Oxidation resistant nanofiltration membrane components

Release time：2025-04-01 Click:

Nanofiltration (NF), with a membrane pore size of less than 2 nanometers, has a high retention rate for most organic compounds and multivalent salt ions in water. The amide bond (- CO-NH -) in conventional polyamide nanofiltration membranes contains active hydrogen, which is easily attacked by active gases (such as NaCl0), causing degradation of the separation layer structure of the nanofiltration membrane and loss of membrane separation performance. Therefore, there is an urgent need to develop oxidation resistant nanofiltration membranes in the industry.

Polyester film material does not contain active hydrogen and has excellent chlorine resistance, which can be used to prepare oxidation resistant nanofiltration membranes. Oxidation resistant nanofiltration membranes can maintain stable performance in oxidative environments or in the presence of oxidants. Treating wastewater containing oxidizing substances, wastewater systems that require frequent cleaning with oxidants, and separation processes that require antioxidant properties, resistant to oxidation

The filter membrane has significant advantages. Shandong Jinyu Membrane Technology Development Co., Ltd.'s oxidation resistant nanofiltration membrane components have undergone special treatment and preparation processes to improve their oxidation resistance. Tested with sodium hypochlorite aqueous solution, the oxidation resistance is>500000 ppm. Based on the retention rate of sodium chloride, a series of nanofiltration membrane module products such as 5%, 20%, and 40% have been developed, and suitable solutions have been provided according to the actual needs of customers to achieve the optimal process for the design of oxidation resistant nanofiltration membrane separation.

Product specifications:

1. The test data is based on the following test conditions: the test solution is a 2000 ppm NaCl aqueous solution, a 1000 ppm MgS04 aqueous solution, at 25 ℃, pH7.5, The system recovery rate is 15%.

2. The water production and desalination rate of the nanofiltration membrane module are the average values, and the error of the water production of a single membrane module is within 10%.

3. The recommended maximum operating pressure for nanofiltration membrane components is 4.0 MPa. Consult in advance for higher usage pressure.

Application areas:

Nanofiltration membranes have the following advantages: high water recovery rate, reduced concentration of wastewater; Low operating pressure reduces energy consumption in water treatment systems; Low operating cost and not easily damaged. The application fields of oxidation resistant nanofiltration membranes include water treatment, food and beverage processing, pharmaceuticals, etc.

1. Deep treatment and resource utilization of sewage

In the deep treatment and resource utilization of sewage, oxidation resistant nanofiltration membranes can be used to remove harmful substances and improve water quality. High concentration oxidants can be used to quickly clean membrane fouling and restore the performance of nanofiltration membranes.

2. Surface water removal of organic matter and chromaticity

Surface water removes organic matter and color. ORNF-20 and ORNF-40 nanofiltration membranes can be selected, with high permeate flux, low water production energy consumption, high organic matter removal rate and chromaticity removal rate.

3. Oil water separation, printing and dyeing wastewater, garbage leachate, etc

Processes such as oil-water separation, printing and dyeing wastewater, and leachate from garbage require deep removal of COD. ORNF-20 and ORNF-40 nanofiltration membranes can be selected, with high permeate flux, high COD removal rate, and low water production energy consumption.

4. Concentrate, separate and recover glucose, fructose and other substances

Concentrate, separate, and recover glucose, fructose, and other substances. ORNF-20 and ORNF-40 nanofiltration membranes are available for selection, with high permeate flux and high efficiency in concentration, separation, and recovery of glucose and other substances.

Oxidation resistant nanofiltration membrane is a type of membrane with specific properties, suitable for separation and filtration applications in oxidizing environments, as well as deep pollution systems. Its development and application help improve separation efficiency, reduce energy and material consumption, ensure product quality, and meet the needs of using oxidants for cleaning.

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