UF ultrafiltration membrane

UF ultrafiltration membrane is a physical filtration material based on sieving separation mechanism. It selectively intercepts colloids, bacteria, large organic molecules, and micro particulate matter under the drive of transmembrane pressure difference, while allowing water, ions, and small molecular solutes to pass through, achieving purification, concentration, and classification separation of solutions. The core materials include organic polymers such as polyvinylidene fluoride, polyether sulfone, and polyacrylonitrile, as well as inorganic ceramic systems such as alumina and zirconia.

UF ultrafiltration membrane adopts PVDF polymer hollow fiber membrane fibers with high mechanical strength and chemical resistance, ensuring longer service life and reliable and stable operation of membrane components. It can effectively remove bacteria, viruses, and particles including colloids to protect subsequent process equipment such as reverse osmosis systems. The characteristics of high strength and strong chemical resistance ensure a longer service life of membrane components. The characteristics of easy cleaning and wetting enable it to maintain good performance for a long time. The external pressure structure can withstand higher concentrations of suspended solids in the incoming water, reducing the need for pre-treatment processes.

Product Specifications

model	application	Effective membrane area	Membrane module capacity	Weight (empty/filled with water)
HN8080P	preprocessing	77m2 (829 ft2)	39L (10.3gal)	61/100 kg (135/220 lb)
HN8080D	NSF/ANSI 61 drinking water	77m2 (829 ft2)	39L (10.3 gal)	61/100 kg (135/220 lb)

UF ultrafiltration membrane operating parameters:

Filtration flux at 25 ℃: 40-90 l/m2/hr

PH value (operation) 2-11

Maximum membrane module inlet pressure (@ 20 º C): 6.25 bar

Maximum operating air flushing flow rate: 12 Nm3/hr

Maximum NaCIO tolerance concentration: 2000 mg/L

Turbidity (maximum) 300 NTU

Flow direction setting...... External pressure, dead end filtering

Expected filtration sludge density index (SDI) ≤ 2.5

Flow range: 3.1-6.9 m3/hr

Temperature: 1-40 ℃

Maximum working transmembrane pressure difference: 2.1 bar

Maximum backwash pressure: 2.5 bar

Maximum allowable concentration of suspended solids: 100 mg/L

Particle size (maximum) 300 μ m

Expected filtration turbidity: ≤ 0.1 NTU

*Operation: During startup, shutdown, cleaning, or other operations, it is necessary to avoid damage to the membrane components caused by sudden pressure changes. Before starting, the UF system should be flushed, the transport protective fluid should be removed, and any residual air should be expelled. When running for the first time, the equipment needs to be manually started, with the initial water production controlled at 60% of the design water production. The water produced during the initial work needs to be drained completely, depending on the application.

*Tip: Before initializing the system startup program, membrane preprocessing, membrane component installation, device debugging, and other system testing should be carried out. Correct startup operation and normal system startup help ensure that system operating parameters comply with design specifications, guarantee the normal operation of membrane components, and prevent damage.