Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

Control and Nitrogen Load Estimation of Aerobic Stage in Full-Scale Sequencing Batch Reactor to Treat Strong Nitrogen Swine Wastewater

  • Poo, Kyung-Min (Water Environment & Remediation Center, Korea Institute of Science and Technology) ;
  • Im, Jeong-Hoon (Dept. of Environmental Engineering, Pusan National University) ;
  • Ko, Joo-Hyung (Water Environment & Remediation Center, Korea Institute of Science and Technology) ;
  • Kim, Ye-Jin (Dept. of Environmental Engineering, Pusan National University) ;
  • Woo, Hae-Jin (Dept. of Environmental Engineering, Pusan National University) ;
  • Kim, Chang-Won (Dept. of Environmental Engineering, Pusan National University)
  • Published : 2005.09.30
⟨ Previous Next ⟩

Abstract

Three different control methods based on oxidation reduction potential (ORP) and dissolved oxygen (DO) for determining aeration time were evaluated for swine wastewater treatment at full-scale SBR. For determining the Ending Point of Ammonia Oxidation (EPAO), the plateau in ORP profile, the derivative of DO, and absolute DO were tested. Below 0.5 kg $NH_4^+-N/m_3$.day of influent loading rate, three control methods produced good results; however, above this loading rate, only absolute DO method was feasible. The volumetric ammonia nitrogen load at the sub-cycle (Kg $NH_4^+-N/m_3$/sub-cycle) had an effect on the period of aeration. To put it more concretely, the higher loading rate required a longer ammonia nitrogen oxidation period. To estimate nitrogen load, the length of low DO period, which was defined as the required time to reach 3 mg DO/l from the start of aeration, was the most proper parameter.

Keywords

References

  1. Al-Ghusain, I. A. and Hao, O. J., 'Use of pH as Control Parameter for Aerobic/Anaerobic Sludge DigestioU:' J. Envir. Engrg., 121(3),225 (1995) https://doi.org/10.1061/(ASCE)0733-9372(1995)121:3(225)
  2. Andreottola, G, Foladori, P. and Ragazzi, M., 'On-line Control of a SBR System for Nitrogen Removal from Industrial Wastewater,' Wat. Sci.Tech, 43(3), 93 (2001)
  3. Paul, E., Plisson, S. S., Mauret, M. and Cantet, J., 'Process State Evaluation of Alternation Oxic-anoxic Activated Sludge using ORP, pH, and DO,' Wat. Sci. Tech, 38(3), 299 (1998) https://doi.org/10.1016/S0273-1223(98)00469-7
  4. Plisson, S. S., Capdeville, B., Mauret, M., Degum, A. and Baptiste, P., 'Real-time Control of Nitrogen Removal using three ORP Bending Points: Signification, Control Strategy and Results,' Wat. Sci. Tech, 33(1),275 (1996) https://doi.org/10.1016/0273-1223(96)00180-1
  5. Poo, K. M., Jun, B. H., Lee, S. H., Im, J. H., Woo, H. J. and Kim, C. W, 'Treatment of Strong Nitrogen Swine Wastewater at Full-scale Sequencing Batch Reactot,' Wat. Sci. Tech, 49(5-6),315 (2004)
  6. Yoo, C. K., Lee, J. M. and Lee, I. B., 'Nonlinear Model-based Dissolved Oxygen Control in a Biological Wastewater Treatment Process,' Korean J Chem. Eng., 21, 14 (2004) https://doi.org/10.1007/BF02705375
  7. Zipper, T., Fleischmann, N. and Haberl, R., 'Development of a New System for Control and Optimization of Small Wastewater Treatment Plants using Oxidation-Reduction Potential (ORP),' Wat. Sci. Tech, 38(3), 307 (1998) https://doi.org/10.1016/S0273-1223(98)00470-3