DF90
Beijing Origin Water Co., Ltd
Advanced Compact Low-Pressure High Rejection Nanofiltration Membrane for Desalination/Industrial Water Purification
The DF30 (Ultra-Low-Pressure Selective Nanofiltration Membrane), as a low-pressure separate membrane of which molecular weight cutoff is 150~500 Dalton and that is selectively permeable to soluble inorganic salts, is featured with low operating pressure and high recovery rate. It can efficiently remove the organic pollutants and phosphate in water. Meanwhile, as the TDS retention rate is low, no concentrated brine is produced. The product is one of the significant achievements in Major Science and Technology Program for Water Pollution Control and Treatment during “the 12th Five-Year Plan” and has been selected as the Major Environmental Protection Equipment Encouraged by the State and the First Major Technology and Equipment Demonstration Project in Zhongguancun National Independent Innovation Demonstration Zone. In addition, it has been awarded with multiple awards, such as the Beijing New Technology and New Products, the National Strategic Innovative Products and the National Key New Products, as well as the China Excellent Patent Award, the First Prize of Science and Technology Progress of Ministry of Education, the Second Prize of National Scientific and Technological Progress Award , etc.
Advantage
Selective separation: Efficiently remove organic pollutants and phosphate in water. TDS retention rate is low;
High recovery rate: The water recovery rate of the system reaches 90% and is above 15% higher than the traditional nanofiltration membrane;
Low operation pressure: The system operation pressure is 0.2~0.4MPa and is above 30% lower than the traditional nanofiltration membrane; Low operation cost: Long cleaning interval, less chemical consumption and less maintenance cost.
Specifications:
| Design Flux* | 15~25 LMH | Operation Pressure | 0.2~0.4MPa |
| Rejection Rate Of COD | > 85% | Removal Rate Of TDS | 25 %~50 % |
| Avg Influent SDI₁₅ | <3 | Max Influent SDI ₅ | 5 |
| Recovery Rate Of Element | 15 % | Influent Turbidity | <0.1 NTU |
| Maximum Concentration Of Free Chlorine | 0.1 ppm | Max Influent Temperature | 45 °C |
| Maximum Temperature Of Chemical Cleaning | 35°C | pH Range Of Feedwater During Operation | 3~10 |
| Max Influent Flow | 16 m3/h | pH Range Of Feedwater During Chemical Cleaning | 2~12 |
| Maximum Pressure Loss Of A Single Element | 0.1 MPa | Max Element Operation Pressure | 2.5 MPa |
Note: *Design flux is determined based on the water temperature and water quality conditions.
| Model | Permeated Flow* (m3/d) | Rejection Rate (%) | Standard Membrane Area (m2) | Dimension Φ×L (mm) | Spacer(mil) |
| DF-8040-R90(440) | 24.2NaCl | 90~97NaCl | 41 | 201×1016 | 28 |
| 25.7MgSO4 | >97MgSO4 | ||||
| DF-8040-R90(400) | 22.7NaCl | 90~97NaCl | 37 | 201×1016 | 34 |
| 24.6MgSO4 | >97MgSO4 |
Notes: (1) *The water permeate flow has土15% fuctuations according to the actual condition; (2) Test conditions: 2,000 ppm MgSO₄₁70 psi (0.48MPa), 25*C ,pH=7.5~8.0, recovery rate of 15%.
Applications:
Urban sewage advanced treatment as reclaimed water for industry;
Industrial desalination treatment;
Advanced Compact Low-Pressure High Rejection Nanofiltration Membrane for Desalination/Industrial Water Purification
The DF30 (Ultra-Low-Pressure Selective Nanofiltration Membrane), as a low-pressure separate membrane of which molecular weight cutoff is 150~500 Dalton and that is selectively permeable to soluble inorganic salts, is featured with low operating pressure and high recovery rate. It can efficiently remove the organic pollutants and phosphate in water. Meanwhile, as the TDS retention rate is low, no concentrated brine is produced. The product is one of the significant achievements in Major Science and Technology Program for Water Pollution Control and Treatment during “the 12th Five-Year Plan” and has been selected as the Major Environmental Protection Equipment Encouraged by the State and the First Major Technology and Equipment Demonstration Project in Zhongguancun National Independent Innovation Demonstration Zone. In addition, it has been awarded with multiple awards, such as the Beijing New Technology and New Products, the National Strategic Innovative Products and the National Key New Products, as well as the China Excellent Patent Award, the First Prize of Science and Technology Progress of Ministry of Education, the Second Prize of National Scientific and Technological Progress Award , etc.
Advantage
Selective separation: Efficiently remove organic pollutants and phosphate in water. TDS retention rate is low;
High recovery rate: The water recovery rate of the system reaches 90% and is above 15% higher than the traditional nanofiltration membrane;
Low operation pressure: The system operation pressure is 0.2~0.4MPa and is above 30% lower than the traditional nanofiltration membrane; Low operation cost: Long cleaning interval, less chemical consumption and less maintenance cost.
Specifications:
| Design Flux* | 15~25 LMH | Operation Pressure | 0.2~0.4MPa |
| Rejection Rate Of COD | > 85% | Removal Rate Of TDS | 25 %~50 % |
| Avg Influent SDI₁₅ | <3 | Max Influent SDI ₅ | 5 |
| Recovery Rate Of Element | 15 % | Influent Turbidity | <0.1 NTU |
| Maximum Concentration Of Free Chlorine | 0.1 ppm | Max Influent Temperature | 45 °C |
| Maximum Temperature Of Chemical Cleaning | 35°C | pH Range Of Feedwater During Operation | 3~10 |
| Max Influent Flow | 16 m3/h | pH Range Of Feedwater During Chemical Cleaning | 2~12 |
| Maximum Pressure Loss Of A Single Element | 0.1 MPa | Max Element Operation Pressure | 2.5 MPa |
Note: *Design flux is determined based on the water temperature and water quality conditions.
| Model | Permeated Flow* (m3/d) | Rejection Rate (%) | Standard Membrane Area (m2) | Dimension Φ×L (mm) | Spacer(mil) |
| DF-8040-R90(440) | 24.2NaCl | 90~97NaCl | 41 | 201×1016 | 28 |
| 25.7MgSO4 | >97MgSO4 | ||||
| DF-8040-R90(400) | 22.7NaCl | 90~97NaCl | 37 | 201×1016 | 34 |
| 24.6MgSO4 | >97MgSO4 |
Notes: (1) *The water permeate flow has土15% fuctuations according to the actual condition; (2) Test conditions: 2,000 ppm MgSO₄₁70 psi (0.48MPa), 25*C ,pH=7.5~8.0, recovery rate of 15%.
Applications:
Urban sewage advanced treatment as reclaimed water for industry;
Industrial desalination treatment;
