한국지반환경공학회 논문집 (Journal of the Korean GEO-environmental Society)

  • 제18권4호
  • /
  • Pages.23-29
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  • 2017
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  • 1598-0820(pISSN)
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  • 2714-1233(eISSN)
한국지반환경공학회 (Korean Geo-Environmental Society)
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하수방류수 내 TOC 제거를 위한 전기분해공정의 최적 조건

Optimal Condition of TOC Removal Parameter for Sewage Effluent using Electrolysis Process

  • An, Sang-Woo (Geo-Environments Division, WIZINNOTEK Co. ltd.) ;
  • Jung, Hyuk-Sang (Geo-Environments Division, WIZINNOTEK Co. ltd.) ;
  • Lee, Hui-Kyung (Department of Railroad Construction Safety Engineering, Dongyang University) ;
  • Ko, Jun-Geol (Department of Railroad Construction Safety Engineering, Dongyang University) ;
  • Myoung, Dae-Won (Department of Railroad Construction Safety Engineering, Dongyang University)
  • 투고 : 2017.02.15
  • 심사 : 2017.03.16
  • 발행 : 2017.04.01
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초록

2013년 환경 정책 개정에 따라 총유기탄소(TOC)항목이 수질 및 수생태계 보전에 관한 법률에 도입되었으며, 이러한 정책 시행에 따라 공공하수처리시설에서의 TOC에 대한 수질관리의 필요성이 대두되었다. 본 연구는 실험실 규모 전기분해공정에서 전기화학적 반응을 이용하여 하수방류수 내 TOC 제거특성을 살펴보았다. 실험실 규모의 전기분해공정에서의 실험 결과를 반응표면법에 적용하여 방류수 내 TOC 제거 특성분석을 실시하였다. 중심합성에 사용된 독립변수로는 전해공정의 주요 운전인자인 전극간격($x_1$), 전류밀도($x_2$), 전해질의 농도($x_3$)를 선정하였으며, 종속변수로는 TOC 제거효율(y)이다. 전해공정에서 최적화 조건은 전극간격 50mm, 전류밀도 $10.3mA/cm^2$, 전해질의 농도 0.1M로 조사되었다. 통계학적 결과를 바탕으로 독립변수는 전극간격 > 전류밀도 > 전해질농도의 순으로 작아지는 것으로 분석되었다.

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 STP (Sewage Treatment Plant). In this study, a electrolysis utilizing the electrochemical reaction was investigated in lab-scale experiments for the treatment of TOC in sewage effluent. TOC reduction by a electrolysis was investigated response surface methodology using the Box-Begnken methods were applied to the experimental results. A central composite design was used to investigate the effects of the independent variables of electrode space ($x_1$), current density ($x_2$) and electrolyte concentration ($x_3$) on the dependent variables removal efficiency of TOC (y). The optimal conditions for electrolysis were determined: electrode space, current density and electrolyte concentration were 50 mm, $10.3mA/cm^2$ and 0.1M, respectively. Statistical results showed the order of significance of the independent variables to be electrode space > current density > electrolyte concentration.

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참고문헌

  1. Ahn, S. Y. and Kwon, H. T. (2011), Study on treatment of industrial wastewater using electrolysis, Journal of Water Treatment, Vol. 19, No. 2, pp. 21-28 (in Korean).
  2. An, S. W., Choi, J. Y., Cha, M. W. and Park, J. W. (2010), Adsorption characterization of Cd by coal fly ash using Response Surface Methodology (RSM), Journal of Geo-Environmental Society, Vol. 11, No. 1, pp. 19-26 (in Korean).
  3. An, S. W., Jeong, Y. C., Yoo, J. Y., Min, J. E., Lee, S. J. and Park, J. W. (2013), Optimal condition of operation parameter for livestock carcass leachate using fenton oxidation process, Journal of the Korean Society of Groundwater Environment, Vol. 18, No. 1, pp. 26-35 (in Korean).
  4. An, S. W., Yoo, J. Y., Choi, J. Y. and Park, J. W. (2009), Adsorption characterization of Cd by activated carbon containing hydroxyapatite using response surface methodology, Journal of Korean Society on Water Quality, Vol. 25, No. 6, pp. 943-950 (in Korean).
  5. Baek, J. B. and Lee, G. B (2014), Comparison of sampling and estimation methods for economic optimization of cumene production process, Korean Chemical Engineering Research, Vol. 52, No. 5, pp. 564-573 (in Korean). https://doi.org/10.9713/kcer.2014.52.5.564
  6. Cha, J. H., An, S. W., Chun, S. Y., Park, J. W. and Chang, S. W. (2012), The statistical optimization of TCE dechlorination by geobacter lovleyi using Box-Behnken Design, Journal of Geo-Environmental Society, Vol. 13, No. 11, pp. 37-42 (in Korean).
  7. Jeong, D. H., Cho, Y. S., Ahn, K. H., Chung, H. M., Park, H. W., Shin, H. S., Hur, J. and Han, D. H. (2016), A Study on the determination method of TOC effluent limitation for public sewage treatment plants, Journal of Korean Society of Water and Wastewater, Vol. 30, No. 3, pp. 241-251 (in Korean). https://doi.org/10.11001/jksww.2016.30.3.241
  8. Jo, E. Y., Park, S. M., Cha, J. D., Park, C. G. and Lee, J. Y. (2014), Removal of organic pollutants using 2-stage electrochemcal wastewater treatment system, Journal of Water Treatment, Vol. 22, No. 1, pp. 71-76 (in Korean).
  9. Kim, M. K., Song, Y. I., Lee, S. K., Lee, Y. Y., Choi, B. S. and Lee, Y. H. (2015), A study on advanced treatment of sewage using Fe electrode elctrolysis device, Journal of Water Treatment, Vol. 23, No. 6, pp. 43-51 (in Korean).
  10. Kim, S. H., Yoo, Y. D., Ryu, J. H., Byun, C. D., Lim, H. J. and Kim, H. T. (2010a), Methanation with variation of temperature and space velocity on Ni catalysts, New & Renewable Energy, Vol. 6, No. 4, pp. 30-40 (in Korean).
  11. Kim, Y. J., Lee, J. Y. and Kang, Y. T. (2010b), Study on energy independence plan for sewage treatment plant, Korean journal of air-conditioning and refrigeration engineering, Vol. 22, No. 1, pp. 49-55 (in Korean).
  12. Lee, H. M., Lee, S. S., Hwang, S. W. and Jin, D. B. (2016), Modeling and optimization of high strength wastewater treatment using the electro oxidation process, Korean Chemical Engineering Research, Vol. 54, No. 3, pp. 340-349 (in Korean). https://doi.org/10.9713/kcer.2016.54.3.340
  13. Lee, J. Y., Yi, Y. M. and Uhm, S. H. (2008), Understanding underlying processes of water electrolysis, Korean Chemical Engineering Research, Vol. 19, No. 4, pp. 357-365 (in Korean).
  14. Merzouk, B., Gourich, B., Sekki, A., Madani, K., Vial, C. and Barkaoui, M. (2009), Studies on the decolorization of textile dye wastewater by continuous electrocoagulation process, Chemical Engineering Journal, Vol. 149, No. 1, pp. 207-214. https://doi.org/10.1016/j.cej.2008.10.018
  15. Shim, K. S., Kim, C. H. and Park, K. B. (2004), Economic analysis of hydrogen production technology using water electrolysis, The Korean Hydrogen & New Energy Society, Vol. 15, No. 4, pp. 324-332 (in Korean).