한국지반신소재학회논문집 (Journal of the Korean Geosynthetics Society)

  • 제19권1호
  • /
  • Pages.25-33
  • /
  • 2020
  • /
  • 2508-2876(pISSN)
  • /
  • 2287-9528(eISSN)
한국지반신소재학회 (Korean Geosynthetics Society)
권호 표지
DOI QR코드

DOI QR Code

트리클로로에틸렌(TCE) 선택적 반응에 따른 모래, 칼슘-벤토나이트 및 겔화제 혼합차수물의 투수 특성

Characteristic of Permeability with the Sand, Calcium Bentonite and Solidifier Mixtures according to Selective Reaction of TCE

  • Yun, Seong Yeol (Department of Environmental engineering, The University of Seoul) ;
  • Choi, Jeong Woo (Department of Environmental engineering, The University of Seoul) ;
  • Oh, Minah (Department of Environmental engineering, The University of Seoul) ;
  • Lee, Jai-Young (Department of Environmental engineering, The University of Seoul)
  • 투고 : 2019.12.16
  • 심사 : 2020.02.18
  • 발행 : 2020.03.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 기존 차수재가 수분과의 팽윤성을 갖는 특징을 개선하기 위해 모래, 칼슘-벤토나이트 및 겔화제 혼합물의 트리클로로에틸렌(TCE) 반응에 따른 투수 특성을 평가하였다. 이를 위해 연구 재료의 기본적인 특성 분석, 투수시험을 진행하였다. 투수계수는 칼슘-벤토나이트 혼합 비율이 증가함에 따라 감소하였으며, 겔화제 혼합 비율이 증가함에 따라 증가하였다. 결론적으로, 칼슘-벤토나이트 15%, 겔화제 30% 이상 혼합 시 지하수 유동에서의 투수계수는 α × 10-4 cm/sec 이상으로 분석되어 지하수 유동을 차단하지 않는 것으로 분석되었다. 또한 TCE 반응 시 혼합차수물의 투수계수는 α × 10-7 cm/sec 이하로 분석되어, 차단층 투수계수 조건(1.0 × 10-6 cm/sec 미만)을 만족하였다. 따라서 칼슘-벤토나이트와 겔화제는 TCE로 오염된 토양 및 지하수에 선택적 투수능 변환 특성을 보이는 차수재로서 활용이 가능하다.

To improvement the swelling characteristics of the existing cutoff wall against the moisture, the permeability of the sand, calcium bentonite and solidifier mixture according to the contact with trichloroethylene (TCE) was evaluated. Characteristics analysis and the permeability test of the research materials were performed. The permeability was decreased as the mixing ratio of the calcium bentonite was increased and it was increased as the mixing ratio of the solidifier was increased. In conclusion, when mixing 15% of calcium bentonite and more than 30% of solidifier, the permeability coefficient in the underground water movement was analyzed as more than α × 10-4 cm/sec showing that it does not block the underground water movement. In addition, as the permeability coefficient of mixtures after TCE reaction was analyzed as less than α ×10-7 cm/sec, it satisfied the condition of blocking layer (less than 1.0 × 10-6 cm/sec). Therefore, the calcium bentonite and solidifier can be utilized as barrier that showing the characteristic of percolation ability conversion in soil and underground water contaminated with TCE.

