골프장 그린 토양에서 Metalaxyl의 흡·탈착 특성

유병로,정경희 한국환경과학회 2002 한국환경과학회지 Vol.11 No.3

Laboratory experiments were conducted to examine the behavior of metalaxyl in environment, which was used as pesticide in green soil of golf course and as functions of the characteristics of adsorption, desorption and degradation in soil texture and organic matter contents. Acid water containing metalaxyl was conducted to evaluate the effects on adsorption, desorption and degradation. The adsorption of metalaxyl played more significant role in organic contents than clay contents, and pH increases more pH 2.5 than pH 5.6. The desorption of metalaxyl from contaminants soil decreased higher organic contents LS-soil than S-soil, but the desorption amount of metalaxyl increased more pH 5.6 than pH 2.5. The rate of degradation of metalaxyl in green soil environmental increased higher organic contents LS-soil than S-soil and decreased more pH 2.5 than pH 5.6. These results indicated that the behavior of metalaxyl of the green soil was affected the soil texture of the golf courses. Increasing of organic contents, the adsorption amount of metalaxyl on soil increased. Moreover, the decrease of the pH of solution increased adsorption amounts and decreased desorption amounts. As the results, the transportation of metalaxyl in soil decreased the acidic rates. The acidification of soil by the acid rain increased the adsorption amount of metalaxyl, but the degradation of metalaxyl decreased. Therefore, it is possible to sustain contamination in run-off the stream and ground water by residuals in soil.

환경갈등 완화를 위한 환경영향평가제도 역할 연구 -정보비대칭을 중심으로-

유병로,조현구 한국행정학회 2013 한국행정학회 학술발표논문집 Vol.2013 No.-

하천 복원을 위한 대전 3대 하천의 현황 조사

유병로,Yu, Byeong-Ro 한국하천협회 2007 하천과 문화 Vol.3 No.4

기획특집 - 대전, 저탄소 녹색성장의 모델도시를 지향하며..

유병로,Yu, Byeong-Ro 대전발전연구원 2011 대전발전포럼 Vol.36 No.-

모멘트 적용학습율 모형을 이용한 수질예측

유병로,전계원 한밭대학교 2003 한밭대학교 논문집 Vol.20 No.-

Purpose of this study constructs middle, long-term water quality forecasting model through development of stream water quality forecasting model by using time-series and neural network method. It was utilized by one basis module at development of a base technology for integrated real-time water management. The Okcheon, Jewon, Yongpo, Gongju, Buyeo, Yungi, Gabcheon and Mihocheon stations in Keum river basin were chosen to the places to examine this study. And basic parameters of model for a water quality module were made while examining these stations. Water quality forecasting models used in this study were the neural network model and the state space model. In neural network model, input data was made by statistical analysis and then optimum prediction model for each factor of water quality was chosen according to changes of the hidden layer structure. The state space model figured out optimization difference of process model and composed forecasting model. After that it forecasted water quality. To compare their forecasting capacity, the densities of water quality in 2001 were predicted and the results were compared and analyzed. And consequently neural network model was decided as a basic model for water quality forecasting module.

CRM 아스팔트의 친환경적 특성

유병로,박성의,한양수 大田産業大學校 2000 한밭대학교 논문집 Vol.17 No.1

Improvement of environmental friendly characteristics on asphalt pavement is one of the important processes to make good quality asphalt. The asphalt mixture with CRM (Crumb Rubber Modifier) is known to show a better performance in penetration, noise reduction, physical characteristics including resisting thermal cracking, fatigue cracking and rutting compared with the conventional mixture. In this study, the test on the environmental friendly characteristics, physical and mechanical characteristics of the domestic crumb rubber modified asphalt and conventional asphalt(AP-5) were conducted. The test results show that CRM asphalt has better physical and mechanical characteristics including indirect tensile strength and stiffness modules than that of conventional asphalt. The results from the test of environmental characteristics can be summarized by the followings. The optimum asphalt content of CRM mixture by Marshall test showed the range from 5% to 5.8%. The penetration ability of CRM asphalt has about a hundred times higher than conventional asphalt. CRM asphalt was considered to improve the environmental characteristics on asphalt pavement.

신경망 모형을 이용한 하천의 BOD 예측

유병로,한양수,연인성 大田産業大學校 2000 한밭대학교 논문집 Vol.17 No.1

The purpose of this study is to develop the stochastic stream water quality model for the intaking station of Kongju waterworks in Kum river system. The performance of the multiplicative ARIMA model and the neural network model were examined through comparisons between the historical and generated monthly BOD series. This study is to optimal forecast the short term and long term water quality. This study is included the analysis of emission load for pollutants and flows which are critical impacts of water qualiry in streams. In this study the detailed methodology for forecasting was proposed using the neural network model. The validation shows the neural network model were closer to the field data than those data predicted by multiplicative ARIMA model.

GIS 기반 수질오염 부하량 산정에 관한 연구

유병로 한밭대학교 2003 한밭대학교 논문집 Vol.20 No.-

This research carried out to construct the database system on the water pollution loads in Bokha river basin using geographic information system. Major parameters used in this system are population, domestic animals, land use and industrial facilities. Bokha river basin is tributary of South Han River. This basin includes Ichon, Yongin, YeoJu, Kwangju city in Kyonggi-do. It occupies about 0.9% of whole Han River as basin area which is about 308.5㎠, and 38.5㎞ of the river. Basin has a shape of a leaf and the ratio(width/length)of the basin is 0.88. This basin is divided to Bokha main rivers basin and Sinduncheon basin. Study area were divide into 34 subbasins to control pollution source management. Major parameters adapted to present water pollutant distribution are BOD, TN, TP in each subbasins. Basin was divided 34 subbasins by DEM(digital elevation map) which is data based on the river system networks of tributaries. The most values of BOD load on unit area occurred at the urban area, but those of TS and TP load occurred at the livestock area. However, the least values of the all pollutant parameters occurred at the woodland. The results of this study showed that an application of GIS was very effective for the best water pollutants and quality management practice throughout the river basin.

소옥천 호소 저서퇴적물의 인 용출률 산정

유병로 한국수자원학회 2015 한국수자원학회논문집 Vol.48 No.1

This study examined pollution level of sediment in Sookchun lake, and studied dredging validity by examining phosphorous release characteristics on surface polluted soil. Total phosphorous, the principal cause of algal blooms, exceeded dredging assessment standards regarding Daechung lake (1.5 mg/g) at all points. Also at all points, total nitrogen exceeded the dredging assessment standard regarding Paldang Lake (1.1 mg/g), but fell short of the standard regarding Daechung lake (3.0 mg/g). Dredging zone was suggested in this study is Chuso water body (WS-6∼WS-12) in Sookchun lake. In relation to sediment pollution levels measured at different depths, LOI tended to decrease as it became deeper. The concentrations of T-N varied depending upon the depth as well as points, but no regular pattern was observed. The depth and site did not significantly influence T-P. From the results of phosphorous release tests, it was shown that total phosphorous release flux was calculated to be 7.2∼15.4 mg/m2/d for anaerobic condition, 0.5∼2.0 mg/m2/d for aerobic condition and 2.0∼4.1 mg/m2/d for facultative condition. Release flux and T-P concentration of surface sediments had positive correlation (R2 0.7871). And The corelation between release flux and DO condition in reactor had strong negative correlation (R2 0.8824).

대전을 자연과 삶이 어우러지는 공간으로

유병로,Yu, Byeong-Ro 대전발전연구원 2009 대전발전포럼 Vol.31 No.-