• Journal of the Korean Data and Information Science Society
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• v.21 no.5
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• pp.883-890
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• 2010

Illegal waste dumping is one of the major problems that the government agency monitoring water quality has to face. One solution to this problem is to find an efficient way of managing and supervising the water quality under various kinds of conditions. In this article we establish WQMA (water quality monitoring algorithm) based on the time series intervention model. It turns out thatWQMA is quite successful in detecting illegal waste dumping.

• 한국해양학회지
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• v.28 no.2
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• pp.137-141
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• 1993

폐기물의 특성상 유지에서 처리가 곤란하고 처리비용이 과다하게 소용되는 폐기물 을 지정된 해역에서 적정 처리방법에 따라 해양에 배출토록 허용하는 폐기물의 해양배 출 제도가 있다. 폐기물의 해양배출에 대한 법적근거는 국내법으로 해양오염방지법과 폐기물관리법, 수질환경보전법 그리고 오수, 분료 및 춘산폐수의 처리에 관한 법률이 있고 국제협약으로 폐기물 및 기타 물질의 투기에 의한 해양오염의 방지에 관한 협약 (일명 런던덤핑 협약:LDC-London Dumping Convention)이 있다. 여기서는 배출이 허용 된 폐기물의 종류 및 체계와 우리 나라 인근 해역에서의 폐기물의 해양배출 현황과 외 국의 해양배출 현황을 언급하고, 폐기물의 해양배출이 해양환경에 미칠 영향과 폐기물 의 해양배출에 대한 감시체계 그리고 배출해역 관리를 위한 배출해역에 대한 수질조사 에 대하여 언급하였다. 그리고 앞으로의 폐기물의 해양배출제도에 대한 국제적 동향과 향후의 전망을 언급하고, 우리 나라의 입장 및 정책방향에 대하여 언급하겠다.

• Journal of Korean Society of Water and Wastewater
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• v.29 no.4
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• pp.469-479
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• 2015

This study have been conducted to analyze the feasibility of establishing Contamination Warning System(CWS) that is capable of monitoring early natural or intentional water quality accidents, and providing active and quick responses for domestic C_water supply system. In order to evaluate the water quality data set, pH, turbidity and free residual chlorine concentration data were collected and each statistical value(mean, variation, range) was calculated, then the seasonal variability of those were analyzed using the independent t-test. From the results of analyzing the distribution of outliers in the measurement data using a high-pass filter, it could be confirmed that a lot of lower outliers appeared due to data missing. In addition, linear filter model based on autoregressive model(AR(1) and AR(2)) was applied for the state estimation of each water quality data set. From the results of analyzing the variability of the autocorrelation coefficient structure according to the change of window size(6hours~48hours), at least the window size longer than 12hours should be necessary for estimating the state of water quality data satisfactorily.

• Journal of Sensor Science and Technology
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• v.5 no.3
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• pp.75-85
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• 1996

Real time water quality monitoring system in a large area has been developed. The system is hierarchically composed of CCMS(Central Control and Monitoring System), data loggers and water pollution measuring instruments, which enable systematic and efficient data collection and management. Also in this work we designed and constructed the instruments for measuring basic elements in water quality such as salinity, electrical conductivity, temperature, dissolved oxygen and the amount of coli in water.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.492-492
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• 2022

최근 농업용 담수호 내에서 발생하는 녹조 및 수질오염으로 인한 민원이 증가하고 있다. 농업용수로 이용하고 있는 농업용 담수호의 수질관리는 상류유역에서 유입되는 오염원관리가 중요하나 장기적인 유역계획이 수립되어야하므로 즉각적인 수질개선효과를 기대하기 어렵다. 또한 호 내 수질관리는 광범위한 수면적으로 인해 인력 운영 및 시간적 소모가 크며, 일시적인 수질관리만 기대할 수 있다. 장치형 시설을 설치할 경우 막대한 시설비가 소요되며, 지속적으로 체계적인 유지관리가 필요하다. 따라서 담수호 내 수환경 특성을 고려하여 자율감시 및 수처리 장치를 이용한 지속가능한 수질관리가 필요한 실정이다. 본 연구에서는 담수호의 자율적인 수질관리를 위해 무인항법장비와 자동 수처리 장치를 융합한 제품을 제작하여 현장적용을 통해 수질개선 효과를 분석하였다. 무인 자율 이동장치에 설치된 자동 수처리 장치는 녹조발생에 대응하기 위해 환경부에서 고시한 수처리체(황산알루미늄, Alum)를 이용한 약품 살포 장치를 제작하였다. 자율항법장치의 운행 구역을 지정하고, 총 5회 지정된 구역내에서 약품을 살포하고, 미살포 구역을 대조군으로 하여 살포 구역과 수질개선효과를 비교하였다. 비교 결과 수질 항목별 자동 수처리 장치에 의한 수질 저감효율은 ○ COD 13.8%, TOC 18.6%, SS 23.3%, T-N 8.4%, T-P 58.9%, Chl-a 74.4%로 나타났다.

• Journal of Korea Entertainment Industry Association
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• v.15 no.3
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• pp.289-295
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• 2021

Today, the most important factor affecting the quality of human life is thought to be due to the environment. The importance of environmental monitoring systems to improve human life and improve welfare as the magnitude of the damage increases year by year due to the rapid increase in the frequency of hail, typhoons, collapse of incisions, landslides, etc. Is increasing day by day. Among environmental problems, problems caused by water quality have a very high proportion, and as there is a growing concern that the scale of damage will increase when water pollution accidents occur due to urbanization and industrialization, the demand for social water safety nets is increasing. have. In the last 5 years, 259 cases of water pollution (Han River 99, Nakdong River 31, Geum River 25, Seomjin River and Yeongsan River 19, and 85 others) have occurred in the four major river basins. Caused damage. Therefore, it is required to establish a water quality environment management strategy system based on big data that can minimize the uncertainty of the water quality environment by expanding the target of water quality management from the current water quality management system centered on the four major rivers to small and medium-sized rivers, tributaries/branches, and reservoirs. In this paper, we intend to construct and analyze a water quality monitoring system based on big data that can present useful water quality environment information by analyzing the water quality information accumulated for a long time.

• Journal of Korea Water Resources Association
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• v.31 no.6
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• pp.685-694
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• 1998

Protection of groundwater resources from contamination has been of increasing concern throughout the past decades. In practice, however, groundwater monitoring is performed based on the experience and intuition of experts or on the convenience. In dealing with groundwater contamination, we need to know what contaminants have the potential to threat the water quality and the distribution and concentration of the plumes. Monitoring of the subsurface environment through remote geophysical techniques or direct sampling from wells can provide such information. Once known, the plume can be properly managed. Evaluation of existing methodologies for groundwater monitoring network design revealed that one should select an appropriate design method based on the purpose of the network and the availability of field information. Integer programming approach, one of the general purpose network design tools, and a cost to-go function evaluation approach for special purpose network design were tested for field applicability. For the sam contaminated aquifer, two approaches resulted in different well locations. The amount of information, however, was about the same.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.426-426
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• 2018

제 4차 산업혁명의 시대를 맞아 ICT 융합 차세대 물관리 시스템 관련 기술이 핵심적인 역할을 수행하게 될 것으로 예상되며, 이와 함께 다국적 기업의 시장 진출로 인한 경쟁심화가 예상되고 있다. 한편, 인구증가, 도시성장, 산업발전 및 기후변화에 따른 물부족, 물 수요와 물 공급의 불균형, 수질오염 등은 점점 더 심각해질 것으로 예상되고 있다. 또한, 수자원 산업에서 대상시설의 안전하고 경제적인 운영 및 유지관리를 목적으로 하는 운전, 감시, 진단, 보수, 개선 및 이를 위한 의사결정지원 기술인 운영관리(O&M, Operation and Maintenance) 기술의 중요성이 지속적으로 증가하는 추세이다. 스마트워터그리드(SWG)는 ICT 융복합 첨단 수자원 관리기술로 기후변화에 의한 물 부족과 수자원 인프라 노후화로 인한 효율저하 등 물 문제 해결을 위한 차세대 플랫폼으로 주목받고 있으나, 아직까지 스마트워터그리드 시스템 구축을 위한 장치, 부품, 공정, 설계, 시공 기술 등 주로 요소기술 확보를 목적으로 연구되었으며, 시설의 운영 및 유지관리 연구는 거의 진행되지 않아 효율적인 현장적용이 어려운 실정이다. 본 연구에서는 스마트워터그리드 데모플랜트 시설을 대상으로 운영 유지관리 기술의 고도화 기본방향, 세부 핵심기술, 추진방법 등을 제시하고자 한다. 특히 스마트워터그리드의 핵심기술인 AMI 기반 수운영 시스템을 대상으로 IoT 기반의 고효율 저비용 물 공급 체계 고도화 및 지능형 통합 운영 플랫폼 구축, Hybrid형 다중수원 활용 이동식 물 생산 시스템에 대한 운전제어 자가진단 운영관리 유지보수기술 등 원격 무인 자동화 물 생산시설 기술 고도화 개발방안에 대하여 중점적으로 다루고자 한다.