키워드

참고문헌

  1. Bang, W. H. (2017), A study on DNAPL migration characteristics around water-table, Department of geological environmental science, Chonnam national university.
  2. Cheong, C. J. (2008), Behavior and Clean-up Technique of Spilled Oil at Sea and Shoreline, Journal of Korean Society of Environmental Engineers, Special Feature, pp.136-145.
  3. Jeong, H. J. (2016), Oil absorptive properties of polypropylene knit fabric treated with oleophilic acrylic resin, Journal of the Korea academia-industrial cooperation society, Vol.17, No.2, pp.528-535. https://doi.org/10.5762/KAIS.2016.17.2.528
  4. Joziane, G., Meneguin, Murilo P., Moises, Thirugnanasambandham Karchiyappan, Sergio Henrique Bernardo Faria, Marcelino L. Gimenes, Maria Angélica S. D. de Barros and Sivakumar Venkatachalam. (2017), Preparation and characterization of calcium treated bentonite clay and its application for the removal of lead and cadmium ions: Adsorption and thermodynamic modeling, Vol.111, pp.244-252. https://doi.org/10.1016/j.psep.2017.07.005
  5. Kim, J. H and Yi, J. H. (1998), Simulation of DNAPL and LNAPL transport phenomena in unsaturated zone and saturated zone, Journal of the Korean institute of chemical engineers, Vol.36, No.6, pp.846-855.
  6. Kim, T. R., Kim, S. and Chung, J. D. (2019), Characteristics of TCE contamination distribution of groundwater around the workplaces using chloride organic solvents, J. Korea Soc. Waste Manag., Vol.36, No.1 pp.88-96. https://doi.org/10.9786/kswm.2019.36.1.88
  7. Kim, Y. S., Lim, H. S. and Park, J. W. (2015), Comparision of Land Farming and Chemical Oxidation based on Environmental Footprint Analysis, J. Soil Groundw. Environ, Vol.20, No.3, pp.7-14. https://doi.org/10.7857/JSGE.2015.20.3.007
  8. Kiviranta L. and Kumpulainen S (2011), Quality control and characterization of bentonite materials, POSIVA Repor Working Report 2011-84, pp.1-98.
  9. KS F 2314 (2018), Method for unconfined compressiton test of soils, Korea Standards Association.
  10. KS F 2322 (2015), Standard test methods for permeability of saturated soils, Korea Standards Association.
  11. Lee, C. W. and Kim, M. K. (2008), A study on the engineering characteristics of soil-fly ash-bentonite liner, Journal of the Korean Geo-Environmental Society, Vol.9, No.6, pp.21-29.
  12. Lee, J. S. (2001), A dsorption Characteristics of Natural Powdered Oil Absorbent for Marine Oil Pollution, Department of Civil and Environmental Engineering, Korea Maritime and Ocean University.
  13. Lee, S. Y., Lee, J. Y., Jeong, J. T. and Kim, K. S. (2014), Characteristics for the copper exchange reaction by bentonite buffer, J. Miner. Soc. Korea, Vol.27, No.4, pp.293-299. https://doi.org/10.9727/jmsk.2014.27.4.293
  14. Merv Fingas (2013), Review of Solidifiers: An Update 2013, The opinions in this PWSRCAC-commissioned report are not necessarily those of PWSRCAC.
  15. Ming, Q., Yan M., Chengliang, L. and Xinyan, S. (2017), Investigation of the properties of polynorbornene rubber/EPDM blends, Journal of Elastomers & Plastic, Vol.49, No.7, pp. 560-573. https://doi.org/10.1177/0095244316676867
  16. Ministry for Food, Agriculture, Forestry and Fisheries (MIFAFF) (2012), Leachate prevention method at livestock burial site using soil admixed liner.
  17. Ministry of Environment (2004), Development of technology to transform Ca-bentonite and multi-functional media used at landfill liner and its structure.
  18. Ministry of Environment (2019), Soil environment conservation act, Table 3.
  19. Ministry of Environment (2019), Wastes control act, Enforcement decree of the wastes control act, Table 11.
  20. Ratrick J. Powers (1992), Construction dewatering : new methods and applications, New York : Wiley.
  21. Sarvaiya, J., Agrawal K Y. and Bakre L. (2017), Montmorillonite nanoclay as a multifaceted drug-delivery carrier: A review, Journal of Drug Delivery Science and Technology, Vol.39. pp.200-209. https://doi.org/10.1016/j.jddst.2017.03.023
  22. Song, Y. S. and Yun, J. M. (2010), Analysis of Soil Mechanical Characteristics according to the Geological Condition in JangHeung Area, J. Korean Geosynthetics Society, Vol.9, No.1, pp.1-11.
  23. Yun, S. Y., An, H. G., Oh, M. A. and Lee, J. Y. (2019), A study on the Evaluation of Water Permeability and structure for Calcium Bentonite-Sand Mixtures, Journal of the Korean Geosynthetics Society Vol.18, No.2, pp.1-10. https://doi.org/10.12814/JKGSS.2019.18.2.001