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각종 질소,인 제거공정에서 도출된 미생물 성장 동역학 계수 비교 분석
임세호 ( Se Ho Lim ),고광백 ( Kwang Baik Ko ),오영기 ( Young Khee Oh ) 한국물환경학회 2004 한국물환경학회지 Vol.20 No.6
In this study, some of bacterial growth kinetic parameters were delineated and evaluated for the biological nutrient removal processes such as the A²/O, 4stage-BNR, Intermittent Cycle Extended Aeration System(ICEAS) and Intermittently Aerated Cylindrical Oxidation Ditch(IACOD) processes. Y_H values for the ICEAS process ranged from 0.71 to 0.74, and were higher than those for the other processes. It seems to indicated that organic carbons uptaked by microorganism were more used up for cell synthesis rather than for energy components in the ICEAS process. b_H for the ICEAS and IACOD processes were lower than those for A²/O and 4stage-BNR processes. The μ_(max·A) for the ICEAS was higher than those for the other processes, which indicated that desirable operating conditions for nitrifying bacteria`s growth were established.
하수고도처리 공정내 호기성, 무산소성 및 혐기성 반응조에서 종속영양 미생물 생산계수, Y<sub>H</sub>의 비교분석
신정섭,고광백,이지영,임세호,강승현,박재한,Shin, Jung Sub,Ko, Kwang Baik,Lee, Ji Young,Lim, Se Ho,Kang, Seung Hyun,Park, Jae Han 한국물환경학회 2006 한국물환경학회지 Vol.22 No.3
Heterotrophic biomass yield coefficients, $Y_H$, for aerobic, anoxic and anaerobic reactors were successfully estimated for the two wastewater treatment plants, where one plant was operating in the $A^2/O$ process and the other was operating in the 4-stage BNR process. The estimation of $Y_H$ was undertaken by plotting the biomass COD concentrations versus the soluble COD concentrations in order to calculate the ${\Delta}biomass$ COD/ ${\Delta}soluble$ COD in each batch reactor. The batch reactors employed in this study were fed by filtered influent and mixed liquors in the ratio of 10:1, and operated in the aerobic, anoxic and anaerobic conditions, which represented the actual operating conditions for the $A^2/O$ and 4-stage BNR process. The average $Y_H$ values of the aerobic, anoxic and anaerobic reactor for the $A^2/O$ process were 0.52, 0.41 and 0.18 mg COD/mg COD, respectively, and those for the 4-stage BNR process were 0.58, 0.40 and 0.20 mg COD/mg COD, respectively. The average ratio of the $Y_H$ for aerobic reactors to those for the anoxic reactors were about 1:0.79 for the $A^2/O$ process, and about 1:0.69 for the 4-stage BNR process. The experimental method for anoxic and anaerobic $Y_H$ estimation shown in this study has turned out to be simple and efficient in its practical application.