Reinforced Ultra Filtration Hollow Fiber Membrane for Water
Purification with PVDF material
Ultrafiltration (UF) is a variety of membrane filtration in which
forces like pressure or concentration gradients lead to a
separation through a semipermeable membrane. Suspended solids and
solutes of high molecular weight are retained in the so-called
retentate, while water and low molecular weight solutes pass
through the membrane in the permeate (filtrate). This separation
process is used in industry and research for purifying and
concentrating macromolecular (103 – 106 Da) solutions, especially
protein solutions.
Hollow fiber ultrafiltration membrane is an asymmetric membrane
made of a polymer material by special technology. It is a hollow
capillary tube wall with microporous, under the action of pressure
and the liquid flow inside the membrane, the solvent or small
molecules can pass through the membrane, by collecting and become
super filtrate, and one of the high polymer material (protein,
nucleic acid, polysaccharide, etc.), and colloidal particles are
stopped on the membrane surface, was taken away by circulating
fluid concentrate and be concentrate, so as to achieve the
separation of matter, and the purpose of enrichment and
purification.
Structure and Specifications of UF Membrane Modules
Small size of UF modules
Size and weight
| Model | KH-UF-4040W-PVDF | KH-UF-6040W-PVDF |
| Module Diameter ( A, mm) | Φ90 mm | Φ160 mm |
| Module Length ( B, mm) | 960mm | 960mm |
| Module Length (C, mm) | 1106 mm | 1304 mm |
| Size of Inlet/Outlet (D, mm) | DN25 | DN32 |
| Operating Type | Outside to Inside | Outside to Inside |
| Membrane Area | 8.0 m2 | 20 m2 |
| Dry weight of the module | 5 Kg | 12 Kg |
Parameters | Shell material | UPVC | UPVC |
| Membrane Material | PVDF | PVDF |
| Membrane pore size | 0.03μm | 0.03μm |
| Inner diameter of the hollow fiber | 0.7 mm | 0.7 mm |
| Outer diameter of the hollow fiber | 1.3mm | 1.3mm |
| Turbidity of Permeating water | ≤ 0.2NTU | ≤ 0.2 NTU |
SDI value of permeating water
| ≤ 3 | ≤ 3 |
Flux rate of purified water (0.10MP,20℃) | ≥1000L/H | ≥3000L/H |
Typical Process
| Temperature Range | 5-45 ℃ | 5-45 ℃ |
| PH Value Range | 2-13 | 2-13 |
Permeating Flux rate for different Water | 40 - 80 l/m2/hr | 40 -80 l/m2/hr |
| Operating Pressure | ≤0.12 MPa | ≤0.12MPa |
| Maximum Inlet Pressure | 0.2 MPa | 0.2MPa |
| Backwashing flux rate | 1.5-2.0 times of Permeating Flux | 1.5-2.0 times of Permeating Flux |
| Backwashing times | Once per 30-120 minutes | Once per 30-120 minutes |
| Chemical cleaning online during backwashing | Once per 7-14 days | Once per 7-14 days |
The whole installation and application process of our MBR modules
are described as the following photo:
