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Self-cleaning Intake Strainers for Eel Screening

C J Hiscock

Published

Eel Screens and Eel Screening Intake Strainers

Rotorflush Self-cleaning Eel Screens and Eel Screening Intake Strainers are designed for use on the suction hose of surface mounted pumps. They can also be used as gravity fed intakes as long as a pump is used to supply the backwash.

We have developed a range of our award-winning self-cleaning suction intake filters to comply with Eel regulations.

These products allow low maintenance regulation compliant raw water abstraction.

The 2 mm mesh and low intake velocity protects elvers and eels, and the self-cleaning mechanism ensures that the mesh stays clear.

Our self-cleaning Eel Screening Intake Strainers have the added advantage that any downstream equipment – for example pumps, irrigators, wash water sprays, heat exchangers etc – also benefit from screened water, reducing the risk of blockage and clogging.

Designed for low intake velocities and with a high open mesh area, our eel screens deliver high flow rates while taking up less space than fixed installations such as band screens or wedge wire screens.

Find out more about Rotorflush Eel Screens  HERE.

Eel screen

Installing Rotorflush RF800LW Eel Screens at a Raw Water Intake

Eel Regulations

Regulations now in place for the Protection of European Eels now apply to most new or renewing abstraction licences for the use of raw water. Eel populations have crashed in recent years. Anyone pumping more than 20 m3 of water per day from rivers, lakes and reservoirs must ensure that measures are in place to protect eels and elvers.

The regulations for the protection of elvers and glass eels recommend screening of 2 mm or less at an intake velocity of 0.1 metre per second or less ahead for any raw water intake.

The UK Environment Agency requires 2 mm mesh or smaller for elver and glass eel screening. A greater intake velocity can entrap elvers. This intake velocity also meets North American EPA 316(b) cooling water intake requirements.

Little darlin’s

Self-cleaning Eel Screen Intake Strainers can be fitted with 1 – 6 mm mesh. Our patented and unique self-cleaning mechanism keeps the mesh free from debris whenever water is being drawn through the screen. Rotorflush filters have a low intake velocity by design.

The gentle backwash maintains a clear filter mesh. Elvers and glass eels are pushed away from the mesh before they can become trapped.

Eel

Father William balancing an Eel on the end of his nose

Confused by Eel Regulations? The EA requirements for Eel screening and the ways in which to meet them can be baffling.

Mesh size, intake speed, flow rates, distance from the sea, location and habitat can all play a part.  Our products can help with your compliance with the Environment Agency’s Eel Recovery Plan (Council Regulation No.1100/2007) and The Eel Regulations which now apply in England and Wales.

Rotorflush Filters Ltd are happy to advise – please call or email for more information about using Rotorflush filters for eel screening.

We’re here to help. Call us on +44(0) 1297 740125

 

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