Product Description
A flat sheet membrane is a planar, sheet-like structure used in membrane separation processes. These membranes are characterized by their flat, rectangular shape and are often used in lab and pilot-scale testing to evaluate their performance. They can also be used in larger industrial settings, sometimes arranged in modules to enhance efficiency.

Flat sheet membrane normally includes
- reverse osmosis membrane sheet,
- nanofiltration membrane sheet
- SWRO membrane flat sheet.
Reverse osmosis membrane flat sheet we mainly focus on its quality and not as purpose to compete in markets lower price, and also, we have our advantages on rolling skills and lower cost, so can directly talk by specific requirements.
Key characteristics
Some key Knowledge
Planar Structure:
Flat sheet membranes have a flat, sheet-like configuration, unlike hollow fiber membranes which are tubular.
01
Versatile/ Usage:
They can be used in a wide range of filtration applications, including reverse osmosis, nanofiltration, ultrafiltration, and microfiltration.
02
Substrate:
They usually have a support layer (substrate) for structural integrity, which normally is porous
03
Industrial Applications:
They can be used in various industrial processes, such as water treatment, food and beverage processing, and pharmaceutical production, often in plate-and-frame or other module configurations.
04
Advantages:
high capacity fabricate: Flat sheet membranes are difficult to manufacture with high quality if not meet right formula but in high capacity production .
Simple to test: Their planar geometry makes them convenient for laboratory testing.
Versatile: They can be adapted to different module designs and filtration processes.
High surface area to volume ratio: When arranged in modules, they can provide a large surface area for filtration in a relatively compact space.
05

Flat sheet membrane because of its specific formula technology, there may be a slight color difference, but not influence its performance.
For the package, because of neat appearance and stable pallet, we use strong carton to well pack.
Due to particularity of the flat sheet membrane, should be stored in dry and cool place, no direct sunlight, avoid too dry or too wet, keep humidity between 30%-70%, control temperature range from 5-35°C; Try to use it earlier, and keep storage within three months since goods delivery. If the flat sheet membrane not used in one time, pls keep the remaining membrane flat sheet in dark and dry place.

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Membrane Flat sheet parameters
For the flat sheet membrane nanofiltration mainly focus on NF30, NF60 and NF90:
|
Model |
Average flux (L/(m2·h) |
Minimum flux (L/(m2·h) |
Average salt rejection (%) |
Minimum salt rejection (%) |
|
NF30 |
55 |
50 |
97 |
96.5 |
|
NF60 |
50 |
45 |
98 |
97 |
|
Model |
Minimum salt rejection (%) |
Minimum flux (L/(m2·h) |
Average flux (L/(m2·h) |
|
NF90 |
90 |
40 |
50 |
Testing solution type ............. 2000ppm MgSO4 for NF30 and NF60; 250ppm NaCl for NF90
Testing pressure .................. 70 psi for NF30 & NF60; 60psi for NF90
Testing solution pH value ............ 7.5~8.0;
Testing solution temperature ............... 25°C;
Surface flow velocity ≥ 0.45m/s
For the SWRO membrane sheet performance data:
|
Type |
Testing condition (NaCl solution) |
Standard |
||||
|
Concentration ppm |
Pressure |
Temperature℃ |
pH |
Salt rejection (%) |
Flux GFD/PSI |
|
|
SW |
32000ppm |
5.5Mpa |
25 |
8 |
>99.75 |
0.025±0.003 |







