Rake Bar Screen / Coarse Screening
Introduction
The Rake Bar Screen from Purecreek Environmental Services is designed for coarse mechanical pretreatment of wastewater. It removes large solids such as plastics, rags, and branches, preventing clogging and protecting downstream equipment like pumps, membranes, and biological treatment units.
Applications
- Municipal wastewater headworks and pumping stations
- Industrial wastewater pretreatment (food processing, paper & pulp, textile, petrochemical)
- Stormwater and combined sewer overflow systems
- Protection of downstream fine screens, membranes, and treatment processes
How It Works
The bar screen consists of a series of vertical or inclined bars with defined spacing. Wastewater flows through the bars, while larger debris is retained on the surface. An automatic rake mechanism periodically cleans the bars by lifting and removing the captured solids, which are discharged into a container or conveyor for disposal.
Models & Options
- Bar Spacing: customizable (6–50 mm depending on application)
- Configurations: channel-mounted or tank-installed
- Drive Systems: chain-driven, cable-driven, or hydraulic rakes
- Materials: Stainless steel AISI 304 / 316 for durability, with optional protective coatings
- Sizes: designed for small pumping stations up to large municipal treatment plants
Technical Specifications (example values, customizable)
|
Parameter |
Value / Options |
|
Flow capacity |
up to 5000 m³/h (depending on width) |
|
Bar spacing |
6–50 mm (custom) |
|
Screen width |
300–3000 mm |
|
Inclination angle |
60°–75° (standard) |
|
Drive power |
0.5–5 kW |
|
Material of construction |
Stainless steel 304 / 316 |
Key Benefits
- Effective removal of coarse solids (plastics, rags, wood, bottles)
- Automatic cleaning system reduces manual labor and increases reliability
- Prevents clogging and reduces wear on pumps and downstream units
- Durable stainless steel design for long-term operation
- Customizable sizes and bar spacing to match plant requirements
Compliance
Purecreek bar screen rakes are developed in cooperation with SEFT Group and manufactured to comply with Canadian CSA/UL/ETL standards for wastewater treatment equipment.
Case Reference
In a municipal wastewater treatment plant, installation of a bar screen rake reduced manual cleaning time by over 80%, improving plant reliability and lowering operational costs.
Maintenance & Operation
- Automatic raking reduces manual intervention
- Replaceable bars and wear parts for long service life
- Easy access for inspection and maintenance
- Safety guards to protect operators
Call to Action
👉 Contact Purecreek Environmental Services for datasheets, custom design options, or a quotation for bar screen rake systems tailored to your wastewater treatment project.
