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Home Parts Membranes CategoryRO Membrane

RO Membrane

RO Membrane Achieves Water Purification

RO membrane generally refers to semi-permeable membrane with a pore size of less than 1 nm. It has high selectivity and permeability and can filter out suspended solids, colloids, bacteria, viruses, dissolved salts, and other impurities contained in water so that the water does not contain substances other than water molecules, and meets pure water standards. It is widely used in power, petrochemical, iron and steel, electronics, pharmaceutical, food and beverage, municipal, and environmental protection fields.

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Industrial Seawater Desalination RO Membrane
Commercial Seawater Desalination RO Membrane
Industrial Brackish Water RO Membrane
Ordinary Brackish Water RO Membrane
Super Membrane

Industrial seawater desalination RO membrane is one of the critical components used in the desalination process to remove salt and impurities from seawater to obtain fresh water for drinking or agricultural irrigation. The industrial seawater desalination RO membrane elements we offer have excellent performance in terms of salt rejection rate, water production, pressure tightness, contamination resistance performance, stability, etc.

An industrial seawater desalination RO membrane

Product Dimensions

Industrial seawater desalination ro membrane size drawing

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Table 1: Industrial Seawater Desalination RO Membrane Dimensions
Membrane Model	A inch (mm)	B inch (mm)	C inch (mm)	D inch (mm)
SM SW-8040-400HR	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-4040-82HR	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM SW-8040-400XHR	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-8040-440XHR	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-4040-82XHR	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM SW-8040-400HRLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-8040-440HRLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-4040-82HRLE	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM SW-8040-400HRFR/34	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-8040-400XLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-8040-440XLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM SW-4040-82XLE	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)

Product Specifications

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Table 2: Industrial Seawater Desalination RO Membrane Specifications
Type	Active Area ft² (m²)	Minimum Rejection Rate (%)	Stabilized Rejection Rate (%)	Stabilized Boron Removal Rate (%)	Flux gpd (m³/d)
SM SW-8040-400HR	400 (37.2)	99.65	99.80	92.0	6,500 (24.5)
SM SW-4040-82HR	82 (7.6)	99.60	99.75	/	1,320 (5)
SM SW-8040-400XHR	400 (37.2)	99.70	99.82	92.0	6,100 (23)
SM SW-8040-440XHR	440 (41)	99.70	99.82	92.0	6,600 (25)
SM SW-4040-82XHR	82 (7.6)	99.60	99.75	/	1,180 (4.5)
SM SW-8040-400HRLE	400 (37.2)	99.65	99.80	92.0	7,400 (28)
SM SW-8040-440HRLE	440 (41)	99.65	99.80	92.0	7,900 (30)
SM SW-4040-82HRLE	82 (7.6)	99.60	99.70	/	1,600 (6.1)
SM SW-8040-400HRFR/34	400 (37.2)	99.65	99.80	92.0	7,400 (28)
SM SW-8040-400XLE	400 (37.2)	99.60	99.80	92.0	9,000 (34)
SM SW-8040-440XLE	440 (41)	99.60	99.80	92.0	9,750 (37)
SM SW-4040-82XLE	82 (7.6)	99.60	99.65	/	1,660 (6.3)
Test Conditions: 5.5 MPa (800 psi) pressure, 25 °C (77 °F), 32,000 ppm NaCl, pH = 8, Recovery: 8%

Commercial seawater desalination RO membranes are one of the critical components used in the desalination process in the commercial sector and are widely used in hotels, resorts, mariculture, industrial manufacturing, and other commercial applications to provide a reliable source of fresh water. Snowate commercial seawater desalination RO membranes adopt advanced automatic precision manufacturing technology, which makes the performance of the membrane element reliable and stable, ensuring large flux while taking into account excellent rejection rate, which can meet the needs of seawater desalination installed at sea and on land. At the same time, the operating pressure is lower, which can reduce the cost of high pressure pumps and lower operating costs. At the same time, the operating pressure is lower, which can reduce the cost of high pressure pumps and reduce operating costs.

