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원찬희,김종신 全北大學校 附設 都市및環境硏究所 2000 都市 및 環境硏究 Vol.15 No.1
Saemankeum Construction Plan, constructing a 33km tide embankment, is a project that builds 28,300ha land and 11,800ha artificial lake. Since there is a high potential that eutrophication could appear at Saemankeum Lake, its construction has attracted a lot of attentions from academic circles as well as the government. Thus, this study is to estimate the primary productivity in Saemankeum area. To investigate the primary productivity, sample were collected 7 times from May to November in 1998 at seven points. The results were as follows ; The concentrations of Chlorophyll-a in this study area were in the range of 5.3∼46.2㎎/㎥. Mean primary productivity in Saemankeum area was estimated to be 161.6∼990.2㎎C/㎡/d which is wuite similar value to the recent results from the Korea. The highest production rate was found at October in 1998. Therefore, trophic level of the study area was ranged as mesotrophic level by Linkens' Method.
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.
도시쓰레기 처리·처분을 위한 발생원별 쓰레기 배출특성에 관한 연구 : 전주시를 중심으로
원찬희,김종신,김민정 全北大學校 附設 都市및環境硏究所 1997 都市 및 環境硏究 Vol.12 No.1
This paper was on the physico-chemical properties of municipal solid wastes generated from Chonju. Each waste sample was analyzed to obtain physical composition, proximate analysis, chemical composition and heavy metal composition, proximate analysis, chemical composition and heavy metal composition. These characteristics were compared with those of residential and commercial area in Chonju. The densities of solids wastes were largely different for each sampling site and the average densities of wastes from high rise apartment building area and commercial area were 0.247ton/㎥ and 0.177ton/㎥, respectively. The average physical composition of wastes from residential area were food waste 54.4∼57.9%, paper 16.9∼17.9%, vinyl plastics 13.1∼9.3%, while that of commercial area was food waste 49.7%, paper 33%, vinyl plastics 7.0%. The average moisture contents of waste from row-rise detected dwellings and high rise apartment building and commercial area were 32.2%, 35%, 35.6% and the volatile solids were 52.8%, 45%, 44.9%, respectively. The average chemical composition of wastes from residential area were carbon 50.1%, hydrogen 6.2%, while that of commercial area was carbon 51%, hydrogen 6.5%.
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.
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.