Antibacterial microporous ceramic and manufacturing method thereof

A microporous ceramic and microporous technology is applied in the field of drinking water purification, which can solve the problems of excessive bacterial content and inability to effectively remove bacteria, and achieve the effects of simple manufacturing method, preventing excessive bacteria in effluent, and good bacteriostatic and bactericidal properties.

Inactive Publication Date: 2012-08-22
NANTONG BEICHENG SCI & TECH ENTREPRENEURIAL MANAGEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of microporous ceramics cannot effectively remove bacteria in the water. Bacteria can exist and multiply in the micropores for a long time. When filtering, the bacteria will flow out with the water flow, resulting in excessive bacterial content in the effluent.

Method used

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  • Antibacterial microporous ceramic and manufacturing method thereof
  • Antibacterial microporous ceramic and manufacturing method thereof
  • Antibacterial microporous ceramic and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] See figure 1 , a circular plate-shaped antibacterial microporous ceramic 1, the micropores of which contain AgO solid particles 2, the filtration accuracy of the antibacterial plate-shaped microporous ceramic 1 is 1 micron to 20 microns, and the antibacterial plate-shaped microporous ceramic 1 The main raw material is diatomaceous earth, which has hydrophilic properties.

[0032] The manufacturing steps of antibacterial plate-shaped microporous ceramics 1 are:

[0033] Step 1. Use 90 volumes of powdered diatomite, 5 volumes of clay, 5 volumes of lime and water to prepare a slurry. The particle size of the powder material is controlled to be 1 micron to 20 microns suitable for the filtration accuracy after making. The disc-shaped blank is made by grouting forming method, then dried, and then sintered at a high temperature of 900 ° C to 1100 ° C;

[0034] Step 2. Soak the sintered microporous ceramics in a silver nitrate solution with a concentration of 0.15mol / L, make ...

Embodiment 2

[0039] See figure 2 , a hemispherical antibacterial microporous ceramic 3, the micropores of which contain AgO solid particles 2, the hemispherical antibacterial microporous ceramic 3 has a filtration accuracy of 1 micron to 50 microns, and the hemispherical antibacterial microporous ceramic 3 mainly The raw material is diatomaceous earth, which has hydrophilic properties.

[0040] The manufacturing steps of hemispherical antibacterial microporous ceramics 3 are:

[0041] Step 1. Use 90 parts of powdered diatomite, 5 parts of clay, 5 parts of lime and water to prepare a slurry. The particle size of the powder material is controlled so that the filtration accuracy is 1 micron to 50 microns. It is made by grouting. Form a hemispherical billet, dry it in the air, and then sinter at a high temperature of 900°C to 1100°C;

[0042] Step 3~step 5 are the same as embodiment 1.

Embodiment 4

[0044] See image 3, a circular tubular antibacterial microporous ceramic filter element, comprising a circular tubular antibacterial microporous ceramic 4, a stuffy cover 5, a joint 8 and a sealing ring 9; the end face of one end of the circular tubular antibacterial microporous ceramic 4 and near the The side of the end face is bonded, sealed, and fixedly connected with food hygiene-grade adhesive 6 and stuffy cover 5, and the end face of the other end and the side near the end face are bonded, sealed, and fixedly connected with food hygiene-grade adhesive 7 and joint 8. The joint 8 is provided with an outlet pipe 10, and the outlet pipe 10 is provided with a groove capable of assembling a sealing ring 9, and the sealing ring 9 is housed in the groove; AgO solid particles 2 are contained in the micropores of the circular tubular antibacterial microporous ceramics 4; The filtration precision of the tubular antibacterial microporous ceramics 4 is 20 microns, which has hydrophi...

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Abstract

The invention discloses an antibacterial microporous ceramic and a manufacturing method thereof. Micropores of the antibacterial microporous ceramic contain AgO solid particles. The manufacturing method comprises the following steps: soaking a microporous ceramic of which the filter precision is 1-100 micrometers in a 0.15 mol/L silver nitrate solution so that the silver nitrate solution infiltrates into the micropores, and drying; soaking the microporous ceramic in a 0.6-5.6 mol/L sodium hydroxide solution or potash solution so that the sodium hydroxide solution or potash solution infiltrates into the micropores; putting the microporous ceramic in a closed container, and introducing O3 gas of which the concentration is not less than 15 mg/L into the closed container for 1-8 hours; and finally, cleaning the microporous ceramic to obtain the antibacterial microporous ceramic. The antibacterial microporous ceramic disclosed by the invention is used for filtering drinking water, and has the advantages of favorable antibacterial property, small filtration resistance and low manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of drinking water purification, in particular to an antibacterial microporous ceramic for filtering. Background technique [0002] Microporous ceramics are commonly used filter materials in the drinking water purification industry. They are usually made into plate, hemispherical, or tubular shapes. The filtration accuracy of microporous ceramics is 0.15 microns to 100 microns. It is generally believed that the size of bacteria is 0.4 micron to 1 micron, so when the filtration accuracy of microporous ceramics is not greater than 0.4 micron, it has a good filtering effect on bacteria. But there is following deficiency in prior art: [0003] 1. Microporous ceramics with a filtration accuracy of no more than 0.4 microns, although the effect of filtering bacteria is better, but the manufacturing cost of this kind of microporous ceramics is relatively high, because it has a high impact on the particle size of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00B01D39/20
Inventor 耿良玲
Owner NANTONG BEICHENG SCI & TECH ENTREPRENEURIAL MANAGEMENT
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