Micropore filtering pipe and manufacture method thereof, and tubular micro filtering membrane and manufacture method thereof

Abstract

The invention discloses a micropore filtering pipe and a manufacture method thereof as well as a tubular micro filtering membrane made by the micropore filtering pipe and a manufacture method of the tubular micro filtering membrane, belongs to the technical field of filtration, and provides the micropore filtering pipe capable of filtering special media selectively and the tubular micro filtering membrane. The micropore filtering pipe is characterized in that an electrode lead is arranged between the inner wall surface and the outer wall surface of the pipe wall of the micropore filtering pipe. In the using process, the electrode lead is connected with a power supply, so that a comprehensive effect capable of generating multiple mechanisms such as an electric field, electrophoretic migration, agglomeration and electrolysis is achieved by the micropore filtering pipe or the tubular micro filtering membrane, and special media, such as particles and microorganisms with electrical properties or magnesium can be filtered; moreover, as the micropore filtering pipe is adopted for the tubular micro filtering membrane as a supporting framework, the tubular micro filtering membrane is high in structural intensity, and the embedded type connecting structure between filtering membrane layers and the supporting framework can improve the connection relationship among the filtering membrane layers.

Description

technical field [0001] The invention relates to the technical field of filtration, in particular to a microporous filter tube and a preparation method thereof, a tubular microfiltration membrane made by using the microporous filter tube, and a preparation method of the tubular microfiltration membrane. Background technique [0002] At present, most of the tubular microfiltration membranes on the market are composed of non-woven fabrics and adhesives as a supporting framework, which is limited by the material of the non-woven fabrics, with low overall strength and easy deformation; It is only scraped on the surface of the support frame to form a layer of filter membrane. The bonding strength between the membrane and the support frame in this way is low, resulting in the filter layer being easily damaged and falling off, and the tubular microfiltration membrane produced in this way Generally, it is not possible to carry out backwash operation, which causes troublesome cleaning...

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Problems solved by technology

[0002] At present, most of the tubular microfiltration membranes on the market are composed of non-woven fabrics and adhesives as a supporting framework, which is limited by the material of the non-woven fabrics, with low overall strength and easy deformation; It is only scraped on the surface of the support frame to form a layer of filter membrane. The bonding strength between the membrane and the support frame in this way is low, resulting in the filter layer being easily damaged and falling off, and the tubular microfiltration membrane produced in this way Generally, backwashing operation cannot be performed, which causes troublesome cleaning of the tubular microfiltration membrane. The filter cake formed after a long time of use will affect the filtration effect and seriously affect the service life of the tubular microfiltration membrane.

[0003] In addition, in the prior art, whether it is a microporous filter tube or a tubular microfiltration membrane, the filtration effect is only determined by the pore size used for filtration, and the filtration is mainly achieved through physical barriers; Filter equipment with optimized design for the filtration of special media such as electrical or magnetic particles or microorganisms. Therefore, the existing microporous filter tubes or tubular microfiltration membranes have poor filtration effects on the above-mentioned special media, and cannot realize the filtration of special media. selective filtering

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