DO, ORP and PH as Control Parameters in an SBBR for Nitrogen Removal and Energy Saving

Abstract:

Sequencing batch biofim reactor (SBBR) can remove nitrogen by simultaneous nitrification and denitrification in the biofilm. Based on the relationship between the degradation of COD, NH3-N and ΣN in wastewater and the variation of DO, ORP and pH, the results showed that when DO and ORP rapidly increased and reached a platform (DO and ORP turning point) and pH value rapidly decreased and approached the lowest value (pH turning point), the NH₃-N and ΣN reduced to minimum. Utilizing DO, ORP and pH turning points as on-line controlling points to stop aeration ensured NH₃-N completely removed and the lowest ΣN. The effect control of aeration time could save energy.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 1684-1688
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.1684
• Online since: October 2011
• Authors: Tao Chen, Jun Li
• Keywords: Control, DO, Nitrogen Removal, Oxidation-Reduction Potential (ORP), pH, Saving Energy, SBBR

References

[1] Wilderer P. A., Irvine R. L., Goronszy M. C: Sequencing batch reactor technology. IWA Publishing, London, 2001.

DOI: 10.2166/9781780402246

[2] Kaballo H. P. Shock: Water Science and Technology. 35(1): 35-40 (1997).

[3] Irvine R. L., Wilderer P. A., Hams-Curt Flemming.: Water Science and Technology. 35(1): 1-10(1997).

[4] Daniel M. W: Water Research. 32(1): 254-257(1998).

[5] Wobus A. and Rosdke I: Water Research. 34(1): 279-287(2000).

[6] Li Jun, Peng Yongzhen, Gu Guowei, et. al.: Acta Scientiae Circumstantiae. 26(5): 728-733(2006). (In Chinese)

[7] Ou Changjin, Wu Hailie, Li J un, et. al.: Computer Measurement and Control. 14(12):1643-1645 (2006). (In Chinese)

[8] Zeng Wei, Peng Yongzhen, Wangg Shuying: Acta Scientiae Circumstantiae. 23(2) :252-256(2003). (In Chinese)

[9] Li Jun, Peng Yongzhen, Gu Guowei, et. al.: China Water and Wastewater. 22(7):17-21(2006). (In Chinese)