Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지
DOI QR코드

DOI QR Code

Automatic T-P Coagulation Control System using an EC in the MSBR Process - Full Scale Study -

MSBR 공정에서 전기전도도를 이용한 인 제거 자동제어시스템 - 현장 적용 중심 -

  • Jang, Hee-seon (Watershed and Total Load Management Research Division, National Institute of Environmental Research) ;
  • Lee, Ho-sik (Department of Railroad Facility Engg., Korea National University of Transportation)
  • 장희선 (국립환경과학원 유역총량연구과) ;
  • 이호식 (한국교통대학교 철도시설공학과)
  • Received : 2016.10.30
  • Accepted : 2017.01.19
  • Published : 2017.01.30
Download PDF
⟨ Previous Next ⟩

Abstract

Many sewage treatment plants have applied the advanced technology of chemical coagulant system to remove phosporus in Korea. However there are some problems for the injection of optimum coagulant dosage. In order to solve these problems, the research related to the more cost-effective automatic total phosphorus coagulation control system using an EC(Electrical Conductivity) have been in progress. This study was conducted by the same process and operation method as the Lab-scale for public small town sewage treatment plant. First, it confirmed the correlation among the EC, PO4-P and coagulant dosage in the Lab-scale MSBR(Membrane Sequencing Batch Reactor) process. Next, it analyzed that correlation coefficient of EC and the coagulant dosage was 0.92 in the Full-scale MSBR process. As a result, not only T-P removal efficiency was doubled but also it satisfied the effluent water quality standard in a stable manner. In addition, by applying the automatic control system using the EC, compared to the fixed coagulant injection system the coagulant dosage could be reduced by 28%.

Keywords

References

  1. American Public Health AssociationAmerican Water Works Association Water Environment Federation (APHA, AWWA, and WEF). (1995). Standard Methods for the Examination of Water and Wastewater 19th Edition, American Public Health AssociationAmerican Water Works Association Water Environment Federation.
  2. Kim, C. G. (2015). A Study on the Automatic T-P Coagulation Control System Using an EC(Electrical Conductivity), Master's Thesis, Korea National University of Transportation, 49. [Korean Literature]
  3. Kim, J. H. (2010). Coagulation Process to Enhance Phosphorus Removal Rate of Secondary Effluent from Wastewater Treatment Plant, Master's Thesis, Kyunghee University, 105-108. [Korean Literature]
  4. Kim, S. G., Lee, H., and Jun, T. S. (2012). Development of the Automatic Control System for the Phosphorus Advanced Treatment in Sewage Treatment Plant, Journal of Korean Society on Water Environment, 28(2), 300-304. [Korean Literature]
  5. Kim, W. K., Yoo, H. S., Kim, K. H., Joeng, S. G., Jeong, I. S., Zoh, K. D., and Cho, I. H. (2011). Application of Total Phosphorus(TP) Treatment in Sewage Wastewater Treatment Plant using Charge Analyzer System Titrator (SW-CAST), Proceedings of the 2011 Spring Co-Conference of the Korean Society on Water Environment and Korean Society of Water and Wastewater, Korean Society on Water Environment and Korean Society of Water and Wastewater, 407-408. [Korean Literature]
  6. Ministry of Environment (MOE). (2011). Official Test Standards for Water Pollution, Ministry of Environment. [Korean Literature]
  7. Ministry of Environment (MOE). (2010). SEWERAGE ACT, Ministry of Environment. [Korean Literature]
  8. Seo, J. M. (2015). A Study on Coagulant Dose Optimization System for Total Phosphorus Removal in Sewage, Ph. D. Dissertation, University of Seoul, 147-151. [Korean Literature]
  9. Ministry of Environment (MOE). (2014). Public Sewage Treatment Plant Operation and Management Analysis Results, Ministry of Environment, 9. [Korean Literature]
  10. K-water Institute. (1996). A Study on the Development of Automatic Determination System of Coagulant Dosing(1st year), K-water Institute, 2. [Korean Literature]
  11. Yoon, D. S. (2013). Chemical Removal of Phosphorus from Wastewaters Using Iron Salt, Master's Thesis, Kyungnam University, 56. [Korean Literature]