8 inch Ultafiltration(UF) Membrane Modules for Purified Water
Treatment with Pore Size 0.03um PVDF material
Ultrafiltration (UF) is another reliable and cost effective water
treatment method.
This separation process is used in industry and research for purifying and concentrating
macromolecular solutions, especially protein solutions with other applications including
- Process and waste water treatment
- Filtration of effluent from paper pulp mill
- Cheese manufacture (using ultrafiltered milk)
- Removal of some bacteria from milk
- Fruit juice concentration and clarification
- Laboratory grade manufacturing
The ultrafiltration membrane pore size creates a barrier to
suspended solid, bacteria, colloids and viruses whilst still
allowing passage of ions. As such, the mineral content of water
passing through an ultrafiltration membrane does not appreciably
change (further removal of mineral contact might be achieved
through the use of Ion exchange resin treatments such as water
softening, deionisation or demineralisation depending on the fuller
scope of the process required).
UF membranes operate at much lower pressures than Reverse Osmosis (RO) membranes and require a higher degree of cross-flow to prevent plug
fouling.
A more recent development in membrane technology, the cost of
ultrafiltration membranes has reduced considerably in recent years,
making it a much more effective cost option for a number of
applications, including river extraction. Ultrafiltration is also
often used as a very effective pre-treatment to reverse osmosis.
Typically employed in hollow fibre construction, operation of
ultrafiltration membranes can be from outside-to-in (i.e. fed from
outside the fibre with permeate collected from within) or
inside-to-out, dependent upon the specific manufacturer and
application. The robust construction of the fibres generally
enables periodic back flushing of membranes to reduce plug fouling.
The cleaning of membranes is also enhanced by the introduction of
chemicals, such as sodium hypochlorite or sodium hydroxide, via a
dedicated Clean in Place (CIP).
The structure as the following:2.2.2 type A of 8 inches UF module.
Size and weight
| Model | KH-UF-8040W-PVDF | KH-UF-8060W-PVDF |
| Module Diameter ( A, mm) | Φ200 mm | Φ200 mm |
| Module Length ( B, mm) | 1220 mm | 1640 mm |
| Module Length (C, mm) | 1365 mm | 1785 mm |
| Size of Inlet/Outlet | DN50 | DN50 |
| Operating Type | Outside to Inside | Outside to Inside |
| Membrane Area | 30 m2 | 45 m2 |
| Dry weight of the module | 20 Kg | 35 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 for of purified water (0.10MP,20℃) | ≥ 3600L/H | ≥ 5400L/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:
