Environmental Sanitation Engineering ›› 2024, Vol. 32 ›› Issue (3): 9-15.doi: 10.19841/j.cnki.hjwsgc.2024.03.002

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Methane Control Status and Comprehensive Utilization of Domestic Waste in Beijing

XIAO Yi, JIA Weijian   

  1. 1. Beijing Engineering Consulting Co. Ltd.; 2. Beizi Energy and Environmental Engineering Technology Co. Ltd.
  • Online:2024-07-02 Published:2024-07-02

Abstract: Methane emissions from domestic waste are one of the three major sources of methane emissions. In recent years, the amount of solid waste treatment from urban domestic waste in Beijing had grown rapidly, and it was expected that the amount of domestic waste removal and treatment would continue to operate at a high level in the coming years. It was particularly important to the control and comprehensive utilization of methane emissions. Based on the investigation of 10 domestic waste treatment facilities, included landfill sites, incineration plants, food waste and kitchen waste treatment plants, that produce and utilize methane within the Beijing area, the current utilization of methane was analyzed, and the problems in the production and utilization of methane in domestic waste were analyzed. The results indicated that the main processes for methane production in Beijing’s waste treatment were landfill gas and leachate treatment, included torch combustion and biogas power generation. Through using methane production prediction methods including LandGEM mathematical models, it was calculated that the theoretical methane production in the domestic waste field would accumulate to 2.363 billion cubic meters from 2023 to 2040. It was suggested that methane production should be controlled by source reduction, the anaerobic treatment scale of food waste and kitchen waste should be controlled based on the demand for aerobic composting. New technologies such as landfill gas emission reduction, optimal food waste and kitchen waste treatment, as well as methane reforming could be adopted to improve the utilization of methane in the domestic waste field, in order to achieve energy-saving and environmental protection effects.

Key words: domestic waste, methane, landfill gas, kitchen waste, comprehensive utilization

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