Flat sheet and hollow fiber membranes both retain biomass in MBR systems. The choice affects tank layout, packing density, access, aeration, cleaning and replacement strategy.
Configuration and packing density
Hollow fiber bundles often provide higher membrane area per tank volume. Flat sheet cassettes may use more space but can provide direct plate-based access.
Fouling and cleaning
Fouling depends on sludge, screening, aeration and flux. Hollow fiber systems may use relaxation or backwash where designed; flat sheet strategies vary by product and system.
Integrity and maintenance
Fiber integrity testing and repair approach should be understood. Flat sheet plate condition, seals, manifolds and cassette access also require a maintenance plan.
Replacement decisions
Do not compare area alone. Check frame, header, connections, aeration, hydraulic mode, cleaning and controls before proposing a replacement.
Information to send YiFu
- Current module brand and model
- Photos and dimensional drawings
- Installed area and tank size
- Flux, TMP and cleaning history
- Problems motivating replacement