Landfill Gas Detection in Leachate Pipe: A Consideration for Design Improvement of Leachate Piping and Gas Venting Systems

Abstract:

Landfill provides simple and economic means of solid waste disposal. However, it causes negative effects to the environment due to leachate generation and greenhouse gas emissions. Current trends in landfill design allow aerobic or semi aerobic processes to take place inside the landfill to speed up degradation process and reduce odour. In Malaysia, the semi aerobic system of landfill design is adopted. This paper presents the study of the gas venting system and leachate quality of the semi aerobic landfill. The gas samples were collected from the end of the leachate pipe and the gas vent of a sanitary landfill by the water displacement method. Raw leachate samples from the landfill leachate ponds were collected and the COD of the samples were measured. The concentration of methane gas escaping from the leachate pipe was found to be around 13%. The COD content of the raw leachate was found to be more than 15000 mg/l. The improvement of landfill gas collection in Malaysia is recommended.

• Periodical: Applied Mechanics and Materials (Volume 699)
• Pages: 607-612
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.699.607
• Online since: November 2014
• Authors: Mohd Amir Zaid bin Ghazali, Nasiman bin Sapari, Emmanuel Olisa*, Hisyam Jusoh
• Keywords: Gas Vent, Leachate, Leachate Pipe, Methane Gas, Sanitary Landfill, Semi Aerobic

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