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      • KCI등재

        전산정보를 활용한 오염총량관리 배출경로별 인구 산정방법 개발

        황하선,박경옥,이한필,정제호,신동석,강한 한국환경기술학회 2019 한국환경기술학회지 Vol.20 No.2

        The “Population by discharge way” used for TPLM(Total Pollution Load Management) is estimating the population using basic data, because it is difficult to conduct an actual survey due to technical and financial problems. The current population estimation method is used in the Dong(ri) range, and it is difficult to confirm whether it will be reflected in actual individual household sewage treatment, and there is a problem that the basic data is uncertain. Until now, with the development of computer information technology, the Ministry of Public Administration and Local Government has provided population information in units of lot number that are more accurate than before, and research on new population estimation methods using this is needed. In this study, the area where the distribution of population according to treatment type was diverse was selected as the target site. Using population data of various basic data(resident registration computer information, sewage treatment area map, etc.), the population by discharge way was estimated more precisely and compared with the existing method. According to the public sewer population estimates, it is found that the new method (91.2%) is higher than the conventional method (85.7%) and more similar to the sewerage statistics treatment rate (91.3%). The personal sewage population estimation results show that the new method (7,897) is less than the conventional method (19,807) and more similar to the personal sewage population (9,769) in sewer statistics. Comprehensively, the use of address information population data shows similar values to official sewer statistical data, which is a relatively reliable result. However, the quality of the data is important because the accuracy of the data varies depending on the degree of matching between the address information data and the basic data used. Therefore, it is necessary to establish a system that can manage basic data effectively.

