Making process of efficient flat ceramic membrane

Abstract

The invention discloses a making process of an efficient flat ceramic membrane. The making process includes: making a flat ceramic membrane supporting body; preparing the efficient flat ceramic membrane, wherein nano-silver is added during preparation of the efficient flat ceramic membrane. The making process has the advantages that by adding the nano-silver, the efficient flat ceramic membrane has disinfecting and sterilizing effects, thereby having better filtering effect; through pug milling in a vacuum pugmill, influence of gravity on materials can be eliminated to sufficiently mix the materials, so that uniformizing of the materials at all positions of pug is facilitated, and the made flat ceramic membrane supporting body is high in quality; by using alumina as a main raw material for sintering to prepare the flat ceramic membrane supporting body, performance stability of the ceramic membrane supporting body can be improved, and enough strength of the supporting body can be ensured while light weight is realized.

Description

technical field [0001] The invention relates to the field of preparation of ceramic membranes, in particular to a manufacturing process of high-efficiency flat ceramic membranes. 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 oxidation resistance and anti-pollution ability, which limits their application range, such as in drinking water treatment It is difficult to combine with ozone, the sewage treatment flux is low and drops rapidly, 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, such as being made of alumina with good hydrophilicity, low transmembrane pressure difference, and not easily polluted by organic matter; acid-resistant and high-temperature resistant, not easy to produce membrane fouling, greatly ...

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