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Fact Sheet: Heat Drying

Heat drying occurs when heat from direct or indirect dryers is used to evaporate water from wastewater solids. A major advantage of heat drying versus other biosolids improvement methods is that heat drying is ideal for producing Class A biosolids.

The biosolids technology fact sheet for heat drying provides:

  • A description of heat drying
  • Applicability to wastewater treatment plants
  • Advantages and disadvantages heat dryinig
  • Design criteria
  • Performance capabilities and data
  • Operation and maintenance information
  • Costs
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