      • KCI등재

        저강우연도 지하수 관개 필지논에서 수도재배기간 동안의 물질수지

        황하선,윤춘경,전지홍,김병희 한국농공학회 2002 한국농공학회논문집 Vol.44 No.4

        Field experiment was performed to investigate water and nutrient mass balances in paddy field with groundwater irrigation from May to October, 2001. The total water inflow was about 1,183mm in which rainfall, overflow from upstream paddy, and groundwater irrigation accounted for 43, 30, and 27%, respectively. Notice that the precipitation of the study period was less than the average annual precipitation. The total drainage was almost balanced with the inflow and more than half of it was occurred by surface drainage. From the nutrient mass balance analysis, the T-P output (17.56kg/ha) was estimated slightly lower than the input (20.90kg/ha) and the T-N output (130.41kg/ha) was slightly greater than the input (129.24kg/ha). However, the difference was within the expectation and the nutrient mass was thought to be balanced considering uncertainties in field experiment and other activities not included in the study such as algae and soil microorganisms. The surface discharge of nutrient, which was about 10% of total nutrient output, was mainly affected by fertilization and rainfall runoff. Therefore, prudent surface drainage plan might be necessary particularly for the fertilization period to prevent degradation of receiving water quality. The study was performed under abnormally low rainfall compared to the average annual rainfall record, and further monitoring in diverse rainfalls and irrigation methods is recommended to estimate nutrient behavior in the paddy field more reasonably. 본 연구는 경기도 여주군 가남면 오산리에 위치한 지하수관개 논을 대상으로 하여 영농기간인 2001년 5월부터 10월까지 필지단위 포장에서의 물수지와 영양물질 수지를 분석하였으며 그 연구결과를 요약하면 다음과 같다.1. 물수지에서 논으로 총유입량은 1,183 mm이었으며 이 중 강우에 의한 공급이 512 mm(43%), 윗논에서 유입은 358 mm(30%), 지하수에 의한 관개량이 312 mm(27%)를 차지하여 지하수관개 논의 경우 강우에 의한 유입수량이 가장 많은 것으로 나타났다. 또한 총손실수량은 1,161 mm이었으며 이 중 물꼬에서 배출된 배출수량은 595 mm(51%), 증발산량에 의한 손실수량은 488 mm(42%), 침투에 의한 손실량은 78 mm(7%)로서 물꼬를 통한 배출수량과 증발산량이 대부분을 차지하였다. 물꼬를 통한 배출수량은 낙수기에 대부분 이루어졌으며, 증발산량은 벼의 성장과 거의 비례하여 증가하는 경향을 나타내었다.2. 영양물질수지에서 T-P의 경우는 총유입량은 20.90 kg/ha이었는데 이 중 비료에 의한 공급량이 19.64 kg/ha(94%), 윗논에서 유입량 0.97 kg/ha (5%), 지하수관개에 의한 유입량 0.28 kg/ha(1%) 순이었고 강우에 의한 유입량 0.01 kg/ha로서 매우 적었으며 대부분이 비료에 의해 공급되었다. T-P의 총손실량은 17.56 kg/ha이었으며 이 중 벼 흡수량은 16.34 kg/ha(93%)이었고 물꼬로부터의 배출량은 1.22 kg/ha(7%)로써 벼 흡수량이 대부분을 차지하였다. 3. 영양물질수지에서 T-N의 경우는 총유입량이 129.24 kg/ha이었으며 이 중 비료에 의한 공급량은 110.00 kg/ha(85%), 윗논에서 유입량은 8.02 kg/ha(6%), 강우에 의한 유입량 7.97 kg/ha (6%), 그리고 지하수 관개에 의한 유입량 3.25 kg/ha(3%)로서 비료에 의한 공급량이 가장 큰 비중을 차지하였다. 또한 T-N의 총손실량은 130.41 kg/ha로써 이 중에 벼 흡수량이 115.95 kg/ha (89%), 물꼬를 통한 배출량이 12.73 kg/ha(10%), 그리고 침투에 의한 손실량이 1.73 kg/ha(1%)로써 벼 흡수량이 가장 큰 비중을 차지하였다. 4. 전체적으로 지하수관개 필지논에서 물수지와 영양물질수지를 비교해보면 약간의 차이는 있었으나 전반적으로 균형을 이루었던 것으로 조사되었다. 영양물질수지에서 발생한 약간의 차이는 본 연구에서 조사하지 않았던 토양미생물이나 조류(algae) 등에 의한 영향을 고려한다면 비교적 유입과 손실이 균형을 이루었다고 평가할 수 있다. 또한 기존의 연구결과와 비교하면, 지표수관개 논에서의 부하량보다 현저하게 낮은 값을 나타내어 관개수의 종류와 강우량의 크기에 따라 부하량에도 차이가 있으리라 판단된다. 따라서, 앞으로의 오염총량제의 논에서의 비점오염부하량 산정시 이를 반드시 고려하여야만 합리적인 부하량 산정이 가능하리라 판단된다.5. 지하수관개 필지 논에서의 투입된 영양물질은 벼에 의하여 거의 흡수되고 약 10% 정도가 지표배수형태로 수계로 배출되었는데, 지표배수는 영양물질의 시비가 이루어진 후 첫 번째 강우유출에 의해 대부분이 이루어진 것으로 나타났다. 따라서, 수질관리를 위하여 논에서의 영양물질배출 감소가 필요할 경우에는 시비 직후 강우유출을 효과적으로 억제하는 것이 매우 중요하며 이를 위해서는 특히 영농초기에 물꼬관리가 신중하게 이루어져야 할 것으로 생각된다.

      • KCI등재

        수질오염총량 단위유역의 유량조건별 수체 손상 평가를 위한 부하지속곡선 적용성 연구

        황하선 ( Ha Sun Hwang ),윤춘경 ( Chun Gyeong Yoon ),김지태 ( Ji Tae Kim ) 한국물환경학회 2010 한국물환경학회지 Vol.26 No.6

        The purpose of this study was evaluated on the applicability of Load Duration Curve Method (LDC Method) using HSPF watershed model and sampling data for efficient TMDLs in Korea. The LDC Method was used for assessment pollutant characteristics in watershed and water quality variation in each water flow level. Load Duration Curve is applied for judge the level of impaired water-body and can be estimated the impaired level by pollutant, such as BOD, I-N, and T-P in this study depending on variation of stream flow. As a result, BOD, T-P was usually exceed the standard value at low flow and dry hydrologic period. Improvement of effluent concentration from WWTP and riparian buffer protection zone are effective to improve the water quality. T-N showed the worst condition at mid-range hydrologic period and moist hydrologic period. Therefore, soil erosion control program and BMPs for non-point source pollution control is effective for recovery the water quality, which can be useful method for management of water quality in the plan of recovery water quality spontaneously. Applicability of LDC Method was evaluated in the Nakbon A watershed. However, we need to consider more detailed and accumulated data set such as accurate G1S data and detail pollution data, and WWTP discharge water quality data for accurate evaluation of watershed. Overall, The LDC Method is adequate for evaluation of watersheds characteristics, and its application is recommended for watershed management and TMDL Implementation.

