FAQs: Rotary Brush Screen

Or-Tec Rotary Brush Screen for MBR, Municipal & Industrial Wastewater Screening

The Or-Tec Rotary Brush Screen is a mechanical fine screen designed for membrane bioreactors (MBR), municipal wastewater treatment plant (WWTP) headworks, food processing facilities, and industrial wastewater applications. It uses a static perforated stainless steel semi-cylindrical screen bed that is continuously cleaned by rotating stainless steel brush arms. The gentle brushing action removes fibers, hair, and other debris without applying pressure to the screen surface, helping minimize wear while maintaining reliable screening performance. An integrated compactor is available for applications requiring screening compaction.

• Mechanical fine screening system: The Or-Tec Rotary Brush Screen is a mechanical fine screen designed to remove fibers, hair, and other suspended solids from municipal and industrial wastewater.
• Ideal for wastewater treatment applications: It is commonly installed in membrane bioreactors (MBR) and wastewater treatment plant headworks where reliable fine screening is required.
• Continuous self-cleaning operation: The system uses a static perforated stainless steel screen that is continuously cleaned by rotating brush assemblies for dependable operation.

• Gentle screen cleaning: The Or-Tec Rotary Brush Screen uses rotating brush assemblies that gently sweep the static perforated stainless steel screen without applying pressure to the screen surface.
• Designed for long service life: Because the brushes clean rather than scrape the screen, the design helps reduce screen distortion and wear compared to more aggressive cleaning methods.
• Low-maintenance operation: The adjustable brush system provides dependable cleaning performance while helping extend equipment life in municipal and industrial wastewater applications.

• Reliable MBR pretreatment: The Or-Tec Rotary Brush Screen provides fine screening with screen openings starting at 1 mm, helping remove fibers, hair, and other suspended solids before they reach downstream membrane systems.
• Continuous screen cleaning: Rotating stainless steel brush arms continuously clean the screen surface to help maintain consistent screening performance while preventing material buildup.
• Protects downstream equipment: Removing troublesome solids before they reach the membranes helps support reliable MBR operation and overall wastewater treatment performance.

Feature	Specification
Screen Type	Rotary Brush Mechanical Fine Screen
Screen Openings	1 mm and larger
Construction	Stainless Steel
Cleaning Method	Rotating stainless steel brush arm
Screen Design	Static perforated semi-cylindrical screen
Brush Adjustment	Approximately 1 inch
Hydraulic Components	None
Automatic Operation	Auto start, run, and shutdown
Integrated Compactor	Optional
Tank Mounting	Optional open-bottom configuration
Primary Applications	MBR, WWTP Headworks, Food Processing, Industrial Wastewater

• Designed for fine solids removal: The Or-Tec Rotary Brush Screen is designed to remove fibers, hair, and other suspended solids from municipal and industrial wastewater using a static perforated stainless steel screen.
• Automatic, continuous operation: Rotating stainless steel brush arms continuously clean the screen while a stainless steel scraper blade automatically removes collected screenings from the machine.
• Versatile wastewater applications: The Rotary Brush Screen is commonly used in membrane bioreactors (MBR), municipal wastewater treatment plant headworks, food processing facilities, and industrial wastewater treatment systems where reliable fine screening is required.

• Fine screening process: Wastewater flows across a static stainless steel perforated semi-cylindrical screen bed where solids are retained on the screen surface.
• Continuous brush cleaning: Rotating stainless steel brush arms continuously sweep the screen to remove accumulated debris without forcing material into the screen openings.
• Automatic screenings discharge: A stainless steel scraper blade cleans the brushes and discharges the collected screenings outside the machine.

• The Or-Tec Rotary Brush Screen provides fine screening with screen openings starting at 1 mm, making it well suited for protecting downstream membrane systems.
• Continuous brush cleaning helps maintain open screen perforations while removing fibers, hair, and other materials that can interfere with membrane performance.
• Its simple mechanical design and automatic operation make it an effective pretreatment solution for MBR systems.

