Study on H<sub>2</sub>S Gas Generation Characteristics in Simulated Landfill of Waste Gypsum Board

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  • Tameda Kazuo
    Faculty of Engineering, Fukuoka University
  • Lyu Hang
    Urban, Environment, Waste and Management Division, Eight-Japan Engineering Consultants Inc.
  • Xu Ziyang
    Global Environment Business Division, OYO Corpration
  • Yan Houlang
    Chemicals Business Division, Yosiura Contracting Co., Ltd.
  • Higuchi Sotaro
    Research Promotion Division, Fukuoka University

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Other Title
  • 廃石膏ボード模擬埋立による H<sub>2</sub>S ガス発生特性に関する研究

Abstract

In recent years, the amount of waste gypsum board disposed of in managed landfill sites has been increasing, and the generation of H2S gas from waste gypsum board has become a problem even in this kind of landfill site.<br>　As a countermeasure against H2S gas generation, we confirmed the effect of ventilation that makes a tank aerobic in our previous studies, but we had not investigated the effect of layer thickness. Moreover, it is difficult to sustain ventilation during and after disposal in landfill because of the cost. Therefore, we investigated whether it is possible to reduce the concentration of H2S by reducing the concentration of organic matter sources by improving the washout function through ventilation and the limitation of layer thickness. As a result, we confirmed that the landfill tank layer could be improved to an aerobic state by setting the layer thickness to about 1 m. However, even if the concentration of the organic matter source is low as a factor in H2S gas generation, generation will continue when the tank is anaerobic, and a certain concentration of sulfate remains.

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