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

Korean Geo-Environmental Society (한국지반환경공학회)
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A Study on the Acid Drainage Neutralizing System for Ecological Vegetation on the Acid Drainage Slope

산성배수 비탈면의 생태적 녹화를 위한 산성배수 중화기법 연구

  • Cho, Sung Rok (Environmental Landscape Architecture, Cheongju University) ;
  • Shim, Sang Ryul (Environmental Landscape Architecture, Cheongju University) ;
  • Kim, Jae Hwan (Environmental Landscape Architecture, Cheongju University)
  • Received : 2018.10.12
  • Accepted : 2018.12.17
  • Published : 2019.01.01
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Abstract

Research was initiated to find out acid drainage neutralizing techniques for ecological vegetative growth on the acid drainage slope. Four different acid drainage neutralizing techniques [no treatment, limestone layer treatment, phosphate treatment, and limestone layer + phosphate treatment] were treated on the acid drainage slope. There was a significant difference observed in treated acid neutralizing techniques for acidity, surface coverage rate, death rate and plant root status. Treated acid neutralizing techniques were effective for neutralizing acidity and vegetative growth in order of [first: limestone layer + phosphate treatment, second: phosphate treatment, third: limestone layer treatment and fourth: no treatment]. The limestone layer and the phosphate treatments were effective for neutralizing acidity and vegetative growth, respectively. However, the phosphate treatment was more effective compared to the limestone layer treatment on the acid drainage slope. We figured out that the phosphate treatment is more effective for neutralizing acidity and vegetative growth because of coating effect of sulfides.

산성배수가 발생하는 비탈면에서 생태적 녹화를 위한 산성배수 중화기법을 알아보기 위한 연구를 진행하였다. 산성배수중화기법을 위한 4가지 유형의(무처리, 석회고토 처리, 인산염 처리, 석회고토 + 인산염 처리) 시험구를 조성하였다. 실험결과 산도(pH), 피복율(%), 고사율(%), 식물뿌리상태 등에서 중화기법에 따른 유의차가 발생하는 것을 알 수 있었다. 중화기법에 따른 연구결과 (첫 번째 : 석회고토 + 인산염 처리, 두 번째 : 인산염 처리, 세 번째 : 석회고토 처리, 네 번째 : 무처리) 순서로 산도 중화 및 식물생장에 효과적이었다. 산성배수 비탈면에서 석회고토 처리와 인산염 처리는 토양산도 중화와 식물생장에 효과적이었으나, 석회고토 처리에 비해 인산염 처리가 더 효과적이었으며, 인산염 처리가 황화광물의 코팅 효과 때문에 토양산도 중화와 식물 생장에 더 효과적이라는 것을 알 수 있었다.

Keywords

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Fig. 1. Four different acid drainage neutralizing systems

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Fig. 2. Acidity (pH) affected by four different acid drainage neutralizing systems

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Fig. 3. Plant root status affected by four different acid drainage neutralizing systems (23 July, 2018).

Table 1. Plant germination rate and seeding amount of used in this experiment

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Table 2. Vegetation coverage rate affected by four different acid drainage neutralizing systems (%)

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Table 3. Death rate affected by four different acid drainage neutralizing systems (%)

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