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A kind of preparation method of diatomite/zeolite/activated carbon multilayer composite ceramic filter element

A multi-layer composite, ceramic filter element technology, used in ceramic products, separation methods, chemical instruments and methods, etc., can solve the problems of low activated carbon content, limited adsorption capacity, low adsorption rate, etc., to prolong service life and improve production efficiency. , the effect of improving efficiency

Inactive Publication Date: 2016-01-20
厦门启泉新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low adsorption rate of diatomite and activated carbon itself for heavy metals, after the introduction of activated carbon, its strength is low, which is easy to cause the filter element to break, the content of activated carbon is low, and the adsorption capacity is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Add 500g of diatomaceous earth, 1000g of zeolite, 500g of activated carbon, 50g of cornstarch, and 0.45L of deionized water to a 5L stirring kneader in turn and start stirring and kneading for 3 hours to obtain a uniform mud;

[0024] 2. Let the mud stand for 12 hours, then take 500g of mud and put it into a stainless steel mold, then turn on the roll forming machine, use a pressure roller to compress the slurry on the inside of the stainless steel mold, and roll for 3 minutes until the mold is no longer squeezed Remove the excess mud until the inside is smooth, remove the excess mud outside the mold, and obtain a composite ceramic filter green body with a diameter of 50mm, a wall thickness of 6.5mm, and a length of 250mm, with one end closed and the other open.

[0025] 3. Dry the green body of the composite ceramic filter element at 110° C. for 12 hours to obtain a dried green body.

[0026] 4. Put 4000g of alumina balls (Φ30mm:Φ20mm:Φ15mm=1:2:1) into a 10L polyure...

Embodiment 2

[0031] 1. Add 500g of diatomaceous earth, 1200g of zeolite, 300g of activated carbon, 50g of cornstarch, and 0.45L of deionized water to a 5L stirring kneader in turn and start stirring and kneading for 3 hours to obtain a uniform mud;

[0032] 2. Let the mud stand for 12 hours, then take 500g of mud and put it into a stainless steel mold, then turn on the roll forming machine, use a pressure roller to compress the slurry on the inside of the stainless steel mold, and roll for 3 minutes until the mold is no longer squeezed Remove the excess mud until the inside is smooth, remove the excess mud outside the mold, and obtain a composite ceramic filter green body with a diameter of 50mm, a wall thickness of 6.5mm, and a length of 250mm, with one end closed and the other open.

[0033] 3. Dry the green body of the composite ceramic filter element at 110° C. for 12 hours to obtain a dried green body.

[0034] 4. Put 4000g of alumina balls (Φ30mm:Φ20mm:Φ15mm=1:2:1) into a 10L polyure...

Embodiment 3

[0039] 1. Add 800g of diatomaceous earth, 850g of zeolite, 350g of activated carbon, 50g of cornstarch, and 0.45L of deionized water to a 5L stirring kneader in turn, and start stirring and kneading for 3 hours to obtain a uniform mud;

[0040] 2. Let the mud stand for 12 hours, then take 500g of mud and put it into a stainless steel mold, then turn on the roll forming machine, use a pressure roller to compress the slurry on the inside of the stainless steel mold, and roll for 3 minutes until the mold is no longer squeezed Remove the excess mud until the inside is smooth, remove the excess mud outside the mold, and obtain a composite ceramic filter green body with a diameter of 50mm, a wall thickness of 6.5mm, and a length of 250mm, with one end closed and the other open.

[0041] 3. Dry the green body of the composite ceramic filter element at 110° C. for 12 hours to obtain a dried green body.

[0042] 4. Put 4000g of alumina balls (Φ30mm:Φ20mm:Φ15mm=1:2:1) into a 10L polyure...

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Abstract

The invention relates to a composite ceramic filter element, particularly a preparation method of a kieselguhr / zeolite / activated carbon multilayer composite ceramic filter element. The preparