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J Korean Soc Environ Eng > Volume 41(6); 2019 > Article
J Korean Soc Environ Eng 2019;41(6): 301-310. doi: https://doi.org/10.4491/KSEE.2019.41.6.301
유동성 생물막 담체를 이용한 수처리 반응조 내 수리거동 고찰에 관한 연구 (II) - CFD 모사를 통한 검증 -
김미나1, 윤석민2, 김종오2, 정진욱3, 박노석2
1한국시설안전공단
2경상대학교 건축도시토목공학부 및 공학연구원
3삼성 엔지니어링
A Study on the Hydraulic Behavior in Moving Bed Biofilm Reactor for Water Treatment (II) - Verification through CFD simulation -
Mi-na Kim1, Sukmin Yoon2, Jong-Oh Kim2, Jin-Wook Chung3, No-Suk Park2
1Korea Infrastructure Safety and Technology Corporation
2Division of Architecture, Urban and Civil Engineering and Engineering Research Institute, Gyeongsang National University
3Samsung Engineering Technology Center
Corresponding author  No-Suk Park ,Tel: 055-772-1798, Fax: 055-772-1799, Email: nspark@gnu.ac.kr
Received: January 22, 2019;  Revised: February 22, 2019;  Accepted: March 2, 2019.  Published online: June 30, 2019.
ABSTRACT
In this study, tracer tests were carried out for pilot MBBR (Moving Bed Biofilm Reactor) and CFD simulation on transient state was performed for the most economically operating condition, which had been derived from actual tracer tests. As a result, the streamline of the water in the reactor showed a similar flow velocity distribution of about 0.5 m/s except for the outlet of the inside circulator. In addition, the streamline of air had flow velocities of less than 0.8 m/s similar to that of water flow. It can be seen that the hydraulic behavior of the pilot MBBR showed a typical ideal CSTR reactor characteristics. When comparing the results of the tracer test and the CFD simulation performed on the pilot plant, it is found that the absolute values of the hydraulic behavior index from actual tracer tests were almost identical to those of CFD simulated values. From the viewpoint of the decimal places and the magnitude of order, The error rate is about 30% or less.
Key Words: MBBR (Moving Bed Biofilm Reactor), Tracer test, CFD (Computational Fluid Dynamics) simulation, CSTR (Complete Stirrer Tank Reactor), Hydraulic Efficiency Index
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