반응조 나열법을 이용한 하천 모델 개발

박석순,이용석,박민대 ( Seok Soon Park,Yong Seok Lee,Min Dae Park ) 한국하천호수학회 1991 생태와 환경 Vol.24 No.4

The Stochastic Time River Elevator Approach Mode (STREAM) which is a multiconstituent stream ecosystem model was exclusively developed in this study. The formulation of STREAM is based on the Cell-In-Series (CIS) approach where stream is assumed as a series of completly mixed flow reactors. This approach is to use a Lagrangian coordinate instead of an Eulerian such that it can overcome the limitations repoted in the previous stream models, such as QUAL2E. Major constituents included in STREAM are Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Suspended Solid (SS), Coliform Bacteria, Nitrogen Series, Phosphorus Series, and Phytoplankton. Dissolved oxygen change caused by Sediment Oxygen Demand (SOD) and respiration and photosynthesis of periphyton and macrophyte are included in the model structure. STREAM was programed in a BASIC language and graphic was attached. In order to validate STREAM model, both STREAM and QUAL2E (developed by United States Environmental Protection Agency) were applied to the South Branch of Han River under the same amibient condition. The result indicated that STREAM could simulate most water qualities with same accuarcy and less computer time than QUAL2E.

하천 불확실성 분석을 위한 몬테카를로 시뮬레이션과 일차함수 오차분석 비교

박석순,최은주 ( Seok Soon Park,Eun Ju Choi ) 한국물환경학회 1993 한국물환경학회지 Vol.9 No.3

Uncertainty analysis was performed for the Jisachun, a tributary of the Nakdong river, using QUAL2E-UNCAS model. Field data were obtained from two synoptic sampling surveys performed during February and March, 1991, and utilized for model calibration and verification. Monte Carlo simulation and First Order Error Analysis were conducted on the validated Jisachun model and the results were compared at five mainstream locations. The modeled water, quality parameters included Dissolved Oxygen, Biochemical Oxygen Demand, Nitrogen and Phosphorus series, and Total Suspended Solids, but selected parameters were displayed in this paper. Monte Carlo Simulation and First Order Error Analysis produced almost same values of standard deviation of the predicted water qualities in Jisachun. Monte Carlo simulation required much longer computer time than First Order Error Analysis but could produce frequency distributions of all predicted water qualities. The types and the relative significances of stream reactions which affected a specific water quality were determined from the First Order Error Analysis.

비모수 통계방법을 이용한 남·북한강 지천의 수질 비교

박석순,이상희,박배경,이상호 ( Seok Soon Park,Sang Hee Lee,Bae Kyung Park,Sang Ho Lee ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.3

The paper presents an application of nonparametric statistical method to comparison of stream water qualities between two different watersheds : the Seuth and North Branches of the Han River where significant differences have been reported regarding watershed characteristics as well as aquatic biota. Water quality data were obtained from three synoptic field surveys conducted from March to July 1992. The water quality parameters included 5-day biochemical oxygen demand, chemical oxygen demand, pH, suspended solids, anionic surfactants, and conductivity. The normality of tributary water qualities in both watersheds were examined using the boxplot which is a concise graphical summary of the data distribution. The plots showed that most data were typically non-normally distributed as expected. Therefore, nonparametric statistical method called Wilcoxen Rank-Sum Test was adopted in this study. The result indicated that discernable differences of water qualities existed between tributaries of two branches. Highly significant differences were computed in pH and conductivity during all attempted flow conditions. The other parameters, surh as BOD, COD, SS, and AS were much higher in tributaries of the South Branch than in these of the North Branches during low and mid flow periods. During high flow period, however, no statistical differences were computed between two groups of data. Nonparametric aspects of water quality data were also discussed in this paper.

해안 매립에 따른 항내 조류변화 예측

박석순,박재우,Park, Seok-Soon,Park, Jae-Woo 한국환경영향평가학회 1996 환경영향평가 Vol.5 No.1

This paper presents the results from a hydrodynamic model study to predict the impacts of coastal reclamation in Pusan harbor system using RMA2 which is a tidal flow model of the US Army Corps of Engineers' TABS-2 system. A finite element mesh was constructed and refined to cover the complicated geometry of Pusan harbor system and the proposed reclamation area. The model was calibrated to tidal elevations and currents measured during spring fall syzygys. Under the three different tidal conditions including summer winter syzygys, spring fall quarters, and summer winter quarters, the model predictions were compared with the field measurements both in tidal elevation and current. In all cases, there were excellent agreements between the model predictions and the field measurements. The validated model was then used to predict the changes in tidal current and elevation that might occur due to the coastal reclamation. It was predicted that there would be no change in tidal elevation of this system after the reclamation. In tidal current, however, discernible changes were predicted near the proposed reclamation area both in magnitude and direction.

