Water Management Systems

CWF Storm Flush™

Hydrok CWF Storm Flush

The Hydrok CWF Storm Flush storm tank cleansing system provides a cost effective solution for the removal of sedimentation by the use of automatic, self regulated flushing technology.

The CWF Storm Flush system is a highly effective non-powered cleaning system for all storm water retention tanks utilising the sewage storm water for the flushing process thus requiring no additional fresh water.

Operating Principle

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The CWF Storm Flush is a simple method for sediment removal. Storm water is held in reserve in the storage reservoir, filled during the tank filling process. At the end of a storm event and after the system has emptied, the retained flushing water is released via the vacuum break within the flushing vessel. This creates a RFP (Roughing, Fine and Polishing) staged flushing regime which mixes and carries the sediment from the base of the tank to the receiving sump.

Advantages and Benefits

  • Cleans ecologically, without external power, without external water supply and without controls
  • Flushes even after partial fillings
  • Fully self priming and flushing operation
  • Suitable for new tank and existing tank retrofit
  • Suitable for both open and below ground installations
  • No moving parts
  • Intrinsically safe
  • Any shape tank
  • Utilises storm water for the flushing process
  • Retains total volume of storm tank
  • Final flush polishing stage utilizes settled storm water
  • Synchronised flushing of multi unit installations within larger tanks
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