ELIQUO HYDROK's CWF Storm Flush® tank cleansing system, also called a Flushing Bell, is a cost-effective solution for the removal of sedimentation from stormwater storage tanks using an automatic, self-regulated flushing technology.

The non-powered cleaning system can be used on all stormwater retention tanks. It utilises sewage stormwater for the flushing process, and does not require additional fresh water.

Operating principle

CWF Storm Flush is a simple method for sediment removal. Stormwater 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 that mixes and carries the sediment from the base of the tank to the receiving sump.

Construction

Made from stainless steel with no moving parts within the storm tank. All necessary valve arrangements are built into a control manifold located in a small manhole chamber at ground level.

Benefits

  • Cleans ecologically, without external power, external water supply and controls.

  • Flushes even after partial fillings.

  • Fully self-priming and flushing operation.

  • Suitable for new tank and existing tank retrofit.

  • Suitable for open and below ground installations.

  • No moving parts.

  • Intrinsically safe.

  • Any shape tank.

  • Utilises stormwater for the flushing process.

  • Retains total volume of storm tank.

  • Final flush polishing stage utilises settled stormwater.

  • Synchronised flushing of multi unit installations within larger tanks.