한강유역의 토지이용도에 따른 지천 수질 비교

박석순,박배경,이상호 ( Seok Soon Park,Bae Kyung Park,Sang Ho Lee ) 한국물환경학회 1994 한국물환경학회지 Vol.10 No.1

Multiple linear regression analysis was performed to compare stream water qualities relating to land-use types in the Han River watershed. Explanatory variables were ratios of each land use area per total watershed and response variables were water qualities of receiving streams. The computed regression coefficients of each explanatory variables were used as the degrees of water quality impacts by land use types. The watershed was classified into four (4) different land use types : urban and industrial area, agricultural area, forest area, and green belt area (which has been preserved from development). Ninety four (94) tributaries were sampled three times during different flow conditions from March to July, 1992. Water quality parameters included in this study were Biochemical Oxygen Demand, Total Suspended Solids, Anionic Surfactant, and Conductivity. Regression coefficients were computed for each water quality and significance of coefficient values were estimated using the t- test. Linear relationship between explanatory variables and response variable was also measured by the F-test. From this study, it was concluded that there were significant linear relationships between receiving stream water qualities and land use types such that regression analysis could be used as a good comparison tool. The computed values of regression coefficients could be used as quantitative measurements of land use impacts.

미국 뉴저지주 매차포닉강의 수질 모델 연구 : QUAL2E 모델 적용

박석순,크리스토퍼 유클린 ( Seok Soon Park,Christopher G. Uchrin ) 한국하천호수학회 1990 생태와 환경 Vol.23 No.2

A comprehensive water quality model was constructed for the Matchaponix Brook, New Jersey, U.S.A., using the USEPA Enhanced Stream Quality Model (QUAL2E). The study area (15.3 km) was divided into eight (8) reaches. Each reach was then subdivided into uniform computational elements of 160.9 m. Field Data were obtained from two synoptic field sampling surveys performed during summer warm weather, low flow (September, 1989) and winter cold weather, low flow (November, 1989) conditions for three consecutive days. The model was calibrated to the September survey data and verified to the November survey data. The modeled water quality parameters included Dissolved Oxygen (DO), 5-day Biochemical Oxygen Demand (BOD_5), Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Organic Nitrogen (Org-N), Ammonia Nitrogen (NH₃-N), Nitrite Nitrogen (NO₂-N), Nitrate Nitrogen (NO₃-N), Total Organic Phosphorus (TOP), Total Dissolved Phosphorus (TDP), and Planktonic Algae as Chlorophyll-A (Chl-A) but selected parameters were displayed in this paper. The results displayed good agreement with the field measurements for both surveys in steady-state simulations.

SIREM1 모델을 이용한 수초에 의한 하천 수질 변화 분석

박석순,홍헌표 ( Seok Soon Park,Heon Pyo Hong ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.2

Water quality changes caused by macrophytes was quantitatively analyzed in this paper, using SIREM1 model. The model was calibrated and verified to water quality data collected from Tan stream where an excessive growth of macrophytes was observed in upstream area. The water quality parameters included in the model were dissolved oxygen(DO), carbonaceous biochemical oxygen demand(CBOD), and nutrients. Diurnal dissolved oxygen was simulated using QUAL2E model developed by USEPA as well as SIREM1 model. The results from SIREM1 model showed good agreement with field measurements. However, QUAL2E model could not represent the fluctuation of diurnal dissolved oxygen. Model sensitivity was analyzed with regard to several parameters which include temperature, reaeration coefficient, photoperiod, and light intensity. The role of macrophytes in the water quality changes was examined. The results indicated that macrophytes played an important role of controlling diurnal dissolved oxygen variations, nutrient uptake/recycle, and the generation of autochtonous organic matter. It was concluded from this study that SIREM1 model could effectively simulate diurnal dissolved oxygen and other conventional water qualities in macrophyte dominated stream.

Numerical Modeling of Redox Potential for the Postdepositional Fates of Toxic Trace Pollutants in Benthic Sediments

박석순(Seok Soon Park),Peter R . Jaffe 대한환경공학회 1995 대한환경공학회 학술발표논문집 Vol.1995 No.12

Development of a Bioaccumulation Model for Toxic Chemicals in Three Compartment Dynamic System

Seok Soon Park(박석순),Kyung Sik Choi(최경식),Karen M. Erstfeld 대한환경공학회 1997 대한환경공학회 학술발표논문집 Vol.1997 No.12

매립지 침출수가 수환경에 미치는 영향에 관한 연구 - 난지도 매립지 사례를 중심으로 -

박석순(Seok Soon Park),박재우(Jae Woo Park),정미훈(Mi Hoon Jeong),이지미(Ji Mi Lee),조경숙(Kyung Sook Cho),이승묵(Seung Mook Yi) 한국환경영향평가학회 1999 환경영향평가 Vol.8 No.2

Until 1993, Nanji landfill has been the main solid waste treatment facility for Seoul, which is the capital of Korea. Since the landfill has not been properly lined, soil and ground water around the landfill has been contaminated. Due to the proximity, it has been speculated that the water quality of the Han River would have been also influenced by the leachate. In order to illuminate this, HELP model to estimate the quantity of the leachate from Nanji landfill and RMA model to simulate the change of water quality in Han River were applied in this research. The result indicates that the quantity of leachate from Nanji landfill has been overestimated by previous works arid it was due to the failure to consider the water storage capacity of the landfill. The effect from Nanji landfill leachate on the water quality, in terms of COD input, proves to be smaller than those from other tributaries and influents to the River and the effect is larger when the flow of the River is reversed due to the tide.