• Journal of radiological science and technology
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• v.38 no.2
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• pp.163-170
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• 2015

The interest of the people in the radioactive contamination of the water has increased significantly and the study about analysis and management of radioactive materials are being actively conducted. And monitoring spots have been expanded to the range of public water as well as drinking water by publishing the rule of drinking water quality standards and examination in the Environmental Enforcement Ordinance No. 553 of Korea. In this study, US EPA was investigated as the foreign advanced cases and the way that is appropriate for the Korea was sought by analyzing investigate radionuclide, interval and management. As a result, in the selection part of investigate radionuclide, geological survey, status of nuclear power plants and the presence of the use of artificial radionuclides of the Korea should be investigated and additionally after the selection of a few radionuclides, the systems should be extended to cover all possible radionuclides by considering radioactive pollution levels in humans may be exposed due to the annual drinking water. In the part of the investigate interval, the concept(MCL, DL) should be set up for preventing concentration detection of above MCL and it needs to the maintenance and management. For example, when the concentration is more than MCL, it should be investigated on a quarterly and when the concentration is lower than MCL, it should be investigated to each different interval and management. And the US EPA divided the management area and make the roadmap for managing drinking water. The each classified area has been organized to match the state budget and labor force and the individual data have been managed effectively by HPGe, the NaI, TLD and so on.

• The Korean Journal of Malacology
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• v.25 no.3
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• pp.213-222
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• 2009

In order to investigate contamination of heavy metal in seawater and cultured oyster, samples were collected November 2003 to July 2004 from 12 sites (13 sites for seawater) along the coast of Tongyeong, Korea. The mean concentrations of metal in oyster tissues were as follows: 0.09 (0.01-0.3) ${\mu}g/l$ for Cd, 0.47 (0.01-1.4) ${\mu}g/l$ for Cr, 0.59 (0.2-2.3) ${\mu}g/l$ for Ni, 1.02 (0.1-4.2) ${\mu}g/l$ for Pb and 0.48 (0.01-3.9) ${\mu}g/l$ for Hg in the seawater, whereas 2.45 (0-5.47) mg/kgDW for Cd, 3.63 (0.10-12.91) mg/kgDW for Cr, 3.2 (0.01-15.73) mg/kgDW for Ni, 3.51 (0.01-6.47) mg/kgDW for Pb and 0.39 (0.004-0.74) mg/kgDW for Hg, respectively. Most metal concentration values were below the permissible range for the related regulations. Mean bioconcentration factors (BCF) for each metal were as follows: 38,964 (1,771-207, 171) for Cd, 9,583 (1,231-80, 162) for Cr, 191 (3-20, 980) for Ni, 1,416 (245-5, 207) for Pb and 180 (5-716) for Hg, respectively. The BCF values from this study corresponded to the transitional phase from the pristine to the contaminated waters. Notably, Cd showed the highest BCF, which suggest that the Pacific oyster could be utilized as a useful biomarker for Cd contamination in sea water. The multidimensional scaling analysis suggested that the metal contaminants are mainly originated from combustion of fossil fuel and accumulated to oyster through food web.