지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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이 논문의 연구 히스토리 (2)
2012
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The settling of a sequencing batch reactor (SBR) is a very important process to polish the effluent water quality and time-consuming process compared to the other process cycle to remove nutrient and carbon compounds. To detect the completion point of settling, an automatic detection and control algorithm for a settling time of SBR was developed using Oxidation-Reduction Potential (ORP) profile. To extract the relationship between the ORP profiles and sludge settling, various ORP profiles and Sludge Blanket Height (SBH) were collected at three range of SVI(20∼50, 50∼100, over 100) and four MLSS concentrations (2000, 4000, 6000, 8000 mg/L) for each SVI categories. With collected profiles, it was found that the completion of sludge settling and ORP profile's stabilization point have a proportional relationship. Based on this observational result, the Moving Least Squre Method (MLSM) for the ORP profile was used to detect ORP profile's stabilization point. However, for a special case of bulking sludge, the detected settling completion point and automatic effluent decanting has possibility of sludge wash-out. To deal with this problem, the control algorithm was modified by referring DO value to detect existence of sludge at the high level of the reactor. The developed algorithm was verified through the settling test and MLSS measurement of the supernatant for the bulking sludge and showed its good detection performance.
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참고문헌 (14)
참고문헌 신청
Carpentier, J / 1989 / Oxidation reduction potential (ORP) regulation as a way to optimize aeration and C, N and P removal : experimental basis and various full-scale examples / Wat. Sci. Tech 12(10):1209~1223
Cohen, A / 1997 / Application of computational intelligence for on-line control of a sequencing batch reactor(SBR) at Morrinsville sewage treatment plant / Wat. Sci. Tech 35(10):63~71
Cho, B.C / 2001 / Development of a real-time control strategy with artificial neural network for automatic control of a continuous-flow sequencing batch reactor / Wat. Sci. Tech 44(1):95~104
Kim, H / 2001 / pH and oxidation-reduction potential control strategy for optimization of nitrogen removal in an alternating / Wat. Envir. Res 73(1):95~101
Mikosz, J / 2001 / Use of computer simulation for cycle length adjustment in sequencing batch reactor / Wat. Sci. Tech 43:61~68
Cohen, A / 1997 / Application of computational intelligence for on-line control of a sequencing batch reactor(SBR) at Morrinsville sewage treatment plant / Wat. Sci. Tech 35(10):63~71
Cho, B.C / 2001 / Development of a real-time control strategy with artificial neural network for automatic control of a continuous-flow sequencing batch reactor / Wat. Sci. Tech 44(1):95~104
Kim, H / 2001 / pH and oxidation-reduction potential control strategy for optimization of nitrogen removal in an alternating / Wat. Envir. Res 73(1):95~101
Mikosz, J / 2001 / Use of computer simulation for cycle length adjustment in sequencing batch reactor / Wat. Sci. Tech 43:61~68
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