A commercial seawater desalination RO membrane

Product Dimensions

Commercial seawater desalination ro membrane size drawing

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Table 3: Commercial Seawater Desalination RO Membrane Dimensions
Membrane Model	A inch (mm)	B inch (mm)	C inch (mm)	D inch (mm)
SM SW-2540-28HR	40 (1,016)	1.19 (30.2)	0.75 (19)	2.4 (61)
SM SW-4021-33HR	21 (533)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM SW-2521-12HR	21 (533)	1.19 (30.2)	0.75 (19)	2.4 (61)
SM SW-2540-28HRLE	40 (1,016)	1.19 (30.2)	0.75 (19)	2.4 (61)
SM SW-4021-33HRLE	21 (533)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM SW-2521-12HRLE	21 (533)	1.19 (30.2)	0.75 (19)	2.4 (61)

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Table 4: Commercial Seawater Desalination RO Membrane Specifications
Type	Active Area ft² (m²)	Stabilized Rejection Rate (%)	Minimum Rejection Rate (%)	Flux gpd (m³/d)
SM SW-2540-28HR	28 (2.6)	99.70	99.55	580 (2.2)
SM SW-4021-33HR	33 (3.1)	99.65	99.55	660 (2.5)
SM SW-2521-12HR	12 (1.1)	99.60	99.50	240 (0.9)
SM SW-2540-28HRLE	28 (2.6)	99.65	99.50	680 (2.6)
SM SW-4021-33HRLE	33 (3.1)	99.60	99.50	790 (3)
SM SW-2521-12HRLE	12 (1.1)	99.55	99.40	290 (1.1)
Test Conditions: 5.5 MPa (800 psi) pressure, 25 °C (77 °F), 32,000 ppm NaCl, pH = 8, Recovery: SW-2521/SW-4021: 5%, SW-2540: 8%

Industrial brackish water RO membrane is one of the critical components used to treat high salinity water sources, such as brackish water or water sources containing high concentrations of dissolved solids, featuring high salinity adaptability, anti-pollution, high-pressure operation, and large flux design. Industrial brackish water RO membranes are widely used in industrial fields such as oilfield extraction, chemical plants, power plants, pharmaceutical plants, and some special agricultural irrigation and water treatment projects. They provide a reliable solution for treating high salinity water sources, contributing to sustainable water management, and meeting industrial water needs.

An industrial brackish water RO membrane

Product Dimensions

industrial brackish water ro membrane size drawing

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Table 5: Industrial Brackish Water RO Membrane Dimensions
Membrane Model	A inch (mm)	B inch (mm)	C inch (mm)	D inch (mm)
SM BW-8040-400HR	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-8040-440HR	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-4040-82HR	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM BW-8040-400FR/34	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-4040-82FR/34	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM BW-8040-400XFR/34	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-4040-82XFR/34	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM BW-8040-400HRLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-8040-440HRLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-4040-82HRLE	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM BW-8040-400FRLE/34	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-4040-82FRLE/34	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM BW-8040-400XLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-8040-440XLE	40 (1,016)	/	1.125 (29)	7.9 (201)
SM BW-4040-82XLE	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)

Product Specifications

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Table 6: Industrial Brackish Water RO Membrane Specifications
Type	Active Area ft² (m²)	Minimum Rejection Rate (%)	Stabilized Rejection Rate (%)	Flux gpd (m³/d)
SM BW-8040-400HR	400 (37.2)	99.40	99.70	11,350 (43)
SM BW-8040-440HR	440 (41)	99.40	99.70	12,560 (48)
SM BW-4040-82HR	82 (7.6)	99.30	99.50	2,250 (8.6)
SM BW-8040-400FR/34	400 (37.2)	99.35	99.50	11,100 (42)
SM BW-4040-82FR/34	82 (7.6)	99.30	99.50	2,000 (7.6)
SM BW-8040-400XFR/34	400 (37.2)	99.40	99.60	11,350 (43)
SM BW-4040-82XFR/34	82 (7.6)	99.40	99.60	2,050 (7.8)
SM BW-8040-400HRLE	400 (37.2)	99.10	99.30	11,350 (43)
SM BW-8040-440HRLE	440 (41)	99.10	99.30	12,560 (48)
SM BW-4040-82HRLE	82 (7.6)	99.00	99.30	2,250 (8.5)
SM BW-8040-400FRLE/34	400 (37.2)	99.10	99.30	10,500 (40)
SM BW-4040-82FRLE/34	82 (7.6)	99.00	99.30	1,900 (7.2)
SM BW-8040-400XLE	400 (37.2)	98.00	99.00	12,550 (47.5)
SM BW-8040-440XLE	440 (41)	98.00	99.00	14,000 (53)
SM BW-4040-82XLE	82 (7.6)	98.00	99.00	2,400 (9.1)
Test Conditions HR/FR/XFR series: 1.55 MPa(225 psi) pressure, 25 °C (77 °F), 2,000 ppm NaCl, pH = 8, Recovery: 15% HRLE/FRLE series: 1.03 MPa(150 psi) pressure, 25 °C (77 °F), 1,500 ppm NaCl, pH = 8, Recovery: 15% XLE series: 0.86 MPa(125 psi) pressure, 25 °C (77 °F), 500 ppm NaCl, pH = 8, Recovery: 15%

