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RISS 인기검색어
- 검색키워드
- 저자 : 김병군(Byong Goon Kim) (검색결과 5 건)
- 무료
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김병군(Byong Goon Kim),서인석(In Seok Seo),박승국(Seung Kook Park),신익상(Ik Sang Shin) 한국물환경학회 1999 한국물환경학회지 Vol.15 No.3
The KOMIAE process(KOWACO Modified Intermittent Aeration process) for nitrogen and phosphorus removal was investigated to find an optimum aerobic/anoxic time, optimum HRT and to evaluate the effect of temperature and influent C/N ratio. In this research, a 1.7㎥ pilot plant was used and fed with domestic wastewater which contained 100.8㎎/L of BOD, 22.3㎎/L of T-N and 2.11㎎/L of T-P on average. From the experimental results, the removal efficiency of COD_(mn), T-N and T-P were 75%, 75% and 90% respectively. The optimum aerobic/anoxic time and optimum HRT in KOMIAE process were 2/2hour and 8hour respectively. Nitrogen removal in KOMIAE process was influenced on temperature and influent C/N ratio. In the case of 20℃, the nitrogen removal efficiency was 78% but the nitrogen removal efficiency was lower than 46% at 15℃. For the purpose of 80% of nitrogen removal efficiency, the influent C/N ratio should be over 8.
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MIAP 를 이용한 도시하수의 COD 및 질소 제거특성
전항배(Hang Bae Jun),김병군(Byong Goon Kim),서인석(In Seok Seo),이상형(Sang Hyung Lee) 한국물환경학회 2000 한국물환경학회지 Vol.16 No.1
A Modified Intermittent Aeration Process (MIAP) composed of a intermittent aerobic reactor followed by aerobic and anoxic reactors in series was developed for removal nitrogen from the sewage having low TCOD/T-N ratio easily encountered in local area. The intermittent aerobic reactor of MIAP was operated in the several combinations of aeration/unaeration, such as 15min/15min, 30min/45min and 60min/60min. And organic loading effect on nitrogen removal was studied by adding glucose to the raw sewage. TCOD and SCOD removal was complete in any operating conditions, so the effluent TCOD showed below 30 ㎎/L. T-N removal efficiency was as high as 90% at TCOD/T-N ratio of 8.5 with glucose addition, however, that was lowered to 68% at TCOD/T-N ratio of 5.1 without glucose addition. In MIAP, the consumed COD to denitrify 1㎎ of nitrate was 6.6 ㎎, and total COD requirement to remove l.0㎎ of T-N was 7.8 ㎎. Nitrate in effluent was 12 ㎎/L without glucose addition, and it did not changed much at the different combinations of aeration/unaeration. Removal characteristics of COD and T-N did not changed at the different combinations of aeration/unaeration, however, nitrate was fluctuated at each beginning of the changed operating conditions.
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DynaFlow 공정을 이용한 양돈폐수의 유기물 질소 인 동시처리
박승국(Seung Kook Park),김병군(Byong Goon Kim),원성연(Seung Yeon Weon),이상일(Sang Ill Lee) 한국물환경학회 2000 한국물환경학회지 Vol.16 No.1
2 stage IAAS (intermittently aerated activated sludge) and DynaFlow (dynamic flow intermittently aerated activated sludge) systems without anaerobic reactor were applied to treat swine wastewater of high strength of organic and nitrogen contents. COD_(cr), TKN and total phosphorus concentration in influent were averaged to 4, 300㎎/L, 650㎎-N/L and 68㎎-P/L, respectively. Removal efficiency of total nitrogen was obtained to over 92%. However, as increase of nitrogen loading to over 0.6㎏-N/㎥ ·day, nitrogen removal efficiency was dropped to 80%. NO₂-N and NO₃-N concentration were increased up to 55㎎/L and 30㎎/L, respectively. The increase of NO_x-N concentration can be attributed to low C/N ratio and toxic effect of free ammonia to Nitrobacter sp.. Sludge rising problem in clarifier was observed as increase of influent TKN of over 600㎎/L. The significant difference in nitrogen removals between 2 stage-IAAS and DynaFlows was observed in starting period. Adaptation period for DynaFlows was only 2 days, whereas that of 2 stage-IAAS was 20 days. This means that DynaFlow was better process to treat nitrogen in fluctuating strength of pollutants. From the experimental results, both 2 stage-IAAS and DynaFlow processes are supposed to feasible processes to treat nutrients in high strength wastewater, such as, poultry and swine wastewater.
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간헐포기 형태의 활성슬러지 공정에서 질소 , 인 및 pH , ORP 의 거동에 관한 연구
서인석(In Seok Seo),김병군(Byong Goon Kim),박승국(Seung Kook Park) 한국물환경학회 2000 한국물환경학회지 Vol.16 No.1
In this research, 5 types of intermittently aerated activated sludge system were operated for nitrogen and phosphorus removal in wastewater. Also, pH and ORP (Oxidation-reduction potential) behaviour was evaluated as a control parameter for nitrogen removal. Nitrogen and phosphorus removal efficiency is strongly dependent on COD/TN ratio of influent The behaviour of nitrogen concentration and ORP values during a aeration-nonaeration cycle is described by a typical profile with 3 bending points. Also, pH raised at nonaeration state and decreased at aeration state. From analysis of ORP or pH slope ( ΔORP/ Δt or ΔpH/ Δt), ORP was more critical at endpoint of denitrification than pH. As a results, ORP pattern is more useful than pH as a control method in intermittently aerated activated sludge system.
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활성슬러지공정 최적화를 위한 호흡율측정에 기초한 제어 전략
허남효(Nam Hyo Heo),최광수(Kwang Soo Choi),김창원(Chang Won Kim),김병군(Byong Goon Kim),강호(Ho Kang) 한국물환경학회 1999 한국물환경학회지 Vol.15 No.2
Recently, various control strategies for the activated sludge process based on respirometry were introduced by the IAWQ Task Group on Respirometry in its Scientific and Technical Report (STR). Respirometry is the measurement of the oxygen consumption rate of activated sludge under well defined experimental conditions. Because oxygen consumption is directly associated with both growth and substrate removal, respirometry is a useful technique for controlling and operating of the activated sludge process. This paper is based on two different respiration rate, which can be measurement with the substrate-limiting and excess of substrate condition. The actual respiration rate of activated sludge is dependent on the substrate concentration and reflects the loading of the plant, and the maximum respiration rate is independent of the substrate concentration. Literature shows that measuring actual respiration rate and maximum respiration rate can be useful for loading control, toxicity dection, estimation of active biomass on the activated sludge. In this study, actual and maximum specific respiration rate were used as control parameter for stable sludge loading rate and detection of toxicity, respectively.
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