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問歇的 水質變化와 連續的 活性 슬럿지 方法에 關한 實驗的 硏究
孫仁植 釜山工業大學校 1983 論文集 Vol.24 No.2
I grasp the quality of water urban sewage and abserve treatment process use of trickling process and actived sludge process, concentrated upon the microbial activityr the quality of receiving water, treatment state in areation tank, especially season change, sewage concentnation plan and management Under the research hesult. I know that the efficiency of treatment Change in accordance with the changs of Season.
剩餘슬러지를 利用한 硫黃系 惡臭除去에 關한 基礎的 實驗 硏究
金晋吉,孫仁植 釜山工業大學校 1988 論文集 Vol.30 No.-
An experimental investigation was carried out to evaluate the feasibility of the biological deodorization by the wasted activatid sludge from a biologica al wastewater treatment process by using hydrogen sulfide and methyl mercaptan as malodorous gas. the results from this study could be summarized as follows: 1. Removal effciencies of the malodorous hydrogen sulfide and methyl mercaptan by activated sludge were both 99% or more, which were better performance in comparison with the commonly used physicochemical deodorization method. 2. It was found that this deodorization technique was feasble in respect with simple installation, operation and reuse of the wasted activated sludge. 3. addition of glucose as organic nutrient to a stably performing deodorization unit caused a decrease in the rmoval efficiency, thus indicating that the application of malodorous gas to aeration tanks of activated sludge process for deodorization seemed to be not feasible. 4. Maximum MLSS concentration in deoderization units was estimated to be about 10,000mg/1 in consideration with oxygen supply and mixing effect. Hence the wasted activated sludge form biological wastewater treatment plants can be directly used for this purpose without dilution or thickening of the wasted sludge. 5. Decay coefficients in hydorgen sulfide and methyl mercaptan deodorization units were found to be 0.026 day-1 and 0.033 day-1, respectively.
지방정부 관광정책결정과정의 통합적 시스템 구축에 관한 연구 : 경주시를 대상으로
손인식,조현호 경주대학교 관광진흥연구원 2000 관광학논총 Vol.4 No.-
The sudden change in the circumstances surrounding tourism policies requires a concentration from policy-making to policy-execution. Regional characteristics, along with the effectiveness of strategic tourism policies with in a framework of regional tourism administration, are becoming more conspicuous. The tourism policy decision process in local governments aiming towards a common regional tourism goal must avoid the waste of time restructure the tourism organization system through integration or rearrangement. Kyongju City must always apply in a flexible manner most of the regional characteristics and understand clearly the state of the tourism system. From this starting point, the city must construct a systematic framework for multilateral cooperation founded on mutual relations and constant readjustment with each other.