• Analysis of the Characteristics of the Change in the Moisture Rate of Landfill with Recirculation Water Injection
  • Young-Kyu Kim·Won-Young Choi·Seung-Kyu Chun*

  • Graduate School of Convergence Science, Seoul National University of Science & Technology, Seoul 01811, Korea

  • 재순환수 주입에 따른 매립장 함수율 변화특성 분석
  • 김영규·최원영·천승규*

  • 서울과학기술대학교 융합과학대학원

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Analysis of the change in water content and distribution was conducted according to the supply of recirculation water to a landfill. An excavation sample analysis showed that the recirculation water injection zone had water content 8.8% point higher than that of the non-injection zone, after 8 months of operation. And due to the influence of recirculation water supply by vertical wells in injection zones, the water content increases along with depth more clearly than non-injection zone. According to an electrical specific-resistivity survey after 13 months of operation, the water content got higher towards the bottom of the landfill. The water transmission coefficient is 8.72×10-4 cm/sec for injection zones and 3.36×10-5 cm/sec for the intermediate cover layer; analysis shows that the intermediate cover layer may affect the penetration velocity of water supplied by the horizontal injection tube. For the scientific design and operation of re-injection facilities, it was deemed necessary to follow-up research on the residence time and behavior of re-injection water considering the ratio of recirculation water supply in horizontal and vertical tubes, and pitcher coefficient of intermediate and waste layers.

Keywords: Bioreactor landfill, Leachate recirculation, Waste sampling, Electric resistivity, Hydraulic conductivity

This Article

  • 2021; 26(5): 39-48

    Published on Oct 31, 2021

  • 10.7857/JSGE.2021.26.5.039
  • Received on Sep 6, 2021
  • Revised on Sep 10, 2021
  • Accepted on Oct 6, 2021

Correspondence to

  • Seung-Kyu Chun
  • Graduate School of Convergence Science, Seoul National University of Science & Technology, Seoul 01811, Korea

  • E-mail: skchun@seoultech.ac.kr