Center-Flow Band Screen
The XLN-type center-flow band screen is a continuous fine screening device for solid-liquid separation in wastewater headworks treatment. As part of municipal and industrial wastewater equipment, it removes hair, fibers, flaky debris, and other small floating solids before they reach downstream treatment equipment.
The screen consists of a main frame, rotating perforated panels, a chain drive mechanism, a screenings discharge trough, a backwash system, and a control system. Wastewater enters at the center and flows from the inside out through the screen panels on both sides for dual-side filtration. Captured solids ride the panels to the top, are then rinsed off, and discharged into the screenings trough. The cleaned panels then return to the filtration zone for continuous solid-liquid separation.
| Model | |
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| Screen Width (mm) | 1,000 | 1,200 | 1,400 | 1,600 |
| Channel Width B (mm) | ≥1,200 | ≥1,200 | ≥1,200 | ≥1,200 |
| Channel Depth H (m) | 1.0–5.0 | 1.0–5.0 | 1.0–5.0 | 1.0–5.0 |
| Perforation Diameter Ø (mm) | Ø2, Ø3, Ø4, Ø6 | Ø2, Ø3, Ø4, Ø6 | Ø2, Ø3, Ø4, Ø6 | Ø2, Ø3, Ø4, Ø6 |
| Separation Efficiency (%) | 81–97 | 81–97 | 81–97 | 81–97 |
| Velocity Through Screen (m/s) | < 0.6 | < 0.6 | < 0.6 | < 0.6 |
| Allowable Water Level Differential (mm) | 200 | 200 | 200 | 200 |
| Motor Power (kW) | 0.55–2.2 | 0.55–2.2 | 0.55–2.2 | 0.55–2.2 |
| Wash Water Pressure (MPa) | ≥0.4 | ≥0.4 | ≥0.4 | ≥0.4 |
- Center-flow, dual-side filtration for a larger effective screening area
- Perforated screen panels in Ø2, Ø3, Ø4, Ø6 mm to suit different influent conditions and fine screening requirements
- Rotary cleaning brush and backwash system that remove fibers, hair, and other debris from the screen surface and reduce clogging
- Vertical configuration for channels and wastewater treatment facilities with limited installation space
- Fully automatic control by timer or differential water level