Redfil Water Treatment Seawater Desalination Plants Hollow Fiber NF Membrane China Hnf-W 2860 Hollow Fiber NF Membrane for Water Treatment

• Customization: Available
• Membrane Type: Hollow
• Type: NF
• Model NO.: HNF-W 2860
• Condition: New
• Material: Modified Polyethersulfone Composite Membrane
• R(Mgso4): >90%
• R(Nacl): <18%
• Characteristic: High Chlorine Resistance,Antibacterial,Backwashing
• Applicable Industries: Water Treatment
• Inner and Outer Diameter (mm): 0.5/0.9
• Membrane Pore Radius (Nm): 0.4
• Pwp ( Lmh/Bar ): 7-8
• Weight: 15kg
• Size: 1500*350*350mm
• Transport Package: Standard Shipping Packaging or Customized
• Specification: 427*75*75mm
• Trademark: REDFIL
• Origin: Jiangshu, China
• HS Code: 85122010
• Production Capacity: 100000

Product Description

REDFIL Water Treatment Seawater Desalination Plants Hollow Fiber NF Membrane China HNF-W 2860 Hollow Fiber Nf Membrane For Water Treatment

Product Description

HNF-W Water Treatment Series Nanofiltration (NF) Membrane

The HNF-W water treatment series adopts hierarchical structure synchronous construction technology, greatly improving the bonding force between the selection layer and the support layer, and enhancing

the mechanical stability and service life of the membrane wire. With molecular weight cut-off (MWCO) around 400 Da, it can be widely used in household water purification and municipal water treatment. Characteristics: High chlorine resistance; Excellent antibacterial properties; Fiber robustness; Backwashing feasibility; High filling density; High flux; Low operating costs; Low energy consumption.

Characteristics: High chlorine resistance; Excellent antibacterial properties; Fiber robustness; Backwashing feasibility; High filling density; High flux; Low operating costs; Low energy consumption



Application: The membrane is suitable for desalination treatment of surface water, groundwater, tap water, industrial water, and municipal water, as well as wastewater reuse, material concentration, and separation of divalent and divalent salts.

Product Parameters

Inner and Outer Diameter (mm)	0.5/0.9
Pore Radius (nm)	0.4
MWCO (Da)	400
PWP(LMH/bar)	7-8

 

Model	HNF-W-1812-400	HNF-W-3040-400	HNF-W-2860-400	HNF-W-2880-400
Effective Membrane Area ft²(m²)	9.7(0.9)	118.0(11.0)	715.8(66.5)	970.9(90.2)
Ave.Permeate GPD (m³/d)	~240(-0.9)	~2932(~11.1)	~17726(-67.1)	~24043(~91.0)
Stable Rejection	~90%(1000  ppm  MgSO4)    ~90%(200 ppm PEG400)
Chlorine-resistance (ppmh)	>300000 ppmh
Testing Conditions: All data is collected under operating pressure of 0.69 MPa,20ºC, and pH7.
Usage Conditions: Max. operating pressure:218 psi, Max.operating temperature:45ºC,pH value range of feed water during continuous operation:2-13,Allowable concentration of free chlorine:<500 ppm
Notes:1.The permeate flow of a single membrane element may vary within the range of±15%;2.Backwashing pressure≤0.2 Mpa.

*The above parameters serve as reference values, and element parameters should be appropriately adjusted based on specific operational conditions.

*Please note that the company's products undergo continual optimization, and actual performance data may vary from those presented in the product catalog. Nanjing Weihua Membrane Technology Co., Ltd. reserves the final interpretation rights.

Nanofiltration Membrane
Customized Preparation of High-precision NF Membranes

* "Molecular Encapsulation" Technology

Drawing inspiration from controlled-release mechanisms in pharmaceuticals, the company pioneered the concepts of "molecular encapsulation" and "nanocapsules" in membrane technology. By encapsulating functional modifiers and orchestrating their release at precise intervals, we can achieve synchronized structural adjustments and functional enhancements in membranes.
By leveraging the innovative "Molecular Encapsulation" Technology, precise control over membrane pore size and charge enables the tailored production of nanofiltration membranes for effective ion separation across various systems.

High-performance Hollow Fiber NF Membranes

* Hierarchical Structure Synchronous Construction Technology
Commencing with an exploration of polymer chemical structures, molecular simulations, and solubility parameter calculations were employed to quantify polymer compatibility. This approach theoretically overcomes the challenge of interface compatibility in bilayer membranes. Through co-extrusion and the integration of composite structures from two different materials, a significant reduction in membrane material costs and streamlined membrane preparation processes have been achieved.

* Solve interface compatibility issues and ensure stable operation under harsh conditions
* Significantly simplify the membrane preparation process

Successful Cases

Life and Health Field Cases

-Water Purification
To address significant variations in surface water quality across regions, our company has designed a household water purification membrane product that customizes NF membranes based on water quality. Our product offers both flat spiral-wound membrane elements and hollow fiber membrane elements.

Treatment Objective:
Removal of calcium ions, magnesium
ions, and heavy metals from water


Product Model: MNF-1812 HNF-W-1812-400


Feed Water Quality: Surface water


Rejection of Divalent Salt :>98%


Effluent Quality: Better than national standards

Effective Removal of Antibiotics

Excellent Long-term Stability

 

Application Area

Application Range:

Applicable to laboratory pure water machine, high-purity water preparation in the electronic chemical industry, water softening, seawater desalination, precious metal recovery, COD ammonia nitrogen removal, fermentation liquid concentration, drinking water treatment
Salt lake lithium extraction, high-salt wastewater resource utilization, landfill leachate, biomedicine, pesticide wastewater treatment, coal chemical wastewater treatment, household water purification, municipal water treatment

 

FAQ

Q1: What are the features of NF?
Highly Precise Separation
Low Energy Consumption
Convenient Operation
Fouling resistant
Long service life

Q2: What service is available in your company?
The products cover NF membrane elements and processes with various materials and MWCOs. Weihua provides solutions based on NF membranes for wastewater recycling, material separation, etc. globally. Our service covers multiple fields such as the chemical industry, biomedicine, environmental protection, and energy. Our products are applied in household water treatment, municipal water treatment, lithium extraction from salt lakes, zero discharge of high salt wastewater, purification and concentration of high-value products, organic solvent recovery, and material separation under harsh acid systems. We undertake sewage treatment and zero discharge resource utilization projects in the pharmaceutical, electronics, food, textile, papermaking, and landfill leachate treatment industries.

Q3: What does the Salt Rejection Ratio mean?
The Salt rejection describes the quality of salt removed from the NF membrane feed water stream as a percentage. It's one of the key elements of the NF membrane quality, however, other essential elements such as NF membrane performance durability, stability, application scope in different regions, and permeate flow output at the same pressure will all be important factors to judge the quality of the membrane.

Q4: How to select NF?
Firstly, check for the presence of corrosive substances, such as solvents, acids, and bases, in the separation system. If any are found, it is necessary to select special separation membranes. Next, determine the size of the substance to be separated and accordingly choose from the available NF membranes, categorized as LNF (large), MNF (medium), and SNF (small) models.

Q5: Under what circumstances can hollow fiber NF membranes be chosen?
High presence of organic contaminants
High residual chlorine content
Limited factory space
Municipal tap water treatment

Q6: What are the precautions when using NF?
1. Before use, pre-treatment is necessary to reduce fouling, scaling, and membrane degradation, thereby enhancing the operational efficiency of NF membrane elements.

2. Before use, the system should be flushed with purified water or product water for approximately 30 minutes.

3. The NF membrane elements are shipped with stored preservative solution, which consists of a sodium bisulfite (NaHSO3) water solution with a concentration of 0.5-1%. The pH value of the preservative solution should be tested every month, and if the pH≤3, the preservative solution should be promptly replaced.

4. Membrane components that are temporarily not in use should be sealed after being filled with a preservative solution. They should be stored in a flat, clean area on the ground, free from corrosive and contaminating substances, and kept away from indoor cold and heat sources. The storage environment temperature should be controlled within the range of 5-40ºC, with the recommended optimal storage temperature being 15-30ºC

Q7. Are you a factory?
Yes, we are not only just a factory but also have a professional service team, that includes sales, technical staff, QC, after-sales staff, etc.

Q8. How about your delivery time?
Generally, it will take one week after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q9. Do you test all your goods before delivery?
Yes, we have 100% test before delivery.