Mechanical heat treatment

Mechanical heat treatment (MHT) is an alternative waste treatment technology. MHT involves a mechanical sorting or pre-processing stage with technology often found in a material recovery facility. The mechanical sorting stage is followed by a form of heat treatment. This might be in the form of a waste autoclave or processing stage to produce a refuse derived fuel pellet. MHT is sometimes grouped along with mechanical biological treatment. MHT does not however include a stage of biological degradation (anaerobic digestion or composting).

Configurations

Different MHT systems may be configured to meet various objectives with regard to the waste outputs from the process. The alternatives (depending on the system employed) may be one or more of the following :

• Separate an 'organic rich' component of the waste for subsequent biological processing

• Produce a segregated high calorific value waste (refuse derived fuel) to be appleid in an appropriate process to utilise its energy potential; and

• Extract materials for recycling (typically glass and metals, potentially plastics and the fibrous organic and paper fraction

See also

• Anaerobic digestion
• Composting
• List of solid waste treatment technologies
• Mechanical biological treatment
• Material recovery facility