畜産廢水處理시스템의 最適說計要因 導出

오인환,박정현,김범석,이상락,맹원재,Oh, In-Hwan,Park, Joeng-Hyun,Kim, Beom-Seok,Lee, Sang-Rak,Maeng, Won-Jae 한국축산환경학회 1995 축산시설환경학회지 Vol.1 No.1

An efficient Treatment of animal wastewater is one of the hot issues for preventing the environmental pollution. It should be established the design parameter in order to purify the animal wastewater. A test is carried on in the pilot plant as a simplified activated sludge process. A vibration sieve separator is deviced to keep the pollution load constant by means of separation of solid matter. The BOD removal efficiency of the vibration sieve showed over 50%. As the test results, the BOD contents of the influent was in average of 3,000 mg/I and that of the effluent 85 mg/I. So, the BOD removal rate showed 97% in average. The SS-contents in the primary chamber was about 3,300 mg/I and that of effluent 92 mg/I. The SS removal efficiency showed 97%. The removal rate of total nitrogen and phosphore were in average of 82% respectively. Carrying out in winter season, it showed relatively good results; The design parameter approved in this test can be applied to the full-time farmers.

수변공간의 토지이용 개선방안 : 진주시 남강변 제방개선과 주변공간 활용방안을 중심으로

김영,오인환 慶尙大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.14 No.-

The urban river functions as waterfront and flood control, providing recreation spaces along riverside. It is vital that people need such a multi-purpose use for urban life. Especially the riverside provide people with open spaces for recreation so that people can enjoy urban life. Given that a band of riverside remains unused or misused only providing roads and car parks & covered with concrete, it might be considered to be improved for urban life or landscape. We consider rearrangement of an array of banks from Chinju Bridge to Dongbang Hotel along the Namgang so that it can be used for recreation and improved for landscape through immediate waterfront development. Here, reducing the height of the bank, we extend the use of open space not only for road, walkway, and jogging course but also for recreation and tourism. At same time, we suggest not only some alternatives of traffic circulation improvement for creating such recreation space but also landscape improvement for sustainable development: promenades, shelters, water stairs, lawn/turf, guardrail for walking environment improvement and block construction of embankment, vegetation with wetland inventory for natural and visual landscape in the survey area. This study, however, has some constraints to extend to the other places which requires additional improvement in a city as a whole. Nonetheless, it encourages to escalate the level of urban life and, through such physical improvement of riverside, it will be an indicative reference to reshape of riverside or waterfront in a city.

醫療界 Issue들에 대한 醫大 本科 3年生들의 態度 : 환자권리선언 및 의약분업

吳仁煥,李根泰,Won, George 연세대학교 행정대학원 1986 延世行政論叢 Vol.12 No.-

漁村 村落構造에 關한 硏究(Ⅰ) : 泗川灣의 海岸地域을 中心으로 An Analysis of the Coastal Zone of Sachun Bay

李相正,吳仁煥 慶尙大學校 1982 論文集 Vol.21 No.1

This paper analyzes the characteristics of fishing villages and many factors which influence the structure of fishing villages in the coastal zone of Sachun Bay. The ditails of the study are analysis and research on the regional characteristics of structural factors, structural characteristics, space and types of the fishing villages. As the result of this study, we can obtain the design data and the rational method of architectural planning and community development in the coastal zone.

g/4!ø4이론에 대한 발산순화와 제 규격화 군 방법

오인환 창원대학교 1985 논문집 Vol.7 No.

온도의 표준화에 관한 소고

오인환 창원대학교 1986 논문집 Vol.8 No.

