Sanitary Reverse Osmosis Membrane
Product Description
- The sanitary membrane element is engineered as a hygienic separation component for demanding industrial processes where product safety, cleanliness, and operational reliability are critical.
- It is designed to ensure controlled fluid handling under continuous operation, supporting stable separation performance while maintaining strict hygiene standards throughout the process lifecycle.
- The structural concept focuses on process stability and cleanability, enabling the system to maintain consistent operation even under variable feed conditions and frequent cleaning cycles.
- Special attention is given to product integrity protection, ensuring that the treated stream remains isolated from contamination sources during operation and maintenance stages.
- The element is suitable for integration into hygienic process systems requiring high operational reliability, low contamination risk, and long-term stable performance.
Product Features
- The membrane element is developed under a hygiene-first engineering concept, focusing on minimizing contamination risks throughout the entire fluid-contact pathway.
- All internal contact surfaces are designed to reduce material retention and avoid areas where product residues may accumulate during operation or shutdown.
- The configuration is optimized to limit stagnant zones where microbial colonies could potentially develop, supporting safer long-term operation in sensitive industries.
- The element is fully compatible with standard industrial cleaning procedures, allowing effective removal of organic, inorganic, and biological residues without dismantling the system.
- The membrane maintains structural integrity and separation consistency even after multiple chemical cleaning cycles, ensuring long-term sanitary reliability.
- Surface characteristics and material selection are optimized to slow down biofilm formation, reducing the frequency of biological contamination events.
- The design emphasizes the protection of product quality by preventing cross-contamination between feed and permeate streams under hygienic operating conditions.
- The membrane is engineered to maintain sanitary performance consistency over long-term continuous operation in demanding process environments.
Reverse osmosis membrane performance parameters
|
model |
ROA-8040/34SU |
ROB-8040/34SU |
|
Ratio of desalinization |
99.3% |
99.8% |
|
Diaphragm Material |
aromatic polyamide |
|
|
Membrane area (ft2/m2) |
365(34)±3% |
|
|
Flux (LMH) |
5-15 |
|
|
Temperature tolerance (°C) |
≤45 |
|
|
Operating pressure (bar) |
≤50 |
|
|
Single diaphragm pressure differential (psi/bar) |
6-10(0.4-0.7) |
|
|
Normal Operating pH |
2-10 |
|
|
Clean pH |
1-13 |
|
|
Cleaning pressure (psi/bar) |
75-100/5.2-6.9 |
|
|
Residual chlorine tolerance (ppm) |
≤0.1 |
|
|
Maximum inflow SDI |
≤5 |
|
|
Customizable size |
1812/3838/4038/4040/8038/8040 |
|
Product size parameter



|
Membrane element size |
A (±2.0mm) |
B (±0.5mm) |
C (±0.1mm) |
|
1812 |
305 |
15.7 (inner diameter) |
45 |
|
3838 |
965 |
21.0 (outer diameter) |
97 |
|
4038 |
965 |
12.8 (outer diameter) |
100 |
|
4040 |
1016 |
19.0 (outer diameter) |
100 |
|
8038 |
965 |
28.8 (inner diameter) |
200 |
|
8040 |
1016 |
28.8 (inner diameter) |
200 |
About Us
In Integrated Solutions
Hangzhou Nanoimp Environmental Technology Co.,Ltd. established in 2019 and headquartered in Hangzhou, China, specializes in the research, manufacturing, and innovation of advanced separation membranes. The company is committed to providing integrated solutions for material separation and wastewater resource recovery.
Nanoimp has established independent subsidiaries, with the Foshan Branch specializing in the production of public water purification equipment and the Haining Branch focusing on manufacturing PTFE MBR products.





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