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Ceramic flat membrane for sewage treatment and preparation method of ceramic flat membrane

A sewage treatment, flat membrane technology, applied in the direction of osmosis/dialysis water/sewage treatment, chemical instruments and methods, membranes, etc., can solve the problems of low filtration efficiency and unsatisfactory filtration effect, and achieve increased filtration efficiency and space utilization efficiency The effect of improving and improving the filtration efficiency

Inactive Publication Date: 2018-07-06
成都科达环保产业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a ceramic flat membrane for sewage treatment, which is used to solve the problems of unsatisfactory filtering effect and low filtration efficiency of the existing ceramic flat membrane described in the background technology for sewage treatment; the present invention also provides A method for preparing a ceramic flat membrane for sewage treatment is proposed, which is used to manufacture a ceramic flat membrane that can be used for sewage treatment

Method used

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  • Ceramic flat membrane for sewage treatment and preparation method of ceramic flat membrane

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Effect test

Embodiment 1

[0024] In the preparation method of the ceramic flat membrane for sewage treatment of the present invention, the α-alumina, titanium oxide, and silicon oxide powder particles form a mixture in any ratio, and the total mass is 100 kg. ㎏, pore former 0.8㎏, distilled water 2㎏; ceramic powder 15㎏ (ceramic powder is a mixture of alumina, zirconia and titanium oxide in a weight ratio of 3:1:1), organic additives 0.5㎏, to Ionized water 40㎏ is prepared according to the following steps:

[0025] Put α-alumina, titanium oxide, and silicon oxide powder particles into the mixer to fully mix for 16 minutes to form a powder-particle mixture, then add pore former, hydroxyethyl cellulose and distilled water for 42 minutes, and mix the mixed mud After being extruded, the mixture is naturally air-dried for 72 hours, heated to 1350°C in an electric furnace and kept for 35 minutes, and sintered to form a ceramic flat membrane support 2;

[0026] Put the ceramic powder, organic additives, and deionize...

Embodiment 2

[0029] In the preparation method of the ceramic flat membrane for sewage treatment of the present invention, the α-alumina, titanium oxide, and silicon oxide powder particles form a mixture in any proportion, and the total mass is 80 kg, and the hydroxyethyl cellulose is 0.8 ㎏, pore former 0.64㎏, distilled water 1.6㎏; ceramic powder 12㎏ (ceramic powder is a mixture of alumina and titanium oxide in a ratio of 4:1 by weight), organic additive 0.4㎏, deionized water 32㎏ according to Follow the steps below to prepare:

[0030] Put α-alumina, titanium oxide, and silicon oxide powder particles into the mixer and mix thoroughly for 13 minutes to form a powder-particle mixture, then add the pore former, hydroxyethyl cellulose and distilled water for 40 minutes, and mix the stirred mud After being extruded, the mixture is naturally air-dried for 75h, heated to 1350°C in an electric furnace and kept for 40 minutes, and sintered to form a ceramic flat membrane support 2;

[0031] Put the cera...

Embodiment 3

[0034] In the preparation method of the ceramic flat membrane for sewage treatment of the present invention, the α-alumina, titanium oxide, and silicon oxide powder particles form a mixture in any ratio, and the total mass is 10 kg, and the hydroxyethyl cellulose is 0.1 ㎏, pore former 0.08㎏, distilled water 0.2㎏; ceramic powder 1.5㎏ (ceramic powder is a mixture of zirconia and titanium oxide in a ratio of 1:1 by weight), organic additives 0.05㎏, deionized water 6㎏ according to Follow the steps below to prepare:

[0035] Put the α-alumina, titanium oxide, and silicon oxide powder particles into the mixer to fully mix for 18 minutes to form a powder-particle mixture, then add the pore former, hydroxyethyl cellulose and distilled water for 38 minutes, and mix the mixed mud After being extruded, the mixture is naturally air-dried for 70 hours, heated to 1350°C in an electric furnace and kept for 20 minutes, and then sintered to form a ceramic flat membrane support 2;

[0036] Put the ...

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Abstract

The invention discloses a preparation method of a ceramic flat membrane for sewage treatment, and relates to the field of ceramic flat membrane technology processing technology. The ceramic flat membrane is prepared by the following steps: putting alpha-alumina particles, titanium oxide particles and silicon oxide particles into a mixer to be fully mixed for 10-20min, forming a powder mixture, andthen adding a pore-forming agent, hydroxyethyl cellulose and distilled water for stirring for 30-45min, wherein the weight ratio of the powder mixture to the pore-forming agent to the hydroxyethyl cellulose to the distilled water is 10:0.8:1:2; carrying out extrusion forming on a paste mixture after stirring; carrying out natural drying for 70-80h; putting the mixture into an electric heating furnace, heating the mixture to 1350 DEG C, and keeping the temperature for more than 20 min; carrying out sintering to form a support body of the ceramic flat membrane; and carrying out drying and sintering by repeatedly dip-coating a suspension. The invention provides a ceramic flat membrane which comprises a support body, a separation membrane and a fluid channel, wherein the cross-sectional areaof the fluid channel is cross-shaped, and the ceramic flat membrane has the advantages of strong corrosion resistance, good filtering effect and long service life.

Description

Technical field [0001] The invention relates to the technical processing field of ceramic flat membranes, in particular to a ceramic flat membrane used for sewage treatment and a preparation method thereof. Background technique [0002] Ceramic membrane (ceramic membrane), also known as inorganic ceramic flat membrane, is an asymmetric membrane formed by inorganic ceramic materials prepared by a special process. The ceramic flat membrane tube wall is densely covered with micropores. Under pressure, the raw material liquid flows in the membrane tube or outside the membrane, small molecular substances (or liquid) permeate the membrane, and macromolecular substances (or solids) are retained by the membrane to achieve separation and concentration. , Purification and environmental protection. Ceramic flat membrane has high separation efficiency, stable effect, good chemical stability, acid and alkali resistance, organic solvent resistance, bacteria resistance, high temperature resist...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D69/06B01D69/02B01D67/00C02F1/44
CPCB01D67/0039B01D69/02B01D69/06B01D71/02B01D2311/2649B01D2325/021C02F1/44
Inventor 彭玉梅陈科西陈婷婷章太永杨开虎任逸汪锐邱恋
Owner 成都科达环保产业技术研究院有限公司