• Yes. The Or-Tec Rotary Brush Screen is designed so the brushes gently sweep the screen surface without applying pressure to the perforated screen bed.
• Because the brushes clean rather than scrape the screen, the design helps reduce screen distortion and wear that can occur with more aggressive cleaning methods.
• The brushes also provide approximately 1 inch of adjustment, allowing long service life even in abrasive wastewater applications.

• The Or-Tec Rotary Brush Screen is available with screen perforation sizes starting at 1 mm.
• Wedgewire screen configurations can also be supplied for applications requiring alternative screening characteristics.
• The appropriate screen opening depends on the wastewater being treated and the required solids removal performance.

• No. The Or-Tec Rotary Brush Screen operates without hydraulic components.
• The system features automatic start, operation, and shutdown, making it simple to operate while minimizing routine maintenance requirements.
• Stainless steel construction further contributes to long-term durability in wastewater environments.

The Or-Tec Rotary Brush Screen is designed for municipal and industrial wastewater treatment where affordable and efficient fine screening is required.

Typical applications include:

• Membrane Bioreactors (MBR)
• Municipal WWTP Headworks
• Food Processing & Packaging
• Paper Mills
• Industrial Manufacturing

The screen is intended to remove fibers, hair, and other suspended solids before downstream treatment processes.

The Rotary Brush Screen can be supplied with several options to match specific installation requirements, including:

• Integrated Compactor
• Platforms and Walkways
• Endless Bags >Heat Tracing
• Hoppers or Filtrate Tanks
• Liquid Level Sensors
• Control Panels
• Explosion-Proof Construction (Class 1, Division 1)
• Optional Support Stand
• Optional Open-Bottom Tank Mounting Configuration

Model	1 mm Screen	2 mm Screen
ODS 2	40 GPM	60 GPM
ODS 4	80 GPM	130 GPM
ODS 8	150 GPM	260 GPM
ODS 12	230 GPM	410 GPM
ODS 16	310 GPM	550 GPM
ODS 24	400 GPM	700 GPM
ODS 30	1,100 GPM	1,700 GPM
ODS 60	2,100 GPM	3,500 GPM

Influent Type	Derate Factor
Typical Municipal Flow (200-500 mg/L)	1.00
Municipal Flow with Stormwater	1.30
Food & Beverage Processing	0.70
Tannery or Textile	0.60
Slaughterhouse	0.50

Listed peak flows are for reference only. Contact Or-Tec for specific application capacities.

• Municipal wastewater treatment plants
• Membrane bioreactor (MBR) systems
• Municipal headworks
• Food processing facilities
• Food packaging plants
• Paper mills
• Industrial manufacturing
• OEM wastewater treatment systems

Capability	Or-Tec Rotary Brush Screen
Mechanical Fine Screening	Yes
MBR Pretreatment	Yes
Municipal WWTP Headworks	Yes
Industrial Wastewater	Yes
Food Processing Wastewater	Yes
Screen Openings Starting at 1 mm	Yes
Static Perforated Screen	Yes
Continuous Brush Cleaning	Yes
Gentle, Low-Wear Cleaning Action	Yes
Stainless Steel Construction	Yes
Automatic Start, Run & Shutdown	Yes
No Hydraulic Components	Yes
Optional Integrated Compactor	Yes
Optional Wedgewire Screen	Yes

• The Or-Tec Rotary Brush Screen combines affordable fine screening, automatic operation, and durable stainless steel construction in a simple mechanical design.
• Its continuous rotary brush cleaning system removes fibers, hair, and suspended solids while minimizing screen wear through gentle cleaning action.
• With screen openings starting at 1 mm, optional wedgewire screens, automatic operation, and multiple configuration options, the Or-Tec Rotary Brush Screen provides dependable screening for MBR systems, municipal wastewater treatment plants, food processing facilities, and industrial wastewater applications.