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Ceramic filter film of rare-earth modified attapulgite with nano coating and preparation method thereof

An attapulgite and nano-coating technology is applied in the field of rare earth modified attapulgite nano-coating ceramic filter membrane and its preparation, which can solve the problems of easy cracking and falling off of the membrane layer, poor surface performance, etc. The effect of shedding, light weight and easy cleaning

Inactive Publication Date: 2012-08-01
SHANGHAI MARITIME UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN102179184A discloses a preparation method of a ceramic microfiltration membrane using attapulgite nanofibers as the separation layer, but the nano attapulgite coating without modifier inevitably has poor surface properties and easy membrane layer Defects such as cracking and falling off

Method used

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  • Ceramic filter film of rare-earth modified attapulgite with nano coating and preparation method thereof
  • Ceramic filter film of rare-earth modified attapulgite with nano coating and preparation method thereof
  • Ceramic filter film of rare-earth modified attapulgite with nano coating and preparation method thereof

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Embodiment Construction

[0035] In order to make the technical means, creative features, achievement goals and effects realized by the present invention easy to understand, the present invention will be further described below with reference to the specific embodiments.

[0036] like figure 1 As shown, the rare earth modified attapulgite nano-coated ceramic filter membrane of the present invention comprises a ceramic support body 1 and a separation membrane 2 arranged on the surface of the ceramic support body, and a hollow cavity 3 is arranged inside the ceramic support body, The bottom end of the ceramic support body is provided with an outflow nozzle 4, and the outflow nozzle communicates with the hollow cavity.

[0037] like figure 2 and image 3As shown in the figure, the ceramic support body is formed by sintering two ceramic blanks, the negative plate A and the positive plate B, which are made respectively. Its shape is a 60° sector, the radius of the sector is 35mm, the thickness of the ba...

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Abstract

The invention discloses a ceramic filter film of rare-earth modified attapulgite with a nano coating, which comprises a ceramic supporting body and separation film, wherein the ceramic supporting body is plate-type porous ceramic sintered by modifier added with rate-earth oxide in attapulgite clay and intensifier, the ceramic supporting body has the characteristics of high porosity, uniform pore diameter, high strength, light weight and the like; the separation film is a nano decoration coating, and has outstanding hydrophilicity and lipophobicity. The coating film liquid is produced by nano attapulgite mixing with nano rare-earth oxide and relevant additive dispersing in water, coated on the ceramic supporting body surface via a soak-lifting method, and is sintered at high temperature to form porous separation film with nano surface characteristics; the ceramic filter film can be made into a hollow cavity-type structure, a plurality of combined revolving film components are used in rotary manner, more efficient initiative cross-flow operation can be realized, the film surface is self-cleaned by filter liquid brushing in the revolving process, and the blockage and pollution of the film can be greatly delayed.

Description

technical field [0001] The invention relates to the technical field of membrane separation and water treatment, in particular to a rare earth modified attapulgite nano-coating ceramic filter membrane and a preparation method thereof. Background technique [0002] Membrane technology has received unprecedented attention on a global scale, and the membrane industry is known as a sunrise industry with huge development potential. As a cross-combination and mutual penetration of many disciplines such as materials science and process engineering, membrane technology has become a common technology that promotes the development of China's four pillar industries of environmental protection, energy, chemical engineering and biological engineering. [0003] Membrane materials are the core of membrane technology. Membrane materials currently used in the industrial field include two categories: organic polymer membrane materials and inorganic membrane materials. Compared with organic po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/10B01D71/02B01D67/00C04B38/02
Inventor 耿安朝廖德祥周炳生刘源
Owner SHANGHAI MARITIME UNIVERSITY
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