What are the Types of Rotary Drum Screen

JX Filtration March 25, 2025 Rotary Drum Screen

Rotary Drum Microfilter
- Working Principle: Separates solids using a rotating drum-shaped filter screen, with water flowing from the inside out.
- Advantages:
  - High processing capacity (up to 5000 m³/h)
  - Low energy consumption (approximately 0.5–1 kW)
  - Suitable for large-scale aquaculture.
- Limitations: Requires regular backwashing and higher inlet water pressure (typically 0.1–0.3 MPa).
Rotary Disc Microfilter
- Working Principle: Multiple rotating filter discs alternately immerse in water, filtering solids based on pressure differentials.
- Advantages:
  - Compact structure with a small footprint
  - Ideal for land-constrained, factory-based aquaculture.
- Limitations: Lower processing capacity (usually < 200 m³/h) and filter susceptibility to fiber entanglement.
Disc Stack Microfilter
- Working Principle: Composed of multiple stacked circular filter plates with gaps that trap particles based on pressure differentials.
- Advantages:
  - High filtration precision (as fine as 20 μm)
  - Strong self-cleaning capability.
- Limitations: Higher energy consumption (2–5 kW) and requires a high-pressure backwash system.