Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Optimal Operation Condition of Livestock Wastewater Treatment Using Shortcut Biological Nitrogen Removal Process

단축질소제거 공정을 이용한 가축분뇨의 적정 처리조건 연구

  • Jin-Young Kang (Department of Water Environmental Research, Gyeonggi-do Institute of Health and Environment) ;
  • Young-Ho Jang (Department of Water Environmental Research, Gyeonggi-do Institute of Health and Environment) ;
  • Byeong-Hwan Jeong (Department of Water Environmental Research, Gyeonggi-do Institute of Health and Environment) ;
  • Yeon-Jin Kim (Department of Water Environmental Research, Gyeonggi-do Institute of Health and Environment) ;
  • Yong-Ho Kim (Department of Water Environmental Research, Gyeonggi-do Institute of Health and Environment)
  • 강진영 (경기도보건환경연구원 물환경연구부) ;
  • 장영호 (경기도보건환경연구원 물환경연구부) ;
  • 정병환 (경기도보건환경연구원 물환경연구부) ;
  • 김연진 (경기도보건환경연구원 물환경연구부) ;
  • 김용호 (경기도보건환경연구원 물환경연구부)
  • Received : 2023.06.30
  • Accepted : 2023.08.25
  • Published : 2023.09.30
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Abstract

The feasibility of applying the shortcut nitrogen removal process to treat livestock wastewater on individual farms was examined, and appropriate operating parameters were established. As a result,, it was determined that the nitrification reaction was carried out under 550 mg/L of ammonium nitrogen concentration, but it was less effective under conditions of high ammonia concentration. Consequently, it was confirmed that a partial injection of inflow water was necessary to minimize the effects of ammonia toxicity. Following the sequential batch reactor (SBR) operation results, it was difficult to achieve the effluent quality standard without an external carbon source. Also, selection of the appropriate hydraulic retention time was critical for the optimal SBR operation. Following the livestock farm application, with external carbon source injecting, the total nitrogen concentration in the effluent was 85.1 mg/L. This result revealed that the standard could be accomplished through a single treatment on individual livestock farms. The ratio of nitrite nitrogen to ammonia nitrogen in the effluent was verified to be suitable for implementing the anammox process with a 10 days of hydraulic retention time. This study demonstrated the potential applicability of process in the future. However, in order to apply to livestock farms, managing variations in wastewater load across individual farms and addressing reduced nitrogen oxidation efficiency during the winter season are crucial.

Keywords

Acknowledgement

본 논문은 환경부의 재원으로 국립환경과학원의 지원을 받아 수행하였습니다(NIER-2022-01-03-014).

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