NA-06 - Cleaning: Mechanical Methods

Miscellaneous methods

Chemical methods

Chemical methods are used to remove:

  • Incrustations or specific deposits

  • Root intrusion

The first application is generally restricted to industrial pipes and pipelines for oil and gas. For sewers, this method is only used in exceptional circumstances. A detailed example for the removal of encrustations in a water dam drainage system is described in [Siebe1981].

Preconditions for the application of the chemical method include:

  • chemical dissolvability of the deposit material
  • resistance of the available pipe materials and seals against the chemical agents
  • leak tightness of the lines.
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