Structure and Performance of Ceramic Membranes

What is Chinese Ceramic Membrane

Membrane separation technology is a new high-efficiency separation technology that uses the selective separation function of the membrane to achieve the separation, purification, and concentration of different components of the material. According to the different membrane materials, the membrane materials used in membrane separation can be divided into inorganic membranes (ceramic membranes) and organic membranes.

Among them, Chinese Ceramic Membrane is a high-performance membrane material made of inorganic ceramic materials with special selective separation functions. With its high separation efficiency and precision, good chemical stability, resistance to acid and alkali, high temperature resistance, resistance to organic solvents, and high mechanical strength, it shows good applicability in the process industrial separation and special water treatment fields under harsh environments such as high temperature, solvent, and reaction systems, becoming an important variety with great development prospects among membrane materials. With the industrial technological upgrading of process industries and the increasing investment in "energy saving, emission reduction" and water resource protection, the application prospects and market space of membrane separation technology with  Chinese Ceramic Membrane as the core are very broad.

Chinese Ceramic Membranes and Their Structure

Chinese Ceramic Membrane is a membrane made of powder materials such as alumina (Al2O3), zirconia (ZrO2), and titania (TiO2) through a special process. The walls of the ceramic membrane tube are densely packed with micropores, and under pressure, the raw material fluid flows on the outer side of the membrane inside the tube. Small molecules (or liquids) pass through the membrane, while large molecules (or solid particles, liquid droplets) are intercepted by the membrane, thereby achieving the purpose of separating, concentrating, and purifying different components of the material liquid.

From a structural perspective, Chinese Ceramic Membrane generally consists of a support layer, transition layer, and membrane layer to form a non-symmetric structure. The support layer constitutes the main structure of the ceramic membrane, providing the necessary mechanical strength for the membrane layer. It has a high porosity and larger average pore size, which are the main factors determining the mechanical strength, chemical stability, and other properties of the ceramic membrane; the membrane layer is a dense ceramic film formed by coating the surface of the transition layer through sintering, typically with a thickness of several tens of microns. By using different ceramic powder materials and sintering processes, the pore size, pore distribution, and other characteristics of the membrane layer can be adjusted, thereby controlling the filtration range, separation precision, and other functional indicators of the Chinese Ceramic Membrane; the transition layer is a transition structure between the membrane layer and the support layer, preventing ceramic powder from the membrane layer from penetrating into the support layer, and helping the membrane layer and the support layer bond better.

Excellent Performance and Easy Maintenance of Chinese Ceramic Membranes

• Strong mechanical performance: Chinese ceramics membrane has high mechanical strength, can withstand pressures above 3Mpa, will not deform under high pressure, and is resistant to high-speed scouring and wear, facilitating backwashing and cleaning, ensuring stable water quality in long-term operation;

• High chemical stability: Chinese ceramics membrane is resistant to acids and alkalis, strong oxidants, high temperatures, organic solvents, and cleaning agents, and can be used stably in working environments below 800℃, making it suitable for high-temperature, high-viscosity fluids;

• High hydrophilicity: Chinese ceramics membrane has a high single-component water yield, effectively reducing investment and operating costs;

• High filtration accuracy: Chinese ceramics membrane can achieve nanometer-level filtration, effectively removing particulates, colloids, microorganisms, trace organic substances, and other pollutants from water;

• Long lifespan: Chinese ceramics membrane has low comprehensive investment cost over its entire life cycle;

• Strong anti-fouling performance: Chinese ceramics membrane has good anti-fouling performance, ensuring stable flow during long-term operation with low cleaning frequency;

• High filtration efficiency: Chinese ceramics membrane adopts a large-diameter honeycomb integrated design, providing uniform hydraulic distribution and high operational efficiency;

• High porosity of support layer: Ensures high filtration and backwashing flux, achieving high filtration and backwashing efficiency;

• Low operating cost: Chinese ceramics membrane system requires low pretreatment, reducing total system investment and operating costs;

• Easy to install: The standard modular design reduces system pipeline investment costs;

• Can be used for food-grade: Chinese ceramics membrane has strong safety performance and holds a drinking water sanitation safety product hygiene permit.