SHANGHAI CM

Ultrafiltration Membrane (UF)

Ultrafiltration (UF) is a separation principle for screening, with pressure as the driving force to realize mechanical separation membrane separation process , namely under certain pressure , when the mixed solution of large molecules or a small molecule solute through the membrane surface, solvent (e.g., inorganic salt) and small molecule solutes through the membrane, and the solute molecules due to mechanical filtration membrane as concentrate intercept. To achieve the purpose of purification, separation and concentration.

Hollow fiber ultrafiltration membrane is an important form of separation membrane . The membrane pores are capillary , and the micropores are located on the wall of the tube. The solution is based on whether its components can be purified, separated and concentrated through these micropores.Among the membrane components per unit volume, hollow fiber membrane has the largest effective area , high filtration and separation efficiency , easy cleaning , simple structure , easy operation and low price .The production process does not produce secondary pollution, so it is widely used.

Operating Parameters

MaterialPESPVDFPAN
Module(Inside-out)(Inside-out)(Outside-in)(Inside-out)
Membrane diameter ID/OD(mm)1.0/1.60.7/1.30.7/1.31.4/2.2
Maximum Feed turbidity<50NTU<100NTU<80NTU
Maximum chlorine resistancecontinuously 50ppm
Instantaneously 500ppm
continuously 200ppm
Instantaneously 2000ppm
continuously 5ppm
Instantaneously 100ppm
Temperature range2-102-122-10
PH range5-45 ℃
Operation moduleCross flow or dead-end
Maximum permeate Flux120L/m²·h150L/m²·h150L/m²·h
Maximum Feed pressure0.5 MPa
Maximum trans membrane pressure0.2 MPa
Maximum Back wash pressure0.25 MPa
Back wash frequency15-60 min
Back wash duration30-60 sec
Back wash flux100-360 L/m²·h
Chemical enhanced backwash (CEB) frequency1-15 day
Chemical enhanced backwash (CEB) duration1-10 min
Chemical cleaning frequency30-180 day
Chemical cleaning duration90-480 min
Chemical cleaning chemicalsNaClO Or H2O2 (500ppm),
NaOH(pH≤12), HCl(pH≥2)
NaClO Or H2O2 (2000ppm),
NaOH(pH≤10), HCl(pH≥2)
NaClO Or H2O 2 (100ppm),
NaOH(pH≤10), HCl(pH≥2)

Two working modes of ultrafiltration membrane

External pressure(outside-in)

he original liquid is driven by the pressure difference , penetrates radially from the outside to the inside, through the hollow fiber to become the osmotic fluid, and the trapped concentrated material is collected in the outside of the hollow

ModelMembrane MaterialLateral Centerdistance L1 (mm)Module DimensionsEffective Membrane AreaDesigen flux (for most feed waters)
[m3/0.1Mpa 25℃]
Nominal Proe Size
UF-160PES990φ160×13303050-80L
(L/㎡•h)
0.01um
UF-160L1386φ160×181040
UF-2251600φ225×173060
UF-225L1630φ225×176060
UF-2501600φ250×171575
UF-28601630φ225×186050
UF-28802130φ225×236075
UF-90PVDF910φ90×1100940L-100L
(L/㎡•h)
0.08um
UF-160990φ160×133030
UF-160L1386φ160×181040
UF-2001000φ200×141540
UF-2251600φ225×173060
UF-225L1630φ225×176060
UF-2501600φ250×171575
UF-28601630φ225×183050
UF-28802130φ225×236075

Internal pressure(in-outside)

The original solution into the hollow fiber membrane, driven by the pressure difference, radial from inside to outside through the hollow fiber into osmotic fluid, concentrated liquid is left in the hollow fiber, from the other end out.

ModelMembrane MaterialLateral Centerdistance
L1 (mm)
Module DimensionsEffective Membrane AreaDesigen flux (for most feed waters)
[m3/0.1Mpa 25℃]
Nominal Proe Size
UF-90PES910φ90×11004.550-80L
(L/㎡•h)
0.01um
UF-160990φ160×133020
UF-2001000φ200×141525
UF-2251600φ225×173040
UF-225L1630φ225×176040
UF-2501600φ250×171550
UF-273 φ273×183080
UF-2191742φ219×190240
UF-315780φ315×130255
UF-315L1300φ315×182280
UF-4040φ90×10104
UF-8040φ200×101020
UF-8060φ200×152745
UF-90PAN910φ90×1100460L-120L
(L/㎡•h)
0.02um
UF-160990φ160×133010
UF-2001000φ200×141518
UF-2251600φ225×173030
UF-225L1630φ225×176030
UF-2501600φ250×171535
UF-4040φ90×10103.5
UF-8040φ200×101015

Workshop Production

Customization is accepted and alternatives to other brands of products can be provided.

Projects we completed

About Us

Shanghai CM Company

Shanghai CM Environmental Technology Co., Ltd. mainly engaged in ultrafiltration membranes, nanofiltration membranes, reverse osmosis membranes, Seawater membranes, hollow fiber membrane bioreactor ,flat sheet membrane bioreactor and sewage treatment systems, and the company’s products are widely used in pure water preparation and sewage treatment projects. Shanghai CM has more than twenty years of production and export experience, products have professional certificates, and hold a number of patent technology. The company’s products are exported to more than 60 countries and regions.

Exthbition

Shanghai CM’s 2023 global exhibition live events

Manila, Philippines
Mar 22-24, 2023

Jakarta, Indonesia
Aug 31-Sep 1, 2023

Moscow, Russia
Sep 12-14, 2023

Dubai, United Arab Emirates
Nov 15-17, 2023

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