Novel high-flux filtering device and using method thereof

Abstract

The invention discloses a novel high-flux filtering device and a using method thereof. The novel high-flux filtering device comprises a membrane element, the membrane element comprises a cylindrical support body, a columnar inner cavity channel is formed in the center of the supporting body in the axial direction, a supporting layer is formed between the inner cavity channel and the outer layer ofthe supporting body, an inner membrane layer is arranged on the inner wall of the supporting layer, an outer membrane layer is arranged on the outer wall of the supporting layer, and two or more layers of raw material liquid filtering channels distributed in an asymmetric structure are arranged in the supporting layer in the axial direction. By increasing the inner cavity channels of the membraneelement, the permeation area of the membrane element is increased, the ratio of the circulating flow to the seepage amount of the permeable membrane is reduced, and the permeation performance of theceramic membrane element is remarkably improved. According to the quality condition of water needing to be purified, the optimal permeability is achieved and the permeability is improved through the adjustment of the filtering precision of the inner membrane layer and the outer membrane layer and the reasonable configuration of the size of a raw material liquid filtering channel.

Description

technical field [0001] The invention relates to the technical field of research and development of tubular ceramic membranes, in particular to a novel high-flux filtration device and a method for using it. Background technique [0002] Ceramic membrane is a separation medium with screening performance manufactured by sintering ceramic powder. Compared with earlier industrialized polymer separation membranes, inorganic separation membranes have the advantages of narrow pore size distribution, good separation performance, high temperature resistance, stable chemical properties, no corrosion by organic solvents and bacteria, acid and alkali cleaning, and high mechanical strength. Strong, non-deformable, high-pressure recoil, hot steam regeneration, backwashing, etc. The ceramic membrane separation element is generally prepared on a macroporous support body with one or more layers of asymmetric pore structure, which is a porous structure separation material. It has been widely ...

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Problems solved by technology

It can be seen that the circulation flow is 185.6 times of the seepage flow through the membrane, which consumes a lot of energy

[0005] It can be seen from the above examples that the permeation flux rate of cross-flow filtration is not high, the effective water filtration area is small, and the equipment investment and operation costs are high, which cannot effectively save energy consumption and increase fluid flux.

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