Tapfilm® Series Drinking Water Nanofiltration Membrane Products
Shuiyi Tapfilm® series drinking water nanofiltration membrane products include TNF90 and TNF70 models, which selectively remove organic matter and hardness from raw water for purification and softening.
TNF90 removes approximately 90% of hardness, while TNF70 removes about 70% of hardness.
Description
- Low operational energy consumption
Operate at low pressure, effectively reducing energy consumption. - High COD removal rate
An advanced formulation system ensures more stable retention performance.
Data Sheet
| Model | Parameter | |||||
| Item | TNF90-8040 | TNF90-4040 | TNF70-8040 | TNF70-4040 | ||
| Membrane element parameters⁽¹⁾ | Effective membrane area | 37m² | 8.4m² | 37m² | 8.4m² | |
| Membrane material | Aromatic polyamide | |||||
| Structure | Spiral-wound | |||||
| Inlet mesh thickness | 34mil | 28mil | 34mil | 28mil | ||
| Dry membrane weight | 13kg | 4kg | 13kg | 4kg | ||
| Wet membrane weight | 15kg | 4.5kg | 15kg | 4.5kg | ||
| Length | 1016mm | |||||
| Diameter | 201mm | 99mm | 201mm | 99mm | ||
| Collector pipe diameter | 29mm | 19mm | 29mm | 19mm | ||
| Standard test solution | 500mg/L NaCl₂ | 2000mg/L MgSO₄ | ||||
| Operating pressure | 0.5MPa | 0.75MPa | ||||
| Test temperature | 25℃ | |||||
| Recovery rate | 15% | |||||
| pH | 7~8 | |||||
| Water production rate ⁽²⁾ | 38m³/d | 7.5m³/d | 35m³/d | 8.5m³/d | ||
| Standard rejection rate | 98%(MgSO₄); 98%(CaCl₂); 90%(NaCl) | ≥99%(MgSO₄); 45~55%(NaCl) | ||||
| Membrane operational parameters | Maximum operating pressure | 4.0MPa/580psi | ||||
| Maximum inlet water flow | 17m³/h | 3.6m³/h | 17m³/h | 3.6m³/h | ||
| Inlet water temperature range | 5~40℃ | |||||
| Inlet water pH range | 2~11 | |||||
| Cleaning pH range⁽³⁾ | 1~12 | |||||
| Maximum inlet water turbidity | 1.0NTU | |||||
| Maximum inlet water SDI₁₅ | 5.0NTU | |||||
| ter residual chlorine | <0.1mg/L | |||||
| Maximum pressure drop per element⁽⁴⁾ | 0.1MPa | |||||
Note:
(1) The parameters mentioned are based on data collected after the system has been running stably for 30 minutes;
(2) Water production volume has a deviation range of ±15%;
(3) Chemical cleaning is recommended at temperatures ≤30°C, with cleaning solution pH values not exceeding 2.0-12.0 above this temperature;
(4) When running in multi-element pressure vessels, the maximum pressure drop across the vessel should be kept within 0.25 MPa, not exceeding 0.3 MPa under any circumstances.
Data presented in the text are tested and reliable, yet variations may occur due to different testing methods and conditions. Therefore, users should thoroughly understand the products of Ningbo Shuiyi Membrane Technology Development Co., Ltd., integrating them into their actual application processes.
Applications
Shuiyi Tapfilm® series drinking water nanofiltration membranes, known for their high removal rates of organics and
hardness, are suitable for the advanced treatment of municipal water supplies.
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