Ordinary brackish water RO membrane is a class of reverse osmosis membrane elements used for the treatment of brackish water, which is capable of effectively removing salts and dissolved solids in water and providing high-quality freshwater output and is suitable for desalination treatment of water sources such as surface water, ground water, tap water, and municipal water supply, etc., which have a relatively low salinity content.

In the treatment of brackish water, according to the different operating pressures, it can usually be divided into low pressure, ultra low pressure, and extra low pressure ordinary brackish water RO membranes.

Product Dimensions

ordinary brackish water ro membrane size drawing

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Table 7: Ordinary Brackish Water RO Membrane Dimensions
Membrane Model	A inch (mm)	B inch (mm)	C inch (mm)	D inch (mm)
SM LP-4040-82	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM LP-8040-400	40 (1,016)	/	1.125 (29)	7.9 (201)
SM ULP-4040-82	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM ULP-8040-400	40 (1,016)	/	1.125 (29)	7.9 (201)
SM ULP-8040-440	40 (1,016)	/	1.125 (29)	7.9 (201)
SM XLP-4040-82	37.9 (963)	1.05 (26.7)	0.75 (19)	3.9 (99)
SM XLP-8040-400	40 (1,016)	/	1.125 (29)	7.9 (201)
SM XLP-8040-440	40 (1,016)	/	1.125 (29)	7.9 (201)

Product Specifications

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Table 8: Ordinary Brackish Water RO Membrane Specifications
Type	Active Area ft² (m²)	Stabilized Rejection Rate (%)	Minimum Rejection Rate (%)	Flux gpd (m³/d)
SM LP-8040-400	400 (37.2)	99.60	99.30	11,100 (42)
SM LP-4040-82	82 (7.6)	99.60	99.30	2,250 (8.6)
SM ULP-4040-82	82 (7.6)	99.50	99.00	2,250 (8.6)
SM ULP-8040-400	400 (37.2)	99.50	99.00	11,350 (43)
SM ULP-8040-440	440 (41)	99.50	99.00	12,650 (48)
SM XLP-4040-82	82 (7.6)	99.00	98.00	2,220 (8.4)
SM XLP-8040-400	400 (37.2)	99.00	98.00	11,900 (45)
SM XLP-8040-440	440 (41)	99.00	98.00	13,200 (50)
Test Conditions LP series: 1.55 MPa (225 psi) pressure, 25 °C(77 °F), 2,000 ppm NaCl, pH= 8, Recovery: 15% ULP series: 1.03 MPa (150 psi) pressure, 25 °C(77 °F), 1,500 ppm NaCl, pH= 8, Recovery: 15% XLP series: 0.69 MPa (100 psi) pressure, 25 °C (77 °F), 500 ppm NaCl, pH = 8, Recovery: 15%

Super membrane is a kind of RO membrane, which is a membrane element with a dense and smooth surface layer that is chemically resistant and resistant to high temperatures produced by adopting leading separation membrane preparation technology according to different chemical characteristics of the treatment solution, temperature, and pressure operating conditions as well as water treatment and material separation requirements. It is tailor-made for high-end industrial users and is suitable for treatment processes such as difficult wastewater treatment, zero discharge, high concentration, high-concentrate salt separation, and acid and high temperature resistance application scenarios to meet the special water treatment needs of different industries.

A piece of super membrane on white background

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Table 9: Super Membrane Specifications (R50, R100,XR70, XR80)
Type	Effective Area ft² (m²)	Feed Spacer Thickness (mil)	Minimum Rejection Rate %	Stabilized Rejection Rate %	Flux gpd (m³/d)
SM SF-R50-400	400 (37.2)	34	99.20	99.60	11,000 (42)
SM SF-R100-400	400 (37.2)	34	99.40	99.70	11,500 (44)
SM SF-XR70	400 (37.2)	34	99.60	99.75	8,800 (35.5)
SM SF-XR80	440 (41)	28	99.20	99.50	9,050 (34.2)
Test Conditions R50, R100 series: 1.55 MPa (225 psi) pressure, 25 °C (77 °F), 2,000 ppm NaCl, pH = 8, Recovery: 15% XR70 series: 5.5 MPa (800 psi) pressure, 25 °C (77 °F), 32,000 ppm NaCl, pH = 8, Recovery: 8% XR80 series: 4.1 MPa (600 psi) pressure, 25 °C (77 °F), 32,000 ppm NaCl, pH = 8, Recovery: 8%

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Table 10: Super Membrane Specifications (HC1, HC4,HC2, HC3)
Type	Effective Area ft² (m²)	Feed Spacer Thickness (mil)	Stabilized Rejection Rate %	Flux gpd (m³/d)
SM SF-HC1-400	400 (37.2)	34	> 90	12,650 (48)
SM SF-HC1-82	82 (7.6)	34	> 90	2,550 (9.6)
SM SF-HC4-400	400 (37.2)	34	85–95 Nacl > 98 MgSO₄	7,980 (30.2)
SM SF-HC4-82	82 (7.6)	34	85–95 Nacl > 98 MgSO₄	1,720 (6.5)
SM SF-HC2-400	400 (37.2)	34	40–60 Nacl > 97 MgSO₄	9,300 (35.2)
SM SF-HC2-82	82 (7.6)	34	40–60 Nacl > 97 MgSO₄	1,900 (7.2)
SM SF-HC3-400	400 (37.2)	34	50–70 Nacl > 98 MgSO₄	8,450 (32)
SM SF-HC3-82	82 (7.6)	34	50–70 Nacl > 98 MgSO₄	1,850 (7)
Test Conditions HC1 series: 0.48 MPa (70 psi) pressure, 25 °C (77 °F), 2,000 ppm MgSO₄, pH = 7.8–8.2, Recovery: 15% HC4/HC3 series: 1.03 MPa (150 psi) pressure, 25 °C (77 °F), 2,000 ppm Nacl, 2,000 ppm MgSO₄, pH = 7.8–8.2, Recovery: 15% HC2 series: 0.48 MPa (70 psi) pressure, 25 °C (77 °F), 500 ppm Nacl, 2,000 ppm MgSO₄, pH = 7.8–8.2, Recovery: 15%

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Table 11: Super Membrane Specifications (AR)
Type	Housing Material	Permeate Flow Rate gpd( m³/d)	Rejection Rate (%)	Test Solution (ppm)	Test Pressure (psi)
SM SF-AR-400/34	FRP	7,690 (28.7)	98	2,000 MgSO₄	100
SM SF-AR-82	FRP	1,500 (5.6)	98	2,000 MgSO₄	100

Working Principle

RO membrane is generally installed in an FRP membrane housing. Let's take the end port membrane housing as an example to introduce the working principle of the RO membrane element.

Under pressure, raw water enters from the feed port with an inlet plug. After filtration, the permeate flows into the RO membrane central collector and moves towards the central collector of the next RO membrane element through interconnector; the concentrate flows out from the side of the RO membrane element and then flows into the feed port of the next RO membrane element. Finally, the permeate flows out from the central collector and the concentrate flows out from the drain port without a plug.

Structure

Table 12: Structure, Material & Function of RO Membrane
Structure	Central Collector Tube	Feed Water Carrier	Membrane	Permeate Carrier	Brine Sealing Ring	End Cap
Material	ABS resin, PPE, PPO, PSU, PVC	Grade A special PET;Grade B coated PET,Grade C PET + specialPET	CA, PA,compositemembrane	PET	EPDM (EPDM copolymer / rubber)	ABS
Function	Small on the tubeare usedto collectpermeate.	Combine membraneand feed water carriertogether to form afeed water channel toensure the water flowevenly to all cornersof the membranesurface	Effectivelyremoveinorganic saltsin the water	It can avoidmembraneadhesionand maintaina smoothpermeatechannel evenunder a higherpressure.	Brine sealing ring canonly be installed on theinlet port to prevent theconcentrate backflow.	It reduces the feedresistance andmakes the fluidevenly distributed. Meanwhile, itspressure resistantcapacity is alsoimproved by 50%; End cap hot meltrotary welding processfurther improves thedifferential pressureresistant capacity ofthe integrated ROmembranes.

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