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In anaerobic digestion, methane and carbon dioxide are released as
special bacteria convert the organic material into safe
biosolids. The bacteria can exist only in a non-air
environment, and work more quickly at elevated temperatures, so
a floating cover keeps the temperature stable, contains
odors, and traps gasses, which are normally 50 to 75 per cent
methane. The methane is sometimes burned off, or in an
increasing number of cases, collected and used to power the
facility or sold to utility companies for resale. MPC designs,
fabricates, and installs floating covers for farms, food
processing plants, paper mills, and other facilities producing
organic waste worldwide.
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