Plate Membranes

Ceramic plate membranes

Ceramic plate membrane modules are used to treat water and waste water streams of moderate solid and oil concents, e.g. oily wastewater and surface water. SiC plate membranes are packed in racks that are stackable (max. 15 units). It has similar material properties like the SiC Tubular Membrane including high durability, chemical stability and high flux.

The ceramic membrane plates are enclosed within a durable housing. The flash-sheet membranes are operated in a dead-end outside-in filtration mode. During filtration the membrane stacks are submerged in the process water. By applying a suction pressure from the indside of the flash-sheet membrane water flows through the pores while suspended particles and impurities are retained on the surface.This design ensures efficient separation of solids and liquids consuming only a small amount of electric energy.

Please click here for more details on our plate membranes.

Bollfilter plate membranes stacked in the filter module.

How do plate membranes work?

While tubular membranes utilize a Crossflow-Filtration principle solution, plate membranes operate based on the Dead-End-Filtration principle. By applying a suction pressure from the inside of the flat-sheet membrane water flows through the pores forming the clean permeate while suspended particles and impurities are retained on the surface As there is no tangential flow across the membrane surface, particles which cannot pass the membrane will accumulate within the liquid solid boundary layer. This filter cake buildup is managed by different processes including air sparging and back washing of the membranes.

Strenght: simple filtration method, low energy consumption, easily implementable in existing systems

Features and Benefits

Unmatched flux

Small footprint

Easy retrofit in existing tank systems

Unmatched performance

Chemically innert

Efficient cleaning

Robustness

Long service life - less maintenance

Specifications BOLL plate membranes

Bollfilter flat membranes in filter module from above. — BOLLFILTER flat membranes in filter module from above.

Material Properties:	Similar to SiC Tubular Membranes
Membrane Structure:	SiC Plate Membranes, stackable (max. 15)
Filtration Direction:	Outside-in
Operating Pressure:	Very low pressure (0.1 – 0.7 bar suction)
Operating pH Range	pH 1 – 12
Temperature Resistance	High, up to 60°C (140°F)

Would you like to contact us?

Michael Hormes Director Business Unit Fine Filtration Technology

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