Abstract
AbstractThe addition of air to landfilled municipal solid waste (MSW) was examined at an operating bioreactor landfill in Florida. An air-addition system was designed to provide sufficient capacity to aerobically degrade a targeted mass of waste in a 3-year period. Approximately 1.385 million standard m3 [at 15.5°C and 101.3 kPa (1 atm)] of air in total was added to 78 small-diameter vertical wells located in clusters of three different depths (6, 12, and 18 m deep in the landfill). The cumulative volume of air added was much less than design capacity, a result of difficulties in adding air to deeper and wetter landfill areas and rapid temperature increases in waste near some of the wells. Consistent long-term aerobic conditions could never be established. Gas concentration measurements throughout the experiments were not in the explosive range, but temperature measurements corresponding to continuous air addition did require frequent adjustment and cessation of air addition to wells to avoid fire formati...
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