1. The main functions of silicon carbide ceramic membrane: including separation, concentration, purification and clarification, etc., of which separation is fundamental, and the core lies in the control and selection of membrane pore size.

2. Silicon carbide ceramic film product specifications and models

(Silicon carbide membrane tube selection, please consult the company's professional and technical personnel)

3. Structural characteristics of silicon carbide ceramic membrane

(1) Multi-channel tubular structure design: using the fluid separation process in the form of "cross-flow filtration", the raw material liquid flows at high speed in the membrane tube, and the clear permeate containing small molecular components penetrates the membrane outward along the perpendicular direction driven by pressure, and the turbid concentrate containing macromolecular components is intercepted by the membrane, so that the fluid achieves the purpose of separation, concentration and purification. The liquid flow direction is tangent to the membrane surface, the temporary cover of the membrane surface will be carried away by the fluid, the biggest advantage of the membrane equipment using cross-flow separation technology is that the membrane is not easy to foul, and the equipment can run stably for a long time.

(2) Asymmetric structure design: improve the effect of backwashing process, high-frequency backwashing process in process design can wash away pollutants on the membrane surface, restore its filtration function, ensure long-term stable operation of the equipment, and extend the membrane cleaning cycle.

4. Technical characteristics of silicon carbide ceramic membrane products

(1) Advanced ceramic firing technology

Silicon carbide ceramic microfiltration and ultrafiltration membrane are recrystallized and sintered at a high temperature of 2400 °C. The recrystallization technology makes the surface of silicon carbide crystal particles smooth and rounded, and the support layer, transition layer and separation layer have no closed pores and channels, forming an asymmetric membrane structure.

(2) The world's leading silicon carbide nanocoating technology

The use of self-designed automatic coating device to ensure that the thickness of each film layer is uniform, the thickness of the film layer is about 120μm, compared with the traditional oxide ceramic 20μm, with higher wear resistance, the film formula design is optimized, so that the film layer has a higher water flux, which is 3-5 times that of ordinary ceramic membrane, lower pressure loss, normal use of transmembrane pressure difference of 1 bar.

(3) High-precision comprehensive membrane product testing process

Each membrane of Dijie factory has been tested several times, length, diameter, verticality need to be tested, after passing the code, the maximum pore size is not less than 3 times, and finally marked with the pore size code to ensure the safety and stability of membrane classification, the process ensures the reliability of the membrane of each factory.

5. Advantages of silicon carbide ceramic membrane products: high temperature resistance, strong acid resistance, strong alkali resistance, organic solvent resistance, corrosion resistance, good oil-water separation performance, large flux, easy cleaning, wear resistance, long service life.

(1) High material reliability

The support body and membrane materials are pure silicon carbide, fired by recrystallization process at 2400°C, with a purity of > 99%, and do not contain any other toxic impurities;

The hydrophilicity is extremely high, the contact angle with water is close to 0°, and the filtration pressure loss is extremely low;

High mechanical strength, pressure resistance > 10 kg, never broken wire problem.

(2) Strong chemical stability

Extreme antioxidant capacity – unlimited concentration; Chlorine resistance - unlimited concentration; Fluoride resistant - unlimited concentration;

Extreme pH and temperature tolerance — unlimited concentration of acids and alkalis, temperature resistance up to 800°C;

Extremely resistant to oil contamination – unlimited concentration;

Superior chemical cleaning recovery — Under extreme contamination conditions, high concentrations of chemicals can be used to continuously clean and the permeability can still be restored.

Silicon carbide (SiC) membranes are advanced filtration solutions widely used in ultrafiltration, microfiltration, and industrial wastewater treatment. Made from durable SiC materials, these membranes offer excellent chemical, thermal, and mechanical resistance, enabling operation under harsh conditions such as high temperatures, strong acids, or alkalis.

SiC membranes provide precise pore size control for efficient removal of suspended solids, bacteria, colloids, and other contaminants. Their high permeability and low fouling properties reduce energy consumption and maintenance requirements.

These membranes are ideal for municipal water treatment, chemical processing, food and beverage production, and other industries requiring reliable, long-lasting filtration. Their rigid structure allows for backwashing and chemical cleaning, ensuring consistent performance and extended service life.