Hygienic Spiral Wound Reverse Osmosis Membrane

1. Features FDA food-contact certification, well suited for food-grade water treatment systems.
2. Hygienic spiral membrane assembly fitted with PSU fittings and PP mesh cage.
3. A selection of RO flat sheet grades available: TW, BW and SW for custom specification.
4. Custom element sizes offered across standard range from 1812 up to 8040.

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Hygienic Spiral Wound Reverse Osmosis Membrane

membrane performance parameters

model	ROA-8040/34SU	ROB-8040/34SU
Ratio of desalinization	99.3%	99.8%
Membrane area (ft2/m2)	365(34)±3%
Temperature tolerance (°C)	≤45
Operating pressure (bar)	≤50
Normal Operating pH	2-10
Clean pH	1-13

Product Size Parameters

Membrane element size	A (±2.0mm)	B (±0.5mm)	C (±0.1mm)
1812	305	15.7 (inner diameter)	45
3838	965	21.0	97
4038	965	12.8	100
4040	1016	19.0	100
8038	965	28.8 (inner diameter)	200
8040	1016	28.8 (inner diameter)	200

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Application Scenarios

Food, Beverage & Dairy Fabrication
Pharmaceutical and Cosmetic Production
Non-dialysis sanitary water systems in hospitals
Water preparation for life science research and precision manufacturing

Related Knowledge

Judgment of Membrane Fouling

How to identify membrane fouling. Key parameters are listed below:

(1) The most critical indicator is the difference in membrane flux (units such as LMH or LPM) under identical operating conditions (same pressure, temperature and recirculation flow rate). Generally, membrane fouling is confirmed when the flux of used membranes drops below 85% of that of new membranes.

(2) Membrane fouling usually leads to changes in membrane rejection performance, which may either increase or decrease.

(3) Under identical operating conditions, the pressure difference across the membrane module rises after fouling, which means the transmembrane resistance increases.

Warranty Period

The company warrants the performance of membrane elements for three 3 years. The three-year warranty period shall commence on the earliest of the following dates:

The date when the reverse osmosis system is put into operation;
Six 6 months from the date the membrane elements are shipped from the manufacturing site;
Three 3 months after the membrane elements are shipped from Guangzhou / Shanghai, China to Taiwan of China, Japan, South Korea, Thailand, India, Malaysia, the United States and other designated locations in China.

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