원통 사일로에서 穀物의 貯藏容量 算出

吳仁煥 建國大學校 附設 自然科學硏究所 1992 建國自然科學硏究誌 Vol.3 No.-

氣密 원통사일로에 사료곡물을 저장하는 방법은 고정비의 負擔이 크다. 따라서 저장용량에 대한 정확한 情報는 농장계획을 樹立하는 데 대단히 중요하다. 모델사일로는 제작하여 境界條件을 고려하면서 재료의 저장밀도와 수직압력 사이의 관계를 조사하였다. 평균수직압력은 얇은 cm의 壓力平衡狀態로부터 유도되었으며 수학식으로 나타내었다. 그런 수 사일로의 저장용량을 반복법으로 算出하였다. 모델사이로 벽면과 보리 사이에서 측정된 μλ값은 0.15∼0.30 범위였으며, 수분함량 25.7%의 보리를 저장깊이 12m에 저장할 때 추정된 수직압력은 약 45kPa이었다. 주어진 저장밀도와 수직압력 10∼65kPa 범위에서 저장밀도는 알곡 보리의 경우에 0.7∼0.8t/㎥, 粉碎 옥수수의 경우에는 1.05∼1.15t/㎥사이였다. 재료의 압축성은 수분함량과 관계가 깊다. 수분함량이 증가할수록 압축성이 증가하며, 총저장용량을 고려할 때 분쇄 곡물의 수분함량 40∼50%에서 최대의 저장밀도를 나타내었다. 그러나 乾物貯藏量으로 換算하면 액상저장방법보다 습상저장방법에서 곡물을 많이 저장하게 된다. Ensiling cereals in tower silo is loaded with high fixed costs for storage. Therefore, exact information and effcient use storage capacity is required for a good farm management. Using data from a model silo, storage density for cereals with different moisture content has measured by an iterative calculation method. The μλ value between the wall of model silo and barley grain was 0.15∼0.30. The vertical pressure of storaging barley with 25.7% moisture content in 12m deep silo was calculated to be 45 kPa. In a given moisture content and vertical pressure of 10∼65 kPa, the storage density of barley and Corn-Cob-Mix wer 0.7∼0.8 t/㎥ respectively. The compressability of material was related with the moisture contern. As the moisture content is increased, the compressability of material is also increased to a water-saturated point. By cracked grain with 40∼50 % moisture contents, the storage density and capacity showed its maximum level. However, when it is calculated in terms of dry matte, the moisture storage can accomodate more quantity of materials than the liquid storage.

3단정화조(저장액비화방법)의 정화효율 개선방안

오인환 건국대학교 자연과학연구소 1997 建國自然科學硏究誌 Vol.8 No.-

To fulfill the strengthened regulation, the widely spreaded 3-step septic tank should be improved. The treatment method has been also changed from anaerobic process to aerobic one. The detailed improvements are following; an applying the vibration separator to separate the solid matter from the waste water and the first two tanks installed with aeration device. The 3rd tank is devided into 3 tanks such as a settling tank, a discharge tank and a sludge storage tank. The design condition of the process and each capacity are also suggested for this farm. The BOD-concentration was 4,000mg/l in influent, 1,550mg/l after settling tank and 850mg/l in effluent on an average. The BOD removal rate was 79%. The most recent value of BOD, 395mg/l in effluent is sufficient to the regulation for the notification farm size, but not for the permit farm size.

畜舍尿汚水의 物理的 固液分離技術 開發

오인환,박정현,장동일 한국축산환경학회 1996 축산시설환경학회지 Vol.2 No.1

Solid/Liquid(S/L) separation is crucial for biological treatment of animal wastewater. Liquid portion from S/L separation has less BOD-load and proper post-strip treatment can be obtained. Screen or declined sieve was normally used to separate the solid parts. For better separating efficiency a vibration and a cylindrical separator were constructed and tested. The results are summarized as follows; Solids removal efficiency and moisture content of separated solid were 15~26% and 85~88%, respectively for the vibration separator. for the cylindrical separator, solid removal efficiency and moisture content of solid were 16~39% and 86~89%, respectively. The greatest amount of drymatter was obtained when operating vibration separator with 10$^{\circ}$ inclination and 100% vibrating power. For the cylindrical separator maximum efficiency was obtained with 40 rpm and 19$^{\circ}$ inclination. The vibration and the cylindrical separator have shown 21% and 26% in BOD removal, respectively. These two types of separator were proved to be applicable methods for animal wastewater separation. 축사뇨오수의 전처리단계로 고액 분리기를 제작하여 분리효율에 관한 시험을 수행한 결과는 다음과 같다. 진동체 고액분리기는 최저 15%에서 최고 26%까지 분리율을 나타내었으며, 분리고형물의 수분함량은 85~88% 사이였다. 회전원통형 고액분리기도 최저 16%에서 최고 39%까지 분리율을 나타내었으며, 고형물의 수분함량은 86~89% 사이였다. 최대의 분리고형물량은 진동체 고액분리기의 경우에 체의 경사도 $10^{\circ}$와 진동모터 가진력 100%, 회전원통형 고액분리기에서는 회전속도 40rpm과 경사각 19$^{\circ}$에서 얻을 수 있었다. BOD 제거율은 회전원통형 고액분리기가 26%로 진동체 고액분리기의 21% 보다 다소 높았다. 관리측면에서는 회전원통형 고액분리기는 주기적으로 세척을 하여 주어야 한다.

調査硏究에서 橫斷的設計와 縱斷的設計가 미치는 影響의 比較 : 醫大生 硏究資料(1983∼86)를 중심으로

吳仁煥 연세대학교 행정대학원 1991 延世行政論叢 Vol.16 No.-