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Closeup of the Rotostrainer Externally Fed Rotary Screen

Introduced over 40 years ago, the Hycor® Rotostrainer® screen is the original self-cleaning wedgewire screen. With thousands of installations, it is a proven fine screening technology for municipal wastewater treatment plants and many industries with several application capabilities.

In wastewater treatment plants, the Hycor Rotostrainer is renowned as an externally-fed rotary screen for pretreatment. It is also the industry choice for scum screening. Industrial users, such as meat processors, food processors, tanneries, textile mills, petrochemical plants, and recyclers, rely on it for product recovery and wastewater treatment.

How the Hycor Rotostrainer Works

The screen is externally fed so that influent is directed under a baffle, then upward and over the length of the cylinder. The natural action of wastewater cascading through the screen creates a powerful backwash, which results in a continuously clean surface. Solids are caught on the outside of the screen surface and are removed by a tensioned doctor blade.

Opening sizes are available from 0.010" (.250 mm) to 0.100" (2.54 mm). Capacities range from 60 GPM (13.6 M3/H) to 7800 GPM (1771 M3/H) in a single unit. Additional models are available to handle higher capacities.

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Features & Benefits

Reduced Maintenance

Self-cleaning wedgewire drum screen
with doctor blade works 24/7 to reduce operator attention

Reduced Maintenance

Counter weighted primary doctor blade
needs no adjustments and reduces maintenance 

Reduced Maintenance

Automatic Doctor Blade Cleaner (ADBC)
cleans primary doctor blade

Improved function

Stainless steel construction
improves screen life and durability 

Improved function

Internal backwashing spray
keeps screen clean for high performance

Provide various options

Multiple unit models
provide variety for any application

Water drop with leaves

Proven design
with over 1000 installations since early 1970’s

Improved function

Internal water spray
keeps screen clean from blinding solids and FOG


Closeup of the Rotostrainer Externally Fed Rotary Screen
Side view of the Rotostrainer Externally Fed Rotary Screen
: Front view of the Hycor Rotostrainer Externally Fed Rotary Screen
Closeup of the Rotostrainer Externally Fed Screen media
Hycor Rotostrainer Externally Fed Rotary Screen
Multiple Rotostrainer Externally Fed Rotary Screen

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