The inorganic ceramic membrane is a precision ceramic filter material having a porous structure formed by sintering at a high temperature such as alumina, titania or zirconia. The porous support layer, the transition layer and the microporous membrane layer are asymmetrically distributed, and the filtration precision covers microfiltration, ultrafiltration and even nanofiltration. Ceramic membrane filtration is a fluid separation process in the form of “cross-flow filtration”: the raw material liquid flows at high speed in the membrane tube, and the clarified permeate containing small molecular components is driven through the membrane in a direction perpendicular to the pressure driven by the pressure. The turbid concentrate of the macromolecular component is trapped by the membrane, thereby allowing the fluid to be separated, concentrated, and purified.
Inorganic ceramic membranes based on inorganic materials science have some advantages over traditional separation media such as plate frames, centrifuges, diatomaceous earth and polymer membranes:
1. Excellent chemical stability, acid, alkali and oxidation resistance;
2. Resistant to organic solvents, high temperature resistance;
3. High mechanical strength and good wear resistance;
4. The pore size distribution is narrow, the separation precision is extremely high, and the nanometer filtration can be achieved;
5. Easy to clean, can be backwashed online, acid and alkali cleaning.