Multi-functional flat-sheet ceramic film and preparation process thereof

Abstract

The invention provides a preparation process of a multi-functional flat-sheet ceramic film. The preparation process comprises the following steps: S1, producing a flat-sheet ceramic film supporting body by adopting an extrusion moulding method; and S2, preparing the multi-functional flat-sheet ceramic film by adopting a vacuum impregnation method. The invention further provides the multi-functional flat-sheet ceramic film. The multi-functional flat-sheet ceramic film provided by the invention has the benefits that the prepared multi-functional flat-sheet ceramic film not only has a filtering capacity, but also has other functions of catalyzing, oxidizing and the like; the production cost is lowered to a great extent and the flux can be set at a relatively high level; film polluting performance and recoverability are remarkably improved; and the size of the film holes is easily controlled.

Description

Technical field [0001] The invention relates to a preparation process of a ceramic membrane, in particular to a multifunctional flat ceramic membrane and a preparation process thereof. Background technique [0002] Most of the membranes used in water treatment are polymer organic membranes (mainly PVDF, PVC, PES, etc.), but organic membranes are usually poor in anti-oxidation and anti-pollution capabilities, which limit their application scope, such as drinking water treatment It is difficult to combine with ozone, the sewage treatment flux is low and declines quickly, and it is difficult to apply to special industrial water treatment fields with complex water quality. Compared with organic membranes, ceramic membranes have advantages in many aspects. For example, they are made of alumina with good hydrophilicity, have low transmembrane pressure difference and are not easy to be polluted by organic matter; are resistant to acid and high temperature, and are not easy to produce me...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the ceramic membranes produced at home and abroad are tubular filtration membranes, and the pore size is generally about micron. These products have high production costs and are often used in the chemical or food fields. In order to reduce investment, the flux design is high, energy consumption is large, membrane pollution Large; the size of the membrane pores is difficult to directly and visually inspect, and is not suitable for the field of environmental protection; the ceramic membrane only has a filtering function, and it is difficult to combine it with advanced oxidation technologies such as ozonation, catalysis, and anti-pollution, and cannot perform more functions. Limited ability to remove sexual or trace organics