Design Philosophy

Aqueous Italia hybrid flat sheet membranes feature a corrugated, edge-potted construction, intentionally engineered to merge the hydraulic efficiency of hollow fibre membranes with the mechanical robustness and serviceability of flat sheet formats. The corrugated geometry is not cosmetic—it is a functional hydraulic structure designed to improve flux stability, fouling resistance, and mechanical integrity under submerged MBR operating conditions.

With long operational life, low maintenance requirements, and superior contaminant removal, Aqueous Italy’s tubular membranes provide a reliable, cost-effective solution for municipalities and industries seeking sustainable water reuse, safe discharge, and dependable filtration performance.

Corrugated Strength

Reinforced corrugated structure enhances stiffness and durability, preventing membrane deformation during intense aeration and long-term operation.

Higher Filtration Area

Increased effective surface area per panel enables higher flux, improved productivity, and better packing efficiency compared to conventional flat sheets.

Enhanced Mechanical Strength

Corrugated structure improves out-of-plane stiffness
Reduces membrane flutter and deformation during aeration
Edge potting distributes loads to frame
Handles higher air scouring without fatigue or tearing

Higher Effective Filtration Area

Greater true membrane surface vs flat sheets
Higher sustainable flux at similar TMP
Better productivity per module
No fibre crowding limitations of hollow fibre systems

Superior Hydrodynamics & Fouling Control

Corrugation creates localized turbulence
Disrupts cake layer formation
Reduces concentration polarization
Uniform scouring with no dead zones or shielding

Aqueous Hybrid Corrugated Flat Sheet Membranes combine the structural strength of ceramic technology with advanced hydrodynamic design to deliver superior filtration performance. Compared to conventional flat sheet and hollow fibre membranes, the hybrid architecture provides higher durability, improved fouling resistance, and more stable long-term flux.

The engineered corrugated profile increases effective membrane surface area while enhancing turbulence during aeration, ensuring uniform scouring and reduced clogging. This results in lower energy consumption, fewer cleaning cycles, and significantly extended membrane life.

✔ Higher surface area and sustainable flux
✔ Stronger structure with reduced membrane fatigue
✔ Better fouling control and easier cleaning
✔ Lower operating and maintenance costs
✔ Longer service life than polymeric or hollow fibre systems

Membrane Microstructure & Filtration Mechanism

At the microscopic level, Aqueous Italia’s hybrid corrugated flat sheet membranes are engineered with a highly uniform and interconnected porous matrix. This advanced structure enables stable ultrafiltration performance in submerged systems while maintaining high flux, low fouling, and consistent particle rejection even under demanding operating conditions.

The optimized pore architecture ensures that filtration occurs primarily at the surface and near-surface layers, preventing deep pore penetration and minimizing irreversible fouling. Combined with permanent hydrophilicity, the membrane naturally repels oils, organics, and sludge, allowing only clean water to pass through efficiently.

Uniform Pore Distribution

Narrow and consistent pore sizes ensure reliable particle rejection and stable permeate quality.

Interconnected Porous Network

Fully open pore pathways promote smooth water flow while reducing internal blockage and resistance.

Surface Filtration Mechanism

Near-surface filtration minimizes deep fouling, enabling easier cleaning and longer membrane life.

Permanent Hydrophilic Chemistry

Low surface energy reduces organic adhesion and sludge buildup for improved anti-fouling performance.

Micro-Scale Flow Acceleration

Corrugation peaks and valleys accelerate local flow, creating shear gradients that disrupt foulant attachment.

Dynamic Pressure Fields

Alternating pressure and velocity zones prevent cake layer compaction and maintain higher permeability.

Uniform Aeration Exposure

Flat corrugated surfaces ensure even scouring across the membrane, eliminating dead zones and uneven fouling.

Corrugation Effect at Micro-Scale

Beyond improving macro-hydraulics, the engineered corrugated geometry actively enhances filtration performance at the microscopic level. The structured surface modifies local flow behaviour across the membrane, increasing shear forces and reducing the likelihood of foulant deposition and pore blockage.

This dynamic hydrodynamic environment continuously disturbs sludge and cake layer formation, enabling longer operating cycles, stable flux, and lower cleaning frequency. Unlike hollow fibre systems where shielding and stagnation can occur, the open flat corrugated design ensures every membrane surface receives uniform aeration and effective scouring.

The result is sustained permeability, improved energy efficiency, and significantly reduced fouling during long-term submerged operation.

Aqueous FS HY Series.

Aqueous Hybrid Corrugated Flat Sheet Membranes

Reinforced corrugated structure enhances stiffness and durability.

Download Datasheet

Corrugated Hybrid Flat Sheet Membrane