Abstract
The Sudokwon landfill site in Korea, is one of the largest landfill sites in the world, and consists of a first landfill site and second landfill site. The second landfill site generates 3–30 times more H2S than that of the first landfill site. However, the cause of the increase in H2S has not been identified. In this study, the main causes of H2S concentration increase were investigated in the second landfill site in the Sudokwon landfill site. We classified wastes at the Sudokwon landfill site into seven types including Construction and demolition (C&D) debris waste. A lysimeter reactor was designed as a similar environment to the Sudokwon landfill site for simulation. In addition, the experiment was conducted under the same conditions. Three components and elements were analyzed to identify the composition of waste in the landfill site. Leachate was analyzed through a chemical oxygen demand and SO42− standard method. For landfill gas, a gas analyzer was used. The trend in the generation of leachate and landfill gas depending on waste composition at the landfill site was observed and the cause of the increase in H2S was examined. As a result, landfilling of C&D debris waste is recommended as a single landfill.
Highlights
Waste is generated from various sources including construction, commerce, industrial, domestic, mining, and agriculture
This study examined the characteristics of the generation of landfill gas when Construction and demolition (C&D) debris waste and other wastes were mixed landfilled and estimated to contain the most SO4 2−
This study conducted an experiment to determine the generation of landfill gases using a lysimeter to examine the odor problem from the second landfill site at the Sudokwon landfill site
Summary
Waste is generated from various sources including construction, commerce, industrial, domestic, mining, and agriculture. Construction and demolition waste are on the increase around the world because of urbanisation. Construction and demolition waste accounts for 44% of total waste in Britain [1], 29% in the USA [2], 44% in Australia, and 27% in Canada. Construction and demolition (C&D) debris waste depend on landfills.
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