Brackett Green® Double And Single Entry Drum Screen

High capacity fine screening of raw or waste water coupled with low maintenance operation

Over the last century a large variety of fine screen types and flow patterns have been developed for both raw water intakes and for preliminary treatment of municipal waste water. Each has one or more limitations in terms of capacity, process performance, reliability, maintenance requirements, and capital cost. However, Ovivo's range of drum screens offers a superior performance in all of these key areas and this makes drum screens particularly suited to applications that demand the highest level of process performance combined with superior reliability and very low maintenance requirements.

Ovivo can offer either the Double Entry (DE) flow pattern, used primarily for larger flows typically ranging from 8 to 35 m3/sec or the Single Entry (SE) flow pattern which offers all the advantages of the DE drum screen in a format more suited to flows of less than approximately 10 m3/sec, depending on the specific application. Ovivo's SE and DE drum screens both use an in-to-out flow pattern that eliminates the possibility of material larger than the media aperture bypassing the screen or being carried-over to the clean side, making them ideal for the protection of debris sensitive processes such as MBR's or condensers.

Key features & benefits

• In-to-out flow pattern eliminates screen bypassing
• High debris handling capacities
• Can operate with high headloss without tripping
• Option of a Fish Recovery and Return system
• High unit flows, minimizing the number of intake channels required
• Produces downward loads eliminating risk of screen floatation
• Suitable for nuclear power plant safety cooling water
• Available in Single Entry (SE) and Double Entry (DE) flow patterns
• SE drum screens provide all the benefits of DE for lower flow applications
• Patented ProPaPanel® technology for wastewater applications prevents hair pinning

How we create value

• Highly reliable with low maintenance requirements
• Expert knowledge and extensive experience ensures optimal plant selection and sizing
• Robust, cost-effective design
• Effectively cleaned by low pressure backwashing, minimizing energy costs
• Consistent screening