Technologies Overview

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Alternative Treatment Technologies
Alternative waste treatment technologies transform waste into a valuable resource. This section illustrates the different treatment types that may be of benefit to a municipality or private entity managing waste products.

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Types of waste treatment options / processes

This guide describes 12 alternative waste treatment technologies. They vary in financial implication, required skills, sensitivity to waste composition and whether they have been successfully applied in South Africa or internationally. The table below gives some guidance around the suitability of different technologies in the short term, medium term and long term.

DURATION
TECHNOLOGY OPTIONS
INPUT MATERIALS
SHORT TERM

Proven technology in South Africa, comparatively low financial implications and skills requirements, and suitable to local waste composition.

Putrescible/organic waste and garden/food waste collections
Mixed dry recyclable material from domestic and commercial sources
Residual waste, commercial and industrial waste, construction and demolition waste
MEDIUM TERM

Proven technology in South Africa, comparatively low financial implications and skills requirements, and suitable to local waste composition.

Residual waste, commercial and industrial waste, certain fractions of construction and demolition waste and refuse derived fuel (RDF)
Putrescible/organic waste and garden/food waste collections
Municipal solid waste (MSW), commercial and industrial waste and wet type
LONG TERM

No track record of successful application, high financial implications and skills requirements, and high sensitivities to waste composition.

Municipal solid waste (MSW), commercial and industrial waste and wet type
RDF, treated residual waste, commercial and industrial waste or selected construction and demolition waste
MSW, commercial and industrial waste or selected construction and demolition waste and clinical/hazardous wastes
Types of treatments:

Alternative waste treatment technologies use one, or a combination, of the following processes:

  • Mechanical treatment
  • Biological treatment
  • Thermal treatment

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Volumes needed for technology options:

A waste treatment technology will usually be sensitive to both the nature and the amount of waste that requires treatment. These calculations should take into account waste reduction initiatives (and recycling – establishing a MRF should be an integral part to a waste treatment solution).
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