http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Life Cycle Assessment(LCA)을 도입한 오니처리시스템의 평가
황용우,권봉기,유성호 대한상하수도학회 1997 상하수도학회지 Vol.11 No.2
Life cycle assessment (LCA) on total sewage sludge treatment system from thickening to incineration and melting was performed for estimating global environmental impact as CO_2. In general, the life cycles of actual treatment facilities consist of construction, operation and dismantlement. In this study, the amount of CO_2 produced from both whole and each life cycle step of currently used unit sludge treatment processes were calculated by inventory analysis. In addition, in the all processes investigated in this study, individual CO_2 production unit (CPU), i.e. total produced CO_2 by treating a unit weight of sludge was also calculated. By using the CPU matrix of the unit processes, it was possible to simulate the CO_2 production for any type of complex-system as well as to trace a dominant cause of CO_2 production in each process. Four selected alternatives examined here, each involve the same disposal way but differ substantially in the CO_2 exhaust.
활성탄 흡착에 의한 취기유발물질(臭氣誘發物質)제거에 관한 연구 : GEOSMIN , 2-MIB 를 중심으로
박중현,권봉기,김한승 대한상하수도학회 1994 상하수도학회지 Vol.8 No.2
The occurrence of objectionable tastes and odors in drinking water is a common and widespread program. The most troublesome odors are usually those described as muddy or earthy-musty. Two organic compounds which have been implicated as the cause of earthy-musty odor problems in water are geosmin and 2-Methylisoborncol. These earthy-musty organics have been shown to be metabolites of actinomycetes and blue green algae. The purpose of this paper is to describe adsorbability in removing these two odor causing compounds(geosmin and 2-MIB) upon various condition like pH variation, adding humic acid and different activated carbon. The conclusion of this study are as followings. In batch test, carbon dosage is 10㎎/100㎖ for geosmin and 15㎎/100㎖ for 2-MIB. Both were in equilibrium stage after 60 hours. In model simulation, F-P model described experiment data and modelling data appropriately in geosmin but F-S model not. In case of 2-MIB, models didn’t describe relation between experiment and modeling data well. Two causative agents of earthy-musty odor compounds, geosmin and 2-MIB, are strongly adsorbed by activated carbon either coconut or brown. There appears to be no effect of pH(5, 7, 9) on adsorption of these two organics. Activated carbon proved to be more effective for removing geosmin than for removing 2-MIB. When activated carbon is used in removing these two organics, the removal of these appeared to be adversely affected by back ground organic compounds, such at humic substances, due to competitive adsorption.
박중현,김봉근,권봉기 대한상하수도학회 1996 상하수도학회지 Vol.10 No.3
The present problems concerning the control of generation, storage, collection, transfer and transport, processing and disposal of the municipal waste are serious. And the transportation of the municipal waste is recently a important part of solid waste treatment and disposal. The waste pneumatic transportation system is expected to be an effective method for use in solving that problems. In this study, pneumatic transportation system was applied to 2,000-5,000 house-holds of public/group housing for economic and technical analysis on the basis of data for working and operation. The proper equipment must be selected through economic and technical analysis for generation and properties of waste because the equipment in facilities of system is various. And the efficient operation method should be studied on the basis of information on the record of oeration. As the wet food waste clogs the pipeline, it is necessary to examine under the actual condition. The maximum unit waste generation rate based on the assumption that each household is comprised of 3.20 people is determined 2,340g/householdㆍday, and it is included the 50% increase of seasonal and daily change.
유태종,김성순,권봉기 대한상하수도학회 1989 상하수도학회지 Vol.3 No.1
The purpose of this study is to research the effect of anoxic retention time on nitrogen and phosphorus removal by Anaerobic-Anoxic-Oxic process. The anoxic retention times were 0.50hr, 0.75hr, 1.00hr, and 1.25hr, respectively. And the retention times of Anaerobic and Oxic basin were 1.5hr and 1.13hr. The substrate used in experiments was synthetic wastewater. COD concentration was 400㎎/ℓ and influent flow rate of substrate was 24.0ℓ/day. The following conclusions were obtained from the results of this study. 1. The rate of phosphorus removal was high when influent phosphorus concentration was 10㎎/ℓ, but the rate was declined when influent phosphorus was more than 15㎎/ℓ, But, when it was considered as the amount of phosphorus removal per hour(㎎/hr), the removal amount increased as influent phosphorus concentration increased. 2. As anoxic retention time increased, phosphorus removal increased a little, but anoxic retention time couldn't have a great effect on phosphorus removal. 3. The amount of phosphorus removal per MLVSS was almost constant when anoxic retention time was more than 0.75hr at influent phosphorus concentration 5, 15, 20㎎/ℓ, when anoxic retention time was more than 1.00hr at influent phosphorus concentration 10㎎/ℓ. Therefore it is suitable that anoxic retention time is 0.75∼1.00hr in process. 4. The amount of nitrogen removal per MLVSS in anoxic basin and the system increased as Anoxic retention time and influent nitrogen increased. 5. The amount of nitrogen removal per MLVSS in basin was almost constant when anoxic retention time was the same at influent nitrogen concentration 20 and 30㎎/ℓ. And the amount of nitrogen removal per MLVSS was almost constant when anoxic retention time was more than 0.75hr at each influent nitrogen concentration.
오존 및 오존/UV 산화법을 이용한 휴믹산의 분해와 THM 발생능의 감소
박태진,박주석,권봉기 대한상하수도학회 1996 상하수도학회지 Vol.10 No.4
This research was based on comparing ozonation with combined ozone/ultraviolet oxidation through the methods of reducing THM produced during water treatment. The results were as follows; 1. The decline of THM concentration was appeared according as ozone dosage increases with ozonation and combined ozone/ultraviolet oxidation. The more effective method was the treatment of irradiating UV then ozonation. In the beginning of reaction the decline rate of THM formation potential was low, I thought it was because that the reaction of ozone and humic acid needed times to be steady state, or that THM formation potential existed according to humic acid. 2. The effect of combined ozone/ultraviolet oxidation when ozone dosage was 4.2㎎/L min was almost the same that of ozonation when ozone dosage was 8.6㎎/L min. 3. In experiment of TOC decline through ozonation and combined ozone/ultraviolet oxidation, TOC concentration was also dropped according to increasing ozone dosage and the more effective results were showed in treatment of irradiating UV than ozonation. But the similar TOC remove rates were showed in experiment of changing with ozone dosage during combined ozone/ultraviolet oxidation TOC remove rates were low in proportion to the remove rates of THM formation potential, it was considered that humic acid was made low molecule itself though ozonation and ozone/ultraviolet oxidation Moreover, the high degree of remove efficiency will be get though the treatment of activated carbon of GAC treatment after combined ozone/ultravilet oxidation.