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무기막을 사용한 먹는물 처리 시 최적의 조건 도출 및 처리수질에 미치는 영향
원찬희 한국환경기술학회 2018 한국환경기술학회지 Vol.19 No.6
In this study, the treatment efficiency of inorganic membrane according to the flux that blending raw water was investigated at the laboratory level. Based on the results of each blending and flux, we obtained the best efficiency according to each measurement item. The treatment efficiencies were different depending on the raw water and treatment amount of the treated water. Especially, turbidity removal efficiency was high. In the case of UV254, the removal efficiency according to the concentration of the raw water and the removal efficiency according to the flux of the treated water showed a maximum of 69 % to minimum of 48 %. In the case of TOC and DOC, the processing efficiency was 22 % and 28 %, respectively, because the organic value of the raw water was low. These results suggest that there is an optimal process to effectively remove contaminants from the inorganic membrane process, and it is necessary to optimize it according to operating conditions. 본 연구는 정수처리장의 유기막의 처리수와 원수의 블렌딩된 혼합시료를 이용하여 무기막 처리 시 flux의 량에 따른 처리 효율을 실험실 수준에서 규명하였다. 각각의 설정된 블렌딩과 flux의 값에 따라 어떠한 성능을 내는지 고찰하고, 이를 바탕으로 각 측정항목에 따른 최고의 효율을 도출하였다. 처리원수의 수질과 처리량에 따라 서로 다른 처리효율을 보였으며, 특히 탁도제거에 큰 효율을 보였다. 또한 UV254의 경우 처리 원수와 flux에 따른 제거 효율이 최대 69 %에서 최소 48 %로 원수의 농도에 따라 다른 제거율을 보였으며, TOC와 DOC의 경우 원수의 값이 낮아 처리 효율이 최대 22 %와 28 %의 값을 나타내었다. 이상의 결과는 무기막 공정에서 오염물질이 효과적으로 제거되는 최적의 공정이 존재함을 시사하며, 대상 원수와 운전조건에 따른 최적화가 필요함을 보인다.
섬진강수계의 오염원 관리방안에 따른 수질 개선에 관한 연구
원찬희 한국환경기술학회 2018 한국환경기술학회지 Vol.19 No.6
This study formed a scenario to improve a water quality by expecting and analyzing a water quality of Jeollabuk-do Seomjingang water system, so calculated a result. As a result, it was analyzed that a water quality is improved at 15.32 % of the maximum BOD, 7.17 % of T-N, and 62.86 % of T-P according to domestic and livestock cut amount by reinforcing discharge water of sewage disposal plant and improving pollutant management plans. It was analyzed that supplementing various cut plans such as establishment of efficient cut plans, plans to decrease pollution loading amount, plans to increase sewage disposal efficiently, pollutant decrease through an expansion of sewage disposal area, and energy recovery from animal dung of Total Pollutant Load Management System, and developing a study on more efficient improvement plans of water quality by considering natural increase and economic development are efficient in an improvement in a water quality. 본 연구는 전라북도 섬진강수계의 수질을 예측 분석하여 수질을 개선하는 시나리오를 구성하여 결과를 산출하였다. 결과적으로 공공하수처리시설의 배출수 관리강화 및 오염물질 관리 개선과 국내 축산계 감소에 따라 수질이 최대 BOD 15.32 %, T-N 7.17 %, T-P 62.86 %로 개선된 것으로 분석되었다. 효율적인 감축 계획수립, 오염부하량 저감계획, 하수 처리 효율 증대 계획, 공공하수처리시설 확대로 인한 오염물질 감소 및 총 오염 부하 동물 배설물 에너지 회수 등 다양한 삭감계획을 보완한 것으로 분석되었다. 자연증가 및 경제발전을 고려한 수질 개선 계획에 대한 연구개발은 수질 개선에 효율적이다.
원찬희,김종신 全北大學校 附設 都市및環境硏究所 1998 都市 및 環境硏究 Vol.13 No.1
This study was carried out in order to estimate the domestic sewage quantities-qualities from combined sewer in Iksan and Hameol. To investigate the domestic sewage quantities-qualities from combined sewer, sample were collected 2 times during this study period at ten points. Flow rate analysis demonstrates a major morning and evening peak between 08:00∼10:00 and 19:00∼22:00, respectively. The concentrations of BOD were in the range of 23∼340㎎/ℓ and 28∼318㎎/ℓ, respectively. The highest concentrations of BOD occurred in the point 1. The concentrations of suspended solids were in the range of 18∼330㎎/ℓ and 13∼85㎎/ℓ, respectively. The pollution loading runoff after a rainy season decreased compared to that made before the rainy season. Comparisions with data for second survey show lower than first survey, from domestic sources, of many dilute water often regarded as having a mainly groundwater origin.
해성점토의 물리적 및 화학적 특성에 미치는 염분의 영향
元燦喜,李秉錫 全北大學校 1992 論文集 Vol.34 No.-
The purpose of this study is to investigate the effect of the salt on the physical and chemical properties of marine clay based on the experiments such as specific gravity, grain-size analysis, consistency limit and PH test. The main results of this study are summarized as fellows. 1) The specific gravity of soil containing salt was greater than saltless soil and the specific gravity of soil containing salt was found to be decreased with desalting soil. 2) Due to floculation by the effect of salt, the grain size of marine, soil was found bigger than original grain size and passing percent also was more then 100% 3) The values of liquid were decreased by 7 ∼ 16%, plastic limit 0 ∼ 10%, with the increase of salt content. 4) The PH value was increased by 9.7 as 1% Na_2CO_3 was added. But when Na_2CO_3 was added more than 1%, the increase of PH value was little, with the increase of Na_2CO_3 content. And quantity of NaCl did not appear to influence PH value of sample soil and soil containing Na_2CO_3.
元燦喜 全北大學校 附設 都市및環境硏究所 1990 都市 및 環境硏究 Vol.5 No.-
A two dimensional explicit finite difference circulation model with appropriate boundary condition is developed to solve the linear shallow water equations. The finite difference grid is a staggerd distribution of variables and computed vertically-integrated flow per unit width in a computational domain. The proposed circulation is applied to SANG KWAN reservoir. Computed results are as follows; 1) It is easy to understand mass conservation that parameter took discharge per unit width. 2) In numerical results, it is represented the flow pattern very well and demonstrative purpose. 3) It is considered wind effect in order to explain physical behavior in reservoir.
분류식 하수관거의 도시하수발생 및 하수수질에 관한 연구
원찬희,김종진 全北大學校 附設 都市및環境硏究所 1998 都市 및 環境硏究 Vol.13 No.1
This study was performed in order to estimate the domestic sewage quantities-qualities from separate sewer in Chonju. To investigate the domestic sewage quantities-qualities from separate sewer, sample were collected 2 times during this study period at thirteen points. Flow rate analysis demonstrates a major morning and evening peak between 07:00∼09:00 and 19:00∼22:00, respectively. The concentrations of BOD were in the range of 20∼150㎎/ℓ and 20∼112㎎/ℓ, respectively. The highest concentrations of BOD occurred in the point 5 at first survey. The concentrations of suspended solids were in the range of 18∼330㎎/ℓ and 13∼85㎎/ℓ, respectively. The pollution loading runoff after a rainy season decreased compared to that made before the rainy season. Comparisions with data for sewage plant influents show lower than expected inputs, from domestic sources, of many dilute water often regarded as having a mainly groundwater origin.