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- 저자 : 김응호 ( Jae Roh Park (검색결과 4 건)
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침지형막분리법과 응집체첨가활성슬러지법의 조합에 의한 하수중의 유기물 및 인제거 특성에 관한 연구
박재로(Jae Roh Park),김응호(Eoung Ho Kim) 한국물환경학회 2000 한국물환경학회지 Vol.16 No.3
The objective of this research is to show whether Alum-MBR (Membrane Bio-Reactor) system is a technically feasible and economically competitive process for organic and phosphorus removal of municipal sewage. In Alum-MBR system, organic material and phosphorus are removed by biological, chemical reaction and membrane separation mechanism. The advantages of Alum-MBR system were listed as high treability, easy maintanance and automatic operation. Membrane used in this system was polyethylene hollow fiber microfiltration which surface treated hydrophilic with a pore size of 0.1㎛ and surface area of 4㎡ and two module was immersed to aeration basin of 0.4㎥. Jar test was conducted to find out weather chemicals are suitable for phosphorus removal and optimal dosage rate of chemicals and back-up test in a small-scale pilot plant was conducted to confirm of removal effect of organic material and phosphorus. The operation conditions of Alum-MBR system were fixed at suction-idle time of l0min-5min, permeation flux of 0.015㎥/㎡/hr, aeration intensity of 300ℓ/㎥/min. As the result of dosing Alum into MBR, flux was stable and permeate pressure was bring down remarkably. T-P concentration of permeated water always lower than target water quality of l㎎/ℓ.
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2단형 막분리 활성슬러지법(Two Stage MBR)에서 내부순환을 변화와 응집제 첨가에 의한 질소 및 인제거 특성에 관한 연구
박재로 ( Jae Roh Park ),임현만 ( Hyun Man Lim ),김응호 ( Eoung Ho Kim ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.2
Laboratory-scale membrane bioreactor added alum into the anaerobic basin as a flocculant and adsorbent was carried out to find removal efficient of nitrogen and phosphorus components in the mixed liquid and weather or not maintaining the stability for the permeate flux and pressure at various internal recycle conditions. It was found that denitrification efficient of maximum 65% was obtained when the ratio of internal recycle was 3Q. Additionally when the ratio of internal recycle was fixed at 3Q, BOD_5 and T-P concentration of permeate was much more reduced compared to not added alum in anaerobic basin but T-N concentration of permeate was relatively increased. In case of added alum as the flocculant and adsorbent in anaerobic basin, the permeate flux was maintained above 10ℓ/㎡/hr but the permeate pressure was relatively higher than alum was not added in anaerobic basin.
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2단형 막분리 활성슬러지법(Two Stage MBR)의 운전 특성에 관한 고찰
박재로 ( Jae Roh Park ),임현만 ( Hyun Man Lim ),김응호 ( Eoung Ho Kim ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.2
Two-stage membrane bioreactor using submerged hollow fiber membrane was applied in laboratory scale to treat nitrogen and phosphorus of domestic wastewater. Alum as the flocculant and adsorbent was added into the anaerobic basin of two-stage membrane bioreactor and mixed liquid of aerabic basin was recycled to the anaerobic basin for the purpose of nitrogen removal. Experiment was carried out to find removal efficient of phosphorous and nitrogen components in the mixed liquid, and the stability of the permeate flux and pressure of two-stage membrane bioreactor. In case of alum was added as the flocculant and adsorbent into the anaerobic basin, soluble phosphorus removal efficient was relatively higher and total permeate resistance (Rtot) was more increased out nitrogen removal efficient was lower as the result of lack of alkalinity and insufficient nitrification process than the case of alum was not added.
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중공사 정밀여과막 활성슬러지법 ( ASMF ) 에 의한 생활하수의 분리특성에 관한 기초연구
박재로,지재성,김응호 ( Jae Roh Park,Chai Sung Gee,Eoung Ho Kim ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.2
The Purpose of this study is to investigate the seperation characteristics of high concentration domestic sewage using activated sludge process combined with hollow fiber microfiltration membrane and to find out the operating parameter for ASMF Process. A hollow fiber microfiltration membrane module with a pore size 0.1micron was immersed in the aeration basin(0.4㎥) and treated water was filtered through the membrane by intermittent suction with low pressure of 400mmHg(about 0.5kgf/㎠). In this experiment, various operational mode were applied to investigate stable permeate flux conditions as well as optimal suction-idle cycle and effective aeration intensity. The BOD, COD and LAS removal efficiency were higher than 85% and SS, Turbidity removal efficiency was about 100% but color removal efficiency was lower than 60%. As the results, the stable permeate flux range was 9 ℓ/ ㎡/hr∼12 ℓ/ ㎡/hr, the optimal suction-idle cycle was 10min-10min and the aeration intensity condition of 320 ℓ/㎥min was sufficient to keep both stable permeate flux and aerobic basin condition. During the experimental period, cumulating fouling and internal clogging in the membrane were inevitable to some extent. However, the optimal permeate flux, intermittent suction, and low suction pressure operation could prevent the unrecoverable fouling and dead end of operation without frequent chemical cleaning.
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