Ceramic Membrane Element

Ceramic Membrane Elements (Inorganic Ceramic Membranes)

Ceramic membrane elements are asymmetric porous separation components sintered at high temperatures from inorganic ceramic materials such as Al₂O₃, ZrO₂, and TiO₂. They serve as the core components for industrial membrane separation processes.

Structure and Morphology

1. Three-layer Asymmetric Structure: Porous support layer (macroporous, structural skeleton), intermediate layer (gradient pore size), and ultra-thin separation layer (determines filtration precision, available in microfiltration/ultrafiltration/nanofiltration grades).

2. Mainstream Morphology: Multi-channel tubular type (single tube with multiple inner bores); flat sheet type is also available. Common Material: α-Al₂O₃. High-end Material: Zirconia (ZrO₂) for enhanced corrosion resistance and mechanical strength.

Core Principles and Performance

1. Pressure-Driven Cross-Flow Filtration: The feed liquid flows tangentially at high speed along the membrane surface. Small molecules permeate the membrane, while macromolecules or particles are retained. Flux can be restored via backwashing.

2. Exceptional Chemical & Thermal Resistance: Tolerates strong acids and alkalis (pH 0–14), high temperatures (typically 100–150°C), and organic solvents. It features high mechanical strength and is resistant to microbial degradation.

3. Narrow Pore Size Distribution: Ensures stable and precise separation performance.

Key Applications

• Water Treatment: Industrial wastewater treatment, municipal sewage MBR systems, and drinking water sterilization.

• Food & Beverage: Fruit juice clarification, dairy product sterilization, and fermentation broth filtration.

• Biopharmaceuticals: Extraction and purification of traditional Chinese medicine, and concentration of biological preparations.

• Chemical Industry: Catalyst recovery and solvent purification.

Advantages

Long service life, excellent fouling resistance, high cleaning recoverability, and outstanding chemical/thermal stability.

Ceramic Membrane Tube Models