NA-05 - Cleaning: Cleaning Nozzles

Practical recommendations

Odour problems (2)

The following measures can reduce the occurrence of odours:

  • Reduction of the pump pressure at the vehicle (resulting in a lower flushing pressure)

  • Choosing the appropriate cleaning nozzle (large jet angles, low number of nozzle inserts)

  • Reduction of the pullback velocity of the nozzle

  • Cleaning of preferably short sections from manhole to manhole

  • Regular removal of waste material within a section

  • Improvement of the aeration (air inlet and outlet), e.g. open manholes.

[Aigne2002]

 

 

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