The CTNF wide-channel nanofiltration (NF) membrane element is a high-performance solution designed for high-concentration industrial wastewater, near-zero liquid discharge (MLD/ZLD), and zero-discharge systems. Its wide-channel design and high effective membrane area ensure stable operation while optimizing organic removal and partial water softening, providing an efficient solution for wastewater treatment and resource reuse.
The CTNF wide-channel NF membrane features a disc-type structure and optimized flow channels. Wastewater is pressure-driven through the membrane discs, allowing water molecules and some low-molecular-weight salts to pass as permeate, while high-molecular-weight organics, certain salts, and hardness components are retained.
The wide-channel design reduces concentration polarization, enhances fouling resistance, and the membrane offers a broad pH tolerance range, ensuring stable operation in complex chemical and high-salinity wastewater environments.
l High Performance: Large effective membrane area increases water production per unit volume.
l Strong Fouling Resistance: Optimized flow channels reduce concentration polarization and minimize fouling.
l High Organic Removal: Efficiently removes organic matter while providing partial water softening.
l Consistent Water Quality: Permeate hardness is kept at a low level to meet process requirements.
l Wide pH Tolerance: Suitable for operation and cleaning in various acidic and alkaline environments.
l Durable Structure: Designed for long-term stable operation, reducing maintenance costs.
l Chemical & Petrochemical Industry: Concentration and reuse of high-salinity wastewater.
l Steel Industry: Treatment of high-salinity, high-pollution wastewater.
l Pulp & Paper Industry: Black liquor and wastewater concentration for reuse.
l Lithium-Ion Battery Industry: Concentration of plating and process wastewater.
l Power Generation: Concentration of circulating cooling water and boiler make-up water.
l Textile Industry: Zero-discharge treatment and resource recovery of high-salinity dyeing and finishing wastewater.
| Item | CTNF-8040 |
| Effective Area (m²) | 37 |
| Feed Spacer Thickness (mil) | 34 |
| Permeate Flow (m³/d) | 47 |
| Stable Salt Rejection (%) | 97 |
| Minimum Salt Rejection (%) | 97 |
| Dimensions (L×W×H) | 1016 × 29 × 201 mm |
| Max Operating Pressure (bar) | 41 |
| Max Operating Temperature | 45℃ |
| Max Pressure Drop | 15 psi (1.0 bar) |
| pH Range | Continuous: 3–10; Short-term cleaning (30 min): 1–12 |
| Max SDI | 5 |
| Free Chlorine Tolerance | <0.1 ppm |
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