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Porous biological ceramic filter element as well as preparation method and use thereof

A bioceramic and filter element technology, applied in the field of ceramics, can solve the problems of high investment and cost, achieve the effects of simple preparation process, simple and convenient use and replacement methods, and convenient large-scale industrial production

Inactive Publication Date: 2009-08-12
沈海滨 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This disinfection technology is non-corrosive, non-irritating, and non-odor, which greatly improves the working conditions. However, in practical applications,

Method used

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  • Porous biological ceramic filter element as well as preparation method and use thereof
  • Porous biological ceramic filter element as well as preparation method and use thereof
  • Porous biological ceramic filter element as well as preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] To prepare a porous bioceramic filter element with a pore size of 0.1 mm, the steps are:

[0025] The first step, preparation of silver-loaded hydroxyapatite powder

[0026] Diammonium hydrogen phosphate and calcium nitrate solutions were prepared at a ratio of 3:5, and the respective pH values ​​were adjusted to 7 with ammonia water. Slowly drop the former into the constantly stirring calcium nitrate solution. After the addition is complete, continue to stir for 8 hours and then let it stand, and then thoroughly wash and separate to remove the impurity NH 4 + , then add 0.001% molar ratio of silver nitrate to mix thoroughly, and finally dry;

[0027] The second step, the preparation of aluminum titanate powder

[0028] The theoretical standard composition of aluminum titanate ingredients, using titanium dioxide and aluminum oxide as raw materials, introducing magnesium fluoride as a mineralizer and magnesium oxide as an inhibitor;

[0029] The third step, the prepa...

Embodiment 2

[0033] To prepare a porous bioceramic filter element with a pore size of 1mm, the steps are:

[0034] The first step, preparation of silver-loaded hydroxyapatite powder

[0035] Diammonium hydrogen phosphate and calcium nitrate solutions were prepared at a ratio of 3:5, and the respective pH values ​​were adjusted to 8 with ammonia water. Slowly drop the former into the constantly stirring calcium nitrate solution. After the addition is complete, continue to stir for 4 hours and then let it stand, and then thoroughly clean and separate to remove the impurity NH 4 + , then add 1% silver nitrate in molar ratio and mix thoroughly, and finally dry;

[0036] The second step, the preparation of aluminum titanate powder

[0037] The theoretical standard composition of aluminum titanate ingredients, using titanium dioxide and aluminum oxide as raw materials, introducing magnesium fluoride as a mineralizer and magnesium oxide as an inhibitor;

[0038] The third step, the preparatio...

Embodiment 3

[0042] The preparation of a porous bioceramic filter element with a pore size of 4mm, the steps are:

[0043] The first step, preparation of silver-loaded hydroxyapatite powder

[0044] Diammonium hydrogen phosphate and calcium nitrate solutions were prepared at a ratio of 3:5, and the respective pH values ​​were adjusted to 9 with ammonia water. Slowly drop the former into the constantly stirring calcium nitrate solution. After the addition is complete, continue to stir for 2 hours and then let it stand, and then thoroughly clean and separate to remove the impurity NH 4 + , then add 5% silver nitrate in molar ratio and mix thoroughly, and finally dry;

[0045] The second step, the preparation of aluminum titanate powder

[0046] The theoretical standard composition of aluminum titanate ingredients, using titanium dioxide and aluminum oxide as raw materials, introducing magnesium fluoride as a mineralizer and magnesium oxide as an inhibitor;

[0047] The third step, the pr...

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Abstract

The invention relates to a porous biological ceramics filter core as well as a preparation method and application thereof, belonging to the technical field of ceramics. The invention is characterized in that: the porous biological ceramics filter core is composed of 50-90% of hydroxylapatite carrying Ag and 10-50% of aluminum titanate, is distributed in the form of microcrystallite of 1-100mum, undergoes extrusion forming, and is calcined at the calcination temperature of 450-1400 DEG C into porous honeycomb ceramics with the pore diameter of 0.1-4mm; the preparation method comprises: crushing the hydroxylapatite carrying Ag and the aluminum titanate into microcrystallite with the fineness of 1-100mum, adding water for even stirring in proportion, filter-pressing and dehydrating the microcrystallite into filter cake, carrying out extrusion forming on the filter cake after mud-smelting, drying and calcining; the invention has the advantages that: (1) mounting, using and replacing methods are simple and convenient; (2) the invention can be used for drinkable water delivery terminal with the sterilization rate over 90%; and (3) the process is simple and the invention can be applicable to mass industrial production.

Description

technical field [0001] The invention relates to a porous ceramic product and its preparation method and application, more specifically, to a composite material porous bioceramic filter element and its preparation method and application, belonging to the technical field of ceramics. Background technique [0002] At present, due to the increasingly serious pollution of water sources and the continuous improvement of drinking water quality safety standards, the traditional water supply treatment process is difficult to meet the increasingly stringent drinking water effluent requirements. During the transmission of drinking water in the municipal water supply pipe network, bacteria and viruses are easy to grow in the pipeline for a long time due to long-term adhesion and rapid reproduction, causing bacteria and viruses in drinking water to become an important safety hazard for human health. It is understood that there are hundreds of pathogenic microorganisms that can contaminat...

Claims

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Application Information

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IPC IPC(8): B01D39/20
Inventor 沈海滨马宁
Owner 沈海滨