측수로형(側水路型) 물넘이의 정수지(靜水池) 최적설계(最適設計)

박병흔 ( Park Byung Heun ),권순국 ( Kwun Soon Kuk ) 한국농공학회 1990 韓國農工學會誌 : 전원과 자원 Vol.32 No.2

An optimization model with the constraints of the hydraulic performance in a stilling basin has been developed for determining the optimal width and elevation of the stilling basin, thus minimizing the construction cost for the stilling basin of side channel spillways. The results from this study are summarized as follows. 1. The model developed in this study includes two distinguished procedures, i.e., to minimize the construction cost and to optimize the hydraulic performance in the stilling basins. The optimized solution for the hydraulic performance should be used in the process of minimzing the construction cost. 2. The pattern search method is used to minimize the cost, while the Fibonacci search method is utilized to optimize the hydraulic performance in the stilling basin. 3. From the result of computation for the variation of cost according to the change of values of decision variables using the optimization model, it was recognized that the one with higher elevation showed decreasing cost in the case of constant width. On the other hand, as the width of a stilling basin became wider, the cost decreased when the width was small and increased thereafter. Meanwhile, if the elevation of a stilling basin became higher, the width should be widen to satify the optimal condition of the hydraulic performance. Therefore, an optimal point from the model could be determined by using these contrary relationships. 4. The optimization model could be used for determining the optimal dimension for the hydraulic model of a stilling basin. It was suggested that the optimal design for the physical model could be obtained by using the optimization model.

인공식물섬을 이용한 저수지 수질개선

박병흔 ( Park Byung Heun ),권순국 ( Kwun Soon Kuk ),장정렬 ( Jang Jeong Ryul ) 한국농공학회 1999 한국농공학회 학술대회초록집 Vol.1999 No.-

Three floating islands have been constructed for water Quality improvement for a polluted irrigation reservoir. Phragmites australis was considered as the suitable aquatic macrophyte of the floating island. From April to August in 1999, the net primary productivity of Phragmites australis was 3,530gDM/m². Uptake rates of nitrogen and phosphorus by Phragmites australis planted in the floating island could be estimated to 10.2kg/d/ha and 0.8kg/d/ha, respectively. The floating islands worked well as a habitat of fish and prawns. Therefore, the floating islands could be evaluated a good measure of water Quality improvement for a irrigation reservoir.

인공식물섬의 호소 수질개선 효과분석

박병흔 ( Park Byung Heun ),권순국 ( Kwun Soon Kuk ),윤경섭 ( Yoon Kyung Sup ) 한국농공학회 2000 한국농공학회 학술대회초록집 Vol.2000 No.-

Three floating islands were constructed on the surface of the reservoir, each consisting of 10 16-㎡ (4×4 m) segments, made of wood frames and floats. Three species of aquatic macrophytes were planted in each island on June, 1998. Phragmites australis was considered as the suitable aquatic macrophyte for the floating islands since it maintained the most efficient root and shoot balance among the macrophytes. The net primary productivity of P. Australis was 3,604 g/㎡ based on dry weight in 1999, with uptake rates of nitrogen and phosphorus estimated at 77.4 g/㎡/yr and 5.7 g/㎡/yr, respectively. The result of water quality simulation for the floating islands showed that, through adsorption of nutrients and light screening, they could reduce the amount of phytoplankton, thereby decreasing COD concentration.

수리학적 고부하조건의 인공습지 수처리특성

박병흔(Byung Heun Park),남귀숙(Gui Sook Nam),이광식(Kwang Sik Lee) 한국물환경학회 2001 한국물환경학회지 Vol.17 No.4

The objectives of this study were to analyze the efficiencies of constructed wetlands under high hydraulic loadings. Constructed wetlands used for this study were composed of 5 planted wetlands in series. The system was operated with the condition of low concentrations and high hydraulic loadings. Average removal efficiencies(%) of pollutants in the wetlands were 49.2(BOD), 16.5(COD), 23.9 (T-N), 27.4 (T-P) and 51.5(Chl-a). And, average removal rates(g/㎡/d) were 3.71(BOD), 2.22(COD), 0.56 (T-N), 0.07 (T-P). Comparing this system with other wetlands operated at low hydraulic loadings and high level of water quality, the former could remove greater amount of pollutants by unit area than the latter, and vice versa in the case of removal efficiencies due to different hydraulic loadings. Pollutant removal rates were considered to be increased as influent loads got higher from the regression analysis for influent pollutant loads and removal rates. From these results, constructed wetlands are considered to have potential for removing pollutants even though hydraulic loadings were high. Therefore, constructed wetlands are thought to be a practical alternative to improve polluted stream water quality and non-point source pollution management.

농업용 저수지의 수질개선방안에 관한 연구

박병흔 ( Park Byung Heun ),장정렬 ( Jang Jung Ryul ),권순국 ( Kwun Soon Kuk ) 한국농공학회 1998 한국농공학회 학술대회초록집 Vol.1998 No.-

The measures for water quality improvement have been planned to introduce for several reservoirs which were badly polluted among the sites included in the Network of Agricultural Water Quality Survey (NAWQS). Considering conditions of circumstances around reservoirs, self-purification systems such as natural ecosystem, oxidation ponds with plants, grassed waterways, weirs, and manmade plant-islands are taking into account enhancing to trap nutrients in waters running off from agricultural lands. The Pollutant Run off Ratios were analysed to predict the effects of water quality improvement for self-purification systems. The cost of water quality improvement was evaluated. The correlation equation between cost and irrigation area showing high correlation coefficient was derived.

