Flat Sheet
Membrane Series

The high flux Flat Sheet Membrane (FSM)

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LiqTech Flat Sheet Membrane

The high flux Flat Sheet Membrane (FSM) from LiqTech is designed for submerged outside-in filtration applications.

The FSM carrier and the selective layers are made of recrystallized silicon carbide which gives the product some unique advantages such as high flux, total chemical resistance (pH 0-14), and long lifetime.

The FSM is built into a submerged vacuum-driven filtration system, which consists of racks of modules each with multiple FSM's.

Market-proven
The second hardest material in the world next to diamonds
Made by filtration experts
Selected by market leaders
Highly flexible & stackable design

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Superior Flat Sheet Membrane

Features & Benefits

Unmatched flux
Small footprint
Excellent thermal properties
Unmatched performance
Chemically inert
Efficient cleaning
Robustness
Long service life - less maintenance
Lowest fouling tendency of any polymeric or ceramic membrane material

Our SiC Membrane Technology

Application Areas

Wastewater treatment
Wastewater reuse
Ground water
Drinking water
Pre-RO treatment
Others

Flat Sheet Membrane Filtration Principle Liqtech.Jpg

Flat Sheet Membrane Principle (Outside-In)

The filtration mode is outside-in and cleaning is done by a combination of air-scouring underneath the modules and by back washing along with chemical cleaning.

See Illustration - Outside-In Filtration Principle

FSM Datasheet

ELEMENT DATA
Configuration	Rectangular with permeate channels inside - Outside-in-filtration
Membrane material	Silicon Carbide (SiC)
Substrate material	Silicon Carbide (SiC)
Temperature tolerance	Up to 800°C / 1472°F
Maximum pressure	3 bar / 43.5 psi

APPLICATION DATA
Operating pressure	Depends on feed characteristics
Maximum operating temperature	Determined by system components
Maximum chlorine concentration	Unlimited
pH tolerance	0 - 14
Cleaning	Chlorine, acid, caustic, solvents

FLUX
Pore size	Typical flux at 25°C - Ultra pure water @ 1 bar
UF Membrane	> 3000 LMH / 1764 GFD

SPECIFICATION SHEET - FSM
Model	Element dimensions - A (mm/in) x B (mm/in) x C (mm/in)	Channel dimension (mm/in)	Membrane area (m²/ft²)
FSM500100UF-22	(mm) 100 ± 1.5 x 6 ± 1.0 x 500mm ±2.0	2 x 2mm	0.106 m²
	(inch) 3.9 ± .06 x .24 ± .04 x 19.7 inch ±.08	.08 x .08 inch	1.1 ft²

Bending tolerances on the concave side:

Side A: 1.0mm / .04 inch

Side B: N/A

Side C: 2.0mm / .08 inch

Highly Flexible & Stackable Rack Design

Highly flexible system with state-of-the-art silicon carbide flat sheet membranes.

Flat sheet systems are usually pressureless and submerged into a “feed” tank. It’s often a way to compress a large amount of membrane area in a small footprint. LiqTech’s FSM towers can be customized with different rack sizes and tower heights. Permeate is “sucked” out of the racks, aided by the water level in the tank. This means the membrane coating is on the outside of the sheets, and permeate is drawn in, and is an "outside-in" membrane design.

TECHNICAL DATA
Number of FSM membranes / racks	Up to 55 FSM per rack / Up to 12 racks
Membrane surface area	Up to 5.8 m²/62.4 ft² per rack - Up to 70 m²/753 ft² per tower
Tower / module material	316L / 1.4404 or super duplex
pH tolerance	0 - 14
Maximum operating temperature	Determined by system components
Operating pressure	Depends on feed characteristics

Want to know more about our Flat Sheet Membrane Series?

If you need more information, please do not hesitate to contact us.

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Contact Sales

- Kenneth Højrup Johansen
- VP Sales
- +45 2055 5217
- khj@liqtech.com
- LiqTech Ceramics A/S
- +45 4498 6000
- ceramics@liqtech.com
- https://liqtech.com/ceramics