      • KCI등재

        관개수원에 따른 논에서의 영양물질 배출 특성

        황하선 ( Ha Sun Hwang ),공동수 ( Dong Soo Kong ),신동석 ( Dong Suk Shin ),전지홍 ( Ji Hong Jeon ) 한국물환경학회 2004 한국물환경학회지 Vol.20 No.6

        Field experimental study was performed to examine characteristics of nutrient export from paddy rice fields with irrigation practices. Experimental fields with surface-water and ground-water irrigation were monitored and analyzed during rice culture period. The water balance showed that outflow generally balanced the inflow showing that about half (58∼68%) of total outflow was lost by surface drainage. Water and nutrient export are more in surface-water irrigation paddy than in ground-water irrigation paddy. The reasons might be more irrigation water available and easy to use in surface-water irrigation. If irrigation water reduced, it could result in reduction of nutrient export in paddy rice fields, which can save water and protect water quality. However, deviation from conventional standard practices might affect the rice yield and further investigations are necessary.

      • 수도재배에서 유입수의 농도와 시비량의 변화에 의한 질소, 인의 Mass Balance

        황하선 ( Hwang Ha Sun ),윤춘경 ( Yoon Chun Gyeng ) 한국농공학회 2000 한국농공학회 학술대회초록집 Vol.2000 No.-

        This study were conducted to evaluate the mass balance of phosphorus and nitrogen with cropping in experimental pot where the mass of input concentration, and fertilization were variable. Four treatments include CSWNF, TWCF, SWNF. And these cases were compared to the control case of tap water irrigation with conventional fertilization (CONTROL). Fertilization were following conventional fertilization , N : P : K = 11kg : 7kg : 8kg. Input water loading was CSWNF (N:48.7g ,P:3.6g), TWCF(7.8g, 0.6g), SWHF(38.8g ,2.9g), TWNF(38.8g, 2.9g ) and CONTROL(0g ,0g ) The result is nitrogen decrease rate; TWCF(19.2%), SWHF(14.9%), CSWNF(9.2%) and SWCF(5.6%). phosphorous decrease rate ; TWCF (10%), SWHF(3.7%), SWCF(0.9%) and CSWNF(0.3%).

      • KCI등재

        낙동강수계 3단계 광역시,도 경계지점 목표수질 설정을 위한 관리권역 및 관리목표 설정 방법 연구

        황하선 ( Hasun Hwang ),박지형 ( Jihyung Park ),김용석 ( Yongseok Kim ),류덕희 ( Doughee Rhew ),최유진 ( Yujin Choi ),이성준 ( Sungjun Lee ) 한국물환경학회 2015 한국물환경학회지 Vol.31 No.5

        The current Total Pollution Load Control (TPLC) sets the Target Water Quality (TWQ) by utilizing the delivery ratio, unit loads, and water quality modeling, it also allocates the watershed’s permitted discharge load. Currently, common target pollutants of every unit watershed in TPLC are BOD and T-P. This study has reviewed the 1th and 2th of TWQ setting process for the Nakdong River 3th TWQ setting in Total Pollution Load Control (TPLC). As a result of review, 1th and 2th were divided into one management basin (mulgeum) for setting management goals. However, 3th was divided into six management basins (mulgeum, gnagjeong, geumho river, nam river, miryang river, end of nakdong river). The principle of management goal setting were to achieve the objective criteria of Medium Areas for the linkage of the water environment management policy. And Anti-Degredation (principle of preventing deterioration) were applied to the 3th TWQ. Also, additional indicators were considered in accordance with the reduction scenarios for the final management goals.

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