호소수질정화공법의 평가를 위한 수질모형의 개발 및 적용

박병흔 ( Park Byung Heun ),권순국 ( Kwun Soon Kuk ),장정렬 ( Jang Jeong Ryul ) 한국농공학회 2001 韓國農工學會誌 : 전원과 자원 Vol.43 No.6

Excessive outflow of pollutant loads resulting from rapid industrialization has unbalanced the water ecosystem, deteriorating the water quality environment severely. Therefore, measures for improving the water quality are necessary to maintain clean reservoir water and restore water-friendly spaces. A water quality model which is capable of simulating daily reservoir water quality was developed. The model had been applied to Masan reservoir and Wanggung reservoir in Korea. The model appeared to be satisfactory in representing the trend of water quality variations by comparing measured and simulated results. The model had been also applied to assess water purification techniques such as dredged pool, floating island and vegetation purification system. The model was considered to assess the effect of water purification techniques on reservoir water quality improvement. The results of water quality simulation for lake water purification techniques showed that a large facility would be needed to meet the targeted water quality of the reservoir when only one technique is applied. To effectively improve the quality of the polluted reservoir water, it is therefore recommended that pollutant sources should first be controlled, and a combination of the water purification techniques applied to make the utmost use of their secondary effects such as conservation of the reservoir volume capacity, establishment of a recreation space, promotion of bio-diversity, and improvement of the lake landscape.

저수지 수질개선을 위한 식생정화시스템

박병흔 ( Park Byung Heun ),장정렬 ( Jang Jeong Ryul ),이광식 ( Lee Kwang Sik ),윤경섭 ( Yoon Kyung Sup ),권순국 ( Kwun Soon Kuk ) 한국농공학회 2000 韓國農工學會誌 : 전원과 자원 Vol.42 No.4

A vegetation purification system was applied to improve water quality of Masan Reservoir in Korea, which was composed of constructed wetlands in series. Five different kinds of macrophytes were planted in each wetland. The system was operated with the condition of low concentrations and high hydraulic loadings. Removal efficiencies(%) of chemical oxygen demand(COD), total nitrogen(T-N) and total phosphorus(T-P) in this system were 9.0, 12.8, 20.1%, respectively. and removal rates(g/m²/d) were 1.9(COD), 0.34(T-N) and 0.05(T-P). Comparing this system with other wetlands operated at low hydraulic loadings, average removal efficiencies were low but removal rates were relatively high. Accordingly, this system could be applied to improve reservoir water quality, because removal rates are more important than removal efficiencies in case of reservoir water quality improvement. However, the removal efficiencies and rates of this system are less than those of the hydroponic biofilter method which is a kind of a constructed wetland and utilize root zones of emergent macrophytes for trapping pollutants. Therefore, it is recommended that this system should be modified to utilize root zones of emergent macrophytes enough to improve reservoir water quality more efficiently.

저수지내 침전지가 수질개선에 미치는 영향

장정렬 ( Jang Jeong Ryul ),박병흔 ( Park Byung Heun ),권순국 ( Kwun Soon Kuk ) 한국농공학회 1999 한국농공학회 학술대회초록집 Vol.1999 No.-

This study was conducted for the purpose of assessing the pollutant removal possibilities of sedimentation pool formed by deep dredging of a reservoir inlet. Water quality data were collected in the Masan reservoir, whose inlet has been dredged deep like sedimentation pool. The average concentration of chemical oxygen demand(COD), toatal nitrogen(T-N) and total phosphorous(T-P) in the deep dredged area were 8.3~28.4mg/ ℓ (COD), 2.0~6.0mg/ ℓ (T-N), 0.17~1.34mg/ ℓ (T-P), which were 3.3% (COD), 30.6%(T-N) and 46.4%(T-P) higher than those of middle part of the reservoir. From these results, it was considered the deep dredged area in the inlet of reservoir might play a key role to improve reservoir water quality.

간척농지에서의 오염물질 유출특성

최인욱 ( Choi In Uk ),박병흔 ( Park Byung Heun ),권순국 ( Kwun Soon Kuk ) 한국농공학회 2000 한국농공학회 학술대회초록집 Vol.2000 No.-

In order to control the water quality of freshwater lake in tidal reclaimed land, it is needed to evaluate accurate amount of pollutant loadings from reclaimed paddy field. This study was carried out to investigate the pollutant loading from a reclaimed paddy field. Site of the study was a paddy field located in Taeho reclaimed land, with an areas of 38.5 hectares. The runoff loadings of Total-Nitrogen, Total-Phosphorus, and Chemical Oxygen Demand were 49.5 kg/㏊/yr, 3.2 kg/㏊/yr and 154.0 kg/㏊/yr, respectively. The runoff loadings in Total-Nitrogen and Total-Phosphorus from this study were much higher values than the pollutant load factor of Total-Nitrogen and Total-Phosphorus from the paddy field published by the Ministry of Environment.

농촌지역의 유량ㆍ부하량관계식 산정

송인홍 ( Song In Hong ),박병흔 ( Park Byung Heun ),권순국 ( Kwun Sun Kuk ) 한국농공학회 1999 한국농공학회 학술대회초록집 Vol.1999 No.-

This study was initiated to collect background pollutant data for rural watersheds. The effluent/run-off pollutant load and run-off ratio of the study areas were calculated and the two types of regression equations, L=aㆍQ+b and L=c ㆍQ^d where L and Q are the pollutant load(L) and discharge(Q), were derived. We acquired that the correlation coefficients of (he two types of regression equations were over than 90% except for BOD. Therefore, L-Q equations would be a measure to predict water quality of rural watersheds.