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Nnano-silver diatomite antibacterial filter core and preparation method thereof

A technology of silver diatomite and diatomite, which is applied in the field of nano-silver diatomite antibacterial filter element and its preparation, can solve the problems of hidden dangers in water quality safety and damage to the function of water purification membrane, and achieve good filtration and adsorption performance and guarantee safe effect

Active Publication Date: 2014-09-17
ZHEJIANG ZHAOHUI FILTRATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As one of the drinking water purification equipment, household water purification filter elements are commonly used to absorb organic and colloidal substances in the water, and bacteria can use the activated carbon filter elements that absorb organic impurities as carbon sources to multiply in large numbers, which will not only endanger the subsequent water purification membrane function , and leave hidden dangers to water quality safety

Method used

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  • Nnano-silver diatomite antibacterial filter core and preparation method thereof
  • Nnano-silver diatomite antibacterial filter core and preparation method thereof

Examples

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Effect test

Embodiment 1

[0015] Embodiment 1: A nano-silver diatomite antibacterial filter element, its production components and proportioning are: diatomite 60%, porogen 10%, sintering aid 10%, binding agent 10%, water 10% , wherein the porogen is one or more of plant starch, plant fiber, carbon powder, sodium chloride, ammonium chloride, potassium chloride, and the sintering aid is kaolin, vermiculite powder, alumina powder, bentonite, quartz One or more of powder and montmorillonite, and the binder is one or more of carboxymethyl cellulose, hydroxymethyl cellulose, polyvinyl alcohol, polyethylene glycol, and polyvinyl pyrrolidone. The method of using the above-mentioned raw materials to prepare the nano-silver diatomite antibacterial filter element is: (1) purify and refine the diatomite, soak the acid-soluble diatomite with 2% to 10% concentration of hydrochloric acid or nitric acid or sulfuric acid for 1h to 3h, and filter Wash with water until it is near neutral, dry at 80°C-100°C, and calcinat...

Embodiment 2

[0016] Embodiment 2: A kind of nano-silver diatomite antibacterial filter element, its making component and proportioning are: diatomite 75%, porogen 3%, sintering auxiliary agent 8%, binding agent 3.5%, water 10% , plasticizer 0.5%, wherein the porogen is one or more of plant starch, plant fiber, carbon powder, sodium chloride, ammonium chloride, potassium chloride, and the sintering aid is kaolin, vermiculite powder, oxidized One or more of aluminum powder, bentonite, quartz powder, and montmorillonite, and the binder is one of carboxymethylcellulose, hydroxymethylcellulose, polyvinyl alcohol, polyethylene glycol, and polyvinylpyrrolidone One or more, the plasticizer is ethylene glycol or glycerol. Refer to Example 1 for the method of preparing nano-silver diatomite antibacterial filter element using the above raw materials.

Embodiment 3

[0017] Embodiment 3: A nano-silver diatomite antibacterial filter element, its production components and proportioning are: diatomite 66.4%, porogen 5%, sintering aid 9%, binding agent 7%, water 12% , plasticizer 0.6%, wherein the porogen is one or more of plant starch, plant fiber, carbon powder, sodium chloride, ammonium chloride, potassium chloride, and the sintering aid is kaolin, vermiculite powder, oxidized One or more of aluminum powder, bentonite, quartz powder, and montmorillonite, and the binder is one of carboxymethylcellulose, hydroxymethylcellulose, polyvinyl alcohol, polyethylene glycol, and polyvinylpyrrolidone One or more, the plasticizer is ethylene glycol or glycerol. Refer to Example 1 for the method of preparing nano-silver diatomite antibacterial filter element using the above raw materials.

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Abstract

The invention provides a nano-silver diatomite antibacterial filter core. The nano-silver diatomite antibacterial filter core is prepared from diatomite, a pore forming agent, a sintering aid, a binder and water. A preparation method for the nano-silver diatomite antibacterial filter core comprises the following steps: carrying out purification and fine treatment on diatomite; subjecting diatomite to silver loading; carrying out mixing and grinding solid raw materials until D50 is equal to 1 to 10 mu m; subjecting the ground raw materials to mixing with a liquid raw material; carrying out ageing; subjecting the aged raw materials to die casting or extruding to obtain a filter core blank; and drying and sintering the filter core blank so as to prepare the nano-silver diatomite antibacterial filter core. The nano-silver diatomite antibacterial filter core has good filtration and adsorption performance due to usage of the porous structure of diatomite; after loading of nano-silver on the diatomite and sinter molding, the prepared nano-silver diatomite antibacterial filter core can guarantee microbiological safety of water quality and provide safety guarantee for performance of the functions of a subsequent water purification film when applied to bacterium and turbidity removal of domestic water.

Description

technical field [0001] The invention belongs to the technical field of domestic water purification equipment, and in particular relates to a nano-silver diatomite antibacterial filter element and a preparation method thereof. Background technique [0002] As one of the drinking water purification equipment, household water purification filter elements are commonly used to absorb organic and colloidal substances in the water, and bacteria can use the activated carbon filter elements that absorb organic impurities as carbon sources to multiply in large numbers, which will not only endanger the subsequent water purification membrane function , and leave hidden dangers to water quality safety. [0003] Diatomaceous earth is a natural siliceous sedimentary rock with abundant reserves. It has a well-developed and regularly arranged microporous structure. The pore size is generally between 0.1 and 0.3 μm. It has strong adsorption and filtration functions. It is currently widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01J20/20B01J20/30C02F1/28C02F1/00C02F1/50A01N59/16A01N25/08A01P1/00
Inventor 王瑞刘朝军刘玉桂沈祺
Owner ZHEJIANG ZHAOHUI FILTRATION TECH
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