhen, et al. Establishment and application of nitrification and denitrification expert system in A/O process[J] China Environmental Science. 2005(2): 252-256.

[11] National Environmental Protection Agency, Water and wastewater monitoring and analysis methods, , Editorial, water and wastewater monitoring and analysis methods, 4th edition [M], Beijing China Environmental Science Press, (2002).