• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 춘계 학술발표회 논문집
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• pp.1384-1389
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• 2005

A real-time monitoring system for in-situ soil remediation technologies is developed and then applied to electrokinetic remediation technique in the field trial tests during 150days. The developed system is consisted the controlled program based on internet web page, data logger, measurement instruments and so on. In the measured items there are pH, temperature, electrical current and potential, vacuum pressure. The results indicated that the system is successively applied to electrokinetic remediation technique, and further research considering economic view and multi purpose system for in-situ soil remediation technologies is needed.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2005년도 학술발표논문집
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• pp.355-360
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• 2005

The properties of contaminants, contaminated soil, and the elapsed time are important factors to in-situ soil remediation. Gabr et. al. (1996) derived the solution equation of contaminant concentration ratio as initial one $(C/C_0)$ with time and spatial changes in contaminated area with vertical drains. The contaminant concentration ratio $(C/C_0)$ is analyzed with time and spatial changes as varying the effective diameter, porosity, shape factor, density of contaminated soil and temperature in ground and unit weight, viscosity of contaminants by using FLUSH1 model. Results from numerical analysis indicate that the most important factor to the in-situ soil remediation using vertical drains is the effective diameter of contaminated soil. It also shows that the viscosity of contaminants, porosity of soil, shape of soil, temperature in ground, unit weight of contaminants are, in order, affected to the soil remediation but density of soil is insignificant to the soil remediation.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2004년도 임시총회 및 추계학술발표회
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• pp.286-289
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• 2004

On site, In situ soil remediation technologies are very important among the remediation technologies and in general efficiency of these technologies are turned to site characterization and environmental condition. specially using of only one technology has so many limitation factors. for example, existing state of tailing and channeling and so on. actually, filled land have high concentration cation exchange capacity because of existence in abundance soil organic matter. Therefore we used various on site in Situ technologies by phase for overcome the limitation factors. Target site is petroleum (diesel) impacted filled land and using technologies are SVE(Soil Vapor Extraction), BV(Bioventing), Bioremediation, Soil flushing, Chemical oxidation.

• 기술사
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• 제41권3호
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• pp.35-39
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• 2008

The most common soil contaminants are petroleum-based. Hydrocarbons from diesel fuel and gasoline are widespread problems, as are total petroleum hydrocarbon(TPH). There are two distinct classes of soil remediation: in-situ, or on-site, and ex-situ, or off- site. On-site cleanups are often preferred because they are cheaper. On the other hand, excavating a contaminated area and transporting it to a remote site before cleaning it can often be more complete. Ex-situ remediation also has the added bonus of taking the bulk of contaminants off-site before they can spread further. In addition, in-situ situations are limited because only the topside of the soil is accessible.

• 한국지하수토양환경학회지:지하수토양환경
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• 제12권3호
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• pp.1-9
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• 2007

수질오염 총량제가 시행됨에 따라 깨끗한 수자원을 확보하기 위한 오염퇴적물의 관리 및 처리 필요성이 더욱 높아지고 있다. 본 논문에서는 오염퇴적물의 발생원과 오염퇴적물이 수질에 미치는 영향을 살펴보고, 오염퇴적물의 관리방향을 제시하였다. 오염퇴적물을 처리하기 위한 공법으로 준설공법과 자연정화법, 현장고정화/안정화, 생물학적 현장처리, 화학적 현장처리 공법에 대하여 요약 제시하였다. 또한 새롭게 대두되고 있는 캡핑공법을 소개하고, 오염퇴적물 처리를 위한 복합공법의 적용에 대한 개념을 제시하였다.

• 한국지반신소재학회논문집
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• 제5권2호
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• pp.1-8
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• 2006

오염토양의 현장정화에 있어서 지반 및 오염물질의 물성치는 정화에 소요되는 시간과 함께 매우 중요한 고려사항이다. Gabr 등(1996)은 연직배수재가 설치된 오염지반에서 시 공간적 변화에 따른 초기오염농도에 대한 오염농도비($C/C_0$)를 구하는 식을 유도하였다. 본 연구에서는 Gabr 등이 유도한 식의 전산모형 FLUSH1을 이용하여 오염지반 흙의 유효입경, 간극률, 형상계수, 밀도, 지반의 온도와 오염물질의 단위중량 및 점성계수가 오염정화에 미치는 영향을 알아보기 위하여 시 공간적 변화에 따른 오염농도비($C/C_0$)를 분석 하였다. 분석결과 연직배수재가 설치된 오염지반에서 정화에 크게 영향을 미치는 인자는 오염지반 흙입자의 유효입경인 것으로 나타났으며, 그 다음으로 오염물질의 점성, 오염지반 흙의 간극율, 형상계수, 지반의 온도, 오염물질의 단위중량, 흙의 밀도 순으로 분석되었다. 오염지반 흙의 밀도는 오염정화에 미치는 영향이 아주 작은 것으로 나타났다.

• 한국지하수토양환경학회지:지하수토양환경
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• 제27권1호
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• pp.1-16
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• 2022

In-situ activated carbon (AC) amendment is a promising remediation technique for the treatment of sediment impacted by hydrophobic organic contaminants (HOCs). Since its first proposal in the early 2000s, the remediation technique has quickly gained acceptance as a feasible alternative among the scientific and engineering communities in the United States and northern Europe. This review paper aims to provide an overview on in-situ AC amendment for the treatment of HOC-impacted sediment with a major focus on its working principles. We began with an introduction on the practical and scientific background that led to the proposal of this remediation technique. Then, we described how the remediation technique works in a mechanistic sense, along with discussion on two modes of implementation, mechanical mixing and thin-layer capping, that are distinct from each other. We also discussed key considerations involved in establishing a remedial goal and performing post-implementation monitoring when this technique is field-applied. We concluded with future works necessary to adopt and further develop this innovative sediment remediation technique to ongoing and future sediment contamination concerns in Korea.

• Korean Chemical Engineering Research
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• 제45권4호
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• pp.311-318
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• 2007

국내의 평균적인 토양오염도는 매년 증가하고 있으며, 오염물질의 지속성 및 잔류성이 큰 토양오염의 특성상 이를 복원하기 위해서는 막대한 비용이 소모될 것으로 추정된다. 우리나라에서는 토양 오염에 대한 사회적 관심이 증가함에 따라 1990년대 중반부터 토양 환경 관리와 복원을 위해 정책적으로 복원 기술의 개발과 오염토양 복원 사업을 추진하고 있다. 오염토양 복원 기술은 처리 위치별로 원위치 기술과 비원위치 기술로 나뉘며, 오염원의 제거방법에 따라 생물학적, 물리화학적, 열적 기술로 분류할 수 있다. 국내에서는 군부대 및 철도청 부지, 소규모의 유류 오염 지역에 대해 복원 사업을 실시한 사례가 대부분이며 석유화학 단지내의 오염 등은 회사 자체에서 내부적으로 처리하고 있어 일반에 공개되지는 않고 있지만 그 규모는 상당한 것으로 추산되고 있다. 대부분의 복원사업에는 가장 경제성이 입증된 토양증기추출법, 생물학적 통풍법과 같은 원위치 정화기술이 사용되었다. 최근에는 첨단 기술을 도입하여 환경친화적 토양 복원 기술을 개발하려는 연구가 진행 중이며, 이러한 연구의 예로서 나노 기술과 분자 생물학적 기법을 이용한 복원 기술 개발, 개별 기술의 한계를 극복하기 위한 통합기술 개발 등이 있다. 효율적인 오염토양의 복원을 위해서는 오염물질과 오염부지의 특성을 고려하여 연구 대상 기술의 현장 적용성을 높여야 하며, 무엇보다 토양에 대한 인식 변화와 환경 개선을 위한 지속적인 노력이 필요하다.

• 한국지하수토양환경학회지:지하수토양환경
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• 제17권4호
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• pp.44-50
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• 2012

A new type of chemical oxidation technology utilizing micro bubble ozone oxidizer and a pneumatic fracturing equipment was developed to enhance field applicability of a traditional chemical oxidation technology using hydrogen peroxide as an oxidizer for in-situ soil remediation. To find an efficient way to dissolve gaseous ozone into hydrogen peroxide, ozone was injected into water as micro bubble form then dissolved ozone concentration and its duration time were measured compared to those of simple aeration of gaseous ozone. As a result, dissolved ozone concentration in water increased by 31% (1.6 ppm ${\rightarrow}$ 2.1 ppm) and elapsed time for which maximum ozone concentration decreased by half lengthened from 9 min to 33 min. When the developed pneumatic fracturing technology was applied in sandy loam, cracks were developed and grown in soil for 5~30 seconds so that the radius of influence got longer by 71% from 392 cm to 671 cm. The remediation system using the micro bubble ozone oxidizer and the pneumatic fracturing equipment for field application was made and demonstrated its remediation efficiency at petroleum contaminated site. The system showed enhanced remediation capacity than the traditional chemical oxidation technology using hydrogen peroxide with reduced remediation time by about 33%.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2004년도 임시총회 및 추계학술발표회
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• pp.199-202
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• 2004

In this study the field-scale tests were performed in which in-situ E/K remediation technologies were applied, and then the results were present. For traditional E/K remediation method the efficiency of remediation is not large, but the enhanced method with citric acid significantly increases the removal efficiency. Also EDTA, reported as a good enhancement agent for removal of heavy metals, is similar to that of citric acid. Therefore citric acid is preferred rather than EDTA in view of the cost on the contaminant removal per unit concentration.