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Address: Bldg 10-1, # 11 Lingang Rd, Renhe Street, Yuhang Dist, Hangzhou, China
Contact name:Tony Zhang
Hangzhou Kaihong Membrane Technology Co., Ltd. |
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Columned UF Equipment System for Water Purification with PVDF material
1.1 Ultrafiltration is a variety of membrane filtration in which forces such as 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. This separation process is used in industry and research for purifying and concentrating macromolecular solutions, especially protein solutions.
Cross Flow Ultrafiltration (also known as Tangential Flow
Ultrafiltration) is a separation process where the feed stream is
in parallel to the membrane surface, which helps to control the
formation of the gel layer, greatly improving flux stability and
membrane life vs. perpendicular flow systems.
As opposed to conventional filtration which causes a quick build-up
of solids onto the membrane surface, cross flow filtration
increases the passage of permeate through the membrane and overall
flux efficiency.
Both sanitary and industrial ultrafiltration membranes are comprised of a semi-permeable, polymeric membrane layer cast onto a uniform substrate, or backing material. Synder Filtration employs phase inversion to extra solvents out of the liquid polymer dope that has been cast onto the backing material. As the solvents are extracted, the polymer solidifies forming an asymmetric pore structure, which is ideal for controlling rejection at the surface, while promoting maximum throughput of permeate.
2.2 Structure and Specifications of UF Membrane Modules
2.2.1 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 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 |
2.2.3 type B of 8 inches UF module. The structure as the following:
Size and weight
| Model | KH-UF-SFX2860-PVDF | KH-UF-SFX2880-PVDF |
| Module Diameter (OD, mm) | Φ225 mm | Φ225 mm | |
| Module Length ( L1, mm) | 1500 mm | 2000 mm | |
| Module Length (L2, mm) | 1630 mm | 2130 mm | |
| Module Length (L3, mm) | 1820 mm | 2320 mm | |
| Module Length (L , mm) | 1860 mm | 2360 mm | |
| Operating Type | Outside to Inside | Outside to Inside | |
| Membrane Area | 52 m2 | 77 m2 | |
| Dry weight of the module | 42 Kg | 62 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℃) | ≥ 6500L/H | ≥ 8000L/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:
