• 대한환경공학회지
• /
• 제34권2호
• /
• pp.119-125
• /
• 2012

물 환경 정책수립에 기초자료로 활용되는 지류하천 수질 유량모니터링 결과는 수질오염총량관리제의 시행에 있어 가장 핵심적이며 중요한 자료이다. 본 연구에서는 지류하천 수질 유량모니터링 자료가 수질오염총량관리제를 시행하는데 있어 유역현황 분석, 단위유역의 목표수질 만족여부 평가, 시행계획 수립대상유역의 선정, 하천그룹화 방법을 이용한 수질개선 하천유역의 선정 등에 어떻게 활용되는지를 소개하고자 하였다. 충청남도 금강수계의 37개 지류하천 수질 유량모니터링 자료를 이용하여 유역현황을 분석한 결과, 금강 중 하류지역에 위치하고 있는 지류하천의 유량이 대부분 많은 것으로 나타났으며, 논산천 유역에 위치한 하천들은 수질항목에 관계없이 수질농도가 상대적으로 높은 경향을 보였다. 해당 단위유역의 지류하천 수질과 관계없이 본류 중심의 수질 유량모니터링 결과로 목표수질 만족여부가 결정되고 시행계획 수립대상지역이 선정되는 문제점을 지류하천 수질 유량모니터링 결과를 활용하여 개선할 수 있었다. 또한, 지류하천 수질 유량모니터링 결과에 기초한 하천그룹화 방법으로 수질개선이 필요한 하천유역을 선정할 수 있었으며, 충청남도 금강수계에서는 하천유량이 많고 수질농도가 높은 논산천, 병천천, 석성천, 조천 유역의 하천들이 오염원 저감을 통한 수질개선이 우선적으로 필요한 것으로 나타났다.

• 한국수자원학회:학술대회논문집
• /
• 한국수자원학회 2007년도 학술발표회 논문집
• /
• pp.1-7
• /
• 2007

New Zealand is a hydrologically diverse and active country. This paper presents an overview of the major hydrological issues and problems facing New Zealand and provides examples of some the research being undertaken to solve the problems. Fundamental to any environmental decision making is the provision of good quality hydrometric data. Reduced funding for the national hydrometric network has meant a reduction in the number of monitoring sites, the decision on how to redesign the network was made using information on geographic coverage and importance of each site. New Zealand faces a major problem in understanding the impacts of rapid land use change on water quantity and quality. On top of the land use change is overlain the issue of agricultural intensification. The transfer of knowledge about impacts of change at the small watershed scale to much larger, more complex watersheds is one that is attracting considerable research attention. There is a large amount of research currently being undertaken to understand the processes of water and nutrient movement through the vadose zone into groundwater and therefore understanding the time taken for leached nutrients to reach receiving water bodies. The largest water management issue of the past 5 years has been based around fair and equitable water allocation when there is increasing demand for irrigation water. Apart from policy research into market trading for water there has been research into water storage and transfer options and improving irrigation efficiency. The final water management issue discussed concerns the impacts of hydrological extremes (floods and droughts). This is of particular concern with predictions of climate change for New Zealand suggesting increased hydrological extremes. Research work has concentrated on producing predictive models. These have been both detailed inundation models using high quality LIDAR data and also flood models for the whole country based on a newly interpolated grid network of rainfall.

• 청정기술
• /
• 제26권1호
• /
• pp.39-54
• /
• 2020

본 연구에서는 경상남도 지역의 지하수 수질 특성을 파악하고 효과적인 지하수 관리를 위한 기초적인 자료를 제공하기 위하여 지하수수질측정망 자료를 이용하여 심도와 지질별로 분석하였다. 토양지하수정보시스템의 배경수질전용측정망을 통하여 2013년부터 2017년까지 5년 동안의 503 세트 자료를 수집하였다. 총대장균군과 몇 극소량 존재하는 항목 즉 수은, 페놀 등을 제외한 수질매개변수는 심도와 지질에 따라 유의하거나 아주 유의하였다. 심도가 깊어짐에 따라 pH와 전기전도도는 증가하였고, 수온, 용존산소 산화물 환원 전위, 비소, 총대장균군 그리고 탁도는 감소하였고, 먹는물 수질 부적합율은 낮아졌다. 양이온과 음이온의 농도 합은 쇄설성퇴적암에서 가장 높았고 변성암에서 가장 낮았다. 먹는물 수질 부적합율은 변성암에서 가장 높았고 쇄설성퇴적암, 미고결퇴적물, 그리고 관입화성암 순이었다. 상층관정과 쇄설성퇴적암의 일부 지점에서 외부 오염물질에 의한 오염의 가능성을 의미하는 Na-Cl 수질특성을 보였다.

• 상하수도학회지
• /
• 제30권3호
• /
• pp.241-251
• /
• 2016

As the Enforcement Ordinance of Environmental Policy Act was revised in 2013, total organic carbon(TOC) was added as an indicative parameter for organic matter in Water and Aquatic Ecosystem Environmental Criteria. Under these imminent circumstances, a regulatory standard is needed to achieve the proposed TOC limitation control water quality from the public sewage treatment plants(PSTWs). This study purposes to present the determination method for TOC effluent limitation at the PSTWs. Therefore we investigate the TOC effluent limitation of foreign countries such as EU, Germany and USA, and analyse the effluent water qualities of PSTWs. In using these TOC data, we review apprehensively the statistics-based, the technology-based, and the region(water quality)-based determination method of TOC effluent limitation for PSTWs.

• 한국물환경학회지
• /
• 제24권5호
• /
• pp.611-617
• /
• 2008

It is necessary to analysis the data characteristics of discharge and water quality for efficient water resources management, aggressive alternatives to inundation by flood and various water pollution accidents, the basic information to manage water quality in lakes and to make environmental policy. Therefore, the present study applied Self-Organizing Map (SOM) showing excellent performance in classifying patterns with weights estimated by self-organization. The result revealed five patterns and TOC versus rainfall-storage data according to the respective patterns were depicted in two-dimensional plots. The visualization presented better understanding of data distribution pattern. The result in the present study might be expected to contribute to the modeling procedure for data prediction in the future.

• 한국환경과학회지
• /
• 제23권12호
• /
• pp.2071-2082
• /
• 2014

In this study, the environmental consciousness of Daegu citizen on conservation planning considering the regional characteristics was investigated. Data were collected throughout a survey and 1400 people were selected using a stratified sampling method based on populations of Daegu administration district. Results wee followings; First, the levels of environmental consciousness were different dependent on districts' characteristics. Second, poor awareness on Daegu Agenda 21 (Clear and Green Daegu 21) were shown. Daegu Agenda 21 is the action plan for the sustainable environmental conservation activities of the City of Daegu. Third, waste was the most serious environmental problems of Daegu, air quality was second worst, and third was river water quality from the survey, but differentiated awareness was shown dependent on regional spatial factors and pollution emission factors. Last, a public environmental education was the most important issue to make invigorations and progress for future environmental policy.

• 한국수자원학회논문집
• /
• 제43권11호
• /
• pp.957-965
• /
• 2010

국민들의 삶의 질과 직접적으로 연관되어 있는 생활용수의 수요 관리 및 공급을 위한 적절한 투자 등 합리적인 정책을 수립, 시행하기 위해서는 생활용수의 경제적 가치에 관한 정확하고 객관적인 정보가 필요하다. 본 연구에서는 수요함수 접근법을 이용하여 16개 시도의 생활용수의 소비자 잉여 및 경제적 가치를 추정하였다. 분석결과, 2009년 전국의 생활용수의 $m^3$당 소비자 잉여와 경제적 가치는 각각 1,180.7원과 1,812.8원으로 추정되었으며 시도별 1,082.7원에서 3,268.6원의 범위를 갖는 것으로 나타났다. 또한 지역에 상관없이 비가정용수의 경제적 가치가 가정용수의 경제적 가치를 초과하였고, 수돗물의 가격에 비해 생활용수의 경제적 가치는 매우 높은 것으로 나타났다. 본 연구결과는 생활용수 공급의 경제적 편익에 대한 정보로 활용될 수 있으며 더 나아가 수도요금 산정의 배경자료로도 참고할 수 있을 것이다.

• 한국물환경학회지
• /
• 제39권4호
• /
• pp.343-355
• /
• 2023

After the implementation of the total pollution load control system, the effect of improving river water quality by expanding investments in basic environmental facilities, inducing operational efficiency, and reducing the load of various pollutants was clear. However, since the implementation of the system, the management of non-point pollutants has been neglected; management focused on specific substances (biochemical oxygen demand (BOD) and total phosphorus (T-P)) and lacked specific cause analysis and action plans, failed to establish a relationship between water quality and pollution load, failed to reflect stakeholder demands for river water quality management, and failed to apply technical conditions. Therefore, to overcome the limitations raised and achieve a practical and efficient advanced total pollution system, the current system was partially improved and will continue to be improved. This study analyzed the performance and limitations of the total pollution system and introduced recent improvements and the contents that are being improved. The main contents included reducing emissions and reduction monitoring, using water quality tele-monitoring system (TMS) data and self-measurement data, adding population-inducing facilities, and adjusting regional development projects from 20 to 30 multi-family housing units, currentizing each pollutant source according to the roadmap. If the system is improved in a developmental direction and responds to various changes, it will be a more practical and effective policy.

• 한국물환경학회지
• /
• 제34권5호
• /
• pp.462-469
• /
• 2018

There are differences in method and cycle of flow rate survey depending on purpose of the operating department. To verify and use results of flow data according to the purpose, flow data of the directly measured and tele monitoring system were compared to verify validity. Flow measurement in the Ministry of Environment is aimed at setting up a standard flow of target water quality for water quality management and securing flow data of low and normal water level seasons for water quality evaluation. In this study, correlation analysis result ($R^2$) of same time zone data by direct measurement and tele monitoring system (TMS) at Seombon D point, a unit watershed of Seomjin river, for six years ('10 ~ '15) according to implementation of Total Daily Maximum Load (TDML) was wading 0.716, boating 0.962 and on bridge 0.943, and effectiveness of measurement method was verified by characteristics of flow duration as a season of dry and low-water; normal and high water are appropriate for wading, boating, and on bridge respectively. Results revealed it is reasonable to use directly measured results using the wading and boating method for low water level and dry seasons, and TMS data for rainy seasons. It can be used important data for future policy decisions.

• 한국환경보건학회지
• /
• 제42권5호
• /
• pp.293-301
• /
• 2016

Objectives: This paper presents the current development progress of environmental health indicators (EHIs) in the Republic of Korea and discusses the utilization, limitations and prospects of EHIs. Methods: The development process and assessment criteria of EHIs were established based on the DPSEEA (Driving force-Pressure-State-Exposure-Effect-Action) framework with reference to that of the World Health Organization-Europe. In order to explore the applicability of EHIs, a case study was performed to compare the atmospheric environmental health status between the Republic of Korea and European region countries using six indicators. Results: Through the development process, 23 indicators in five areas including air quality, indoor air quality, climate change, chemicals, and water quality were developed, mostly using national statistical data. As a result of the case study comparing environmental health indicators in air quality between the Republic of Korea and Europe, it could be useful to understand the different situation of air pollution source, emission, exposure and health effects. Conclusion: In order for EHIs to compare environmental health status and be used as an environmental health policy development tool for vulnerable areas and related factors, it is necessary to develop further indicators for various issues other than air quality and conduct additional research on their interpretation and related implications, such as policy implementation effects.