SPRO Specialized Spiral-Wound Reverse Osmosis Membrane Elements

Strong hydrophilicity of the membrane sheet, large flux, low energy consumption.

	MFT-MS	Domestic Brand	International Brand
Contact angle	69.0°	69.1°	80.1°

Smooth surface of the membrane sheet, nearly electrically neutral, less prone to adsorb contaminants.

Roughness index reduced by more than 50% compared to domestic brands, about 20% lower than international brands.

Special modification of the membrane material, antioxidant, resistant to chemical cleaning, long service life.

In cyclic anti-pollution simulation experiments:

Flux decline reduced by approximately 86% compared to domestic brands, around 85% lower than international brands.

Desalination change rate reduced by approximately 32% compared to domestic brands, around 46% lower than international brands.

Special wide flow channel design, more resistant to fouling blockage, reduces pressure vessel pressure drop, good cleaning recovery effect.

Wider flow channel (34mil) + low-pressure differential feed grid 34LD + shorter and more numerous membrane leaves (26~27)

Special modified membrane sheets, specially designed pressure-bearing product water guide cloth, more resistant to high pressure, maximum operating pressure up to 120bar.

Precision interfacial reaction control process and excellent hydrophilic modification coating technology, under the same usage conditions, the membrane flux is superior.

Membrane flux is approximately 1.38 times that of domestic brands, more than 1.2 times that of international brands.

Membrane Element Model	Effective Membrane Area ft2(m2)	Feed Grid mil(mm)	Product Water Yield GDP（m3/d）	Stable Desalination Rate %	Minimum Desalination Rate %
SPRO 380-41-LD34	380（35.3）	34（0.86）	11500（43.5）	99.6	99.2
SPRO 365-83-34	365（34）	34（0.86）	8200（31）	99.5	99.2
SPRO 330-120-34	330（30.7）	34（0.86）	7400（28）	99.5	99.2

Testing conditions:

Test pressure: 225 psi (1.55 Mpa)

Test solution temperature: 25°C, test solution concentration (NaCl) 2000 ppm

Test solution pH value: 7.5

Recovery rate of single membrane element: 15%

Membrane Element Dimensions:

all units shown are in millimeters (inches)

A=1016.00mm(40”); B=201.90mm(7.95”); C=28.60mm(1.125”)

Operating limits:

Operating Conditions	SPRO 380-41-LD34	SPRO 365-83-34	SPRO 330-120-34
Maximum operating pressure	600psi（4.14Mpa）	1200psi（8.3Mpa）	1740psi（12Mpa）
Maximum feed water flow rate	75gpm（17 m³/h）	75gpm（17 m³/h）	75gpm（17 m³/h）
Maximum feed water temperature	45℃	45℃(pressure ≤ 8.3MPa)	45℃(pressure ≤ 8.3MPa)
	30℃(pressure > 8.3MPa)	30℃(pressure > 8.3MPa)	30℃(pressure > 8.3MPa)
Maximum SDI15 of feed water	5	5	5
Free chlorine concentration in feed water	＜0.1ppm	＜0.1ppm	＜0.1ppm
pH range	Continuous operation feed water pH range 3～10, chemical cleaning feed water pH range 2～12	Continuous operation feed water pH range 3～10, chemical cleaning feed water pH range 2～12	Continuous operation feed water pH range 3～10, chemical cleaning feed water pH range 2～12
Maximum pressure drop of a single membrane element	15psi（0.1Mpa）	15psi（0.1Mpa）	15psi（0.1Mpa）

SPRO 380-41-LD34  

High anti-pollution reverse osmosis membrane element

Used for near-zero discharge and resource recovery of wastewater, suitable for wastewater with total dissolved solids (TDS) below 10,000 mg/L, especially suitable for treating industrial wastewater containing minor organic pollutants, municipal wastewater, and slightly polluted water sources.

SPRO 365-83-34  

High anti-pollution reverse osmosis membrane element

Can be used for desalination of highly concentrated brackish water, various industrial water treatments such as boiler feedwater for power plants, and also for wastewater reuse, near-zero discharge high concentration, and concentration recovery of high-value-added substances like food and pharmaceuticals, capable of concentrating TDS in concentrate to 80,000 ppm, improving system recovery rate, and reducing concentrate volume.

SPRO 330-120-34  

High anti-pollution reverse osmosis membrane element

Developed specifically to further reduce concentrate volume, this high-pressure spiral-wound membrane product is suitable for concentrating wastewater with salinity levels of 70,000 ppm, capable of concentrating TDS in the concentrate to 105,000 ppm, equally applicable for industrial wastewater reuse, near-zero discharge high concentration, and concentration recovery of high-value-added substances like food and pharmaceuticals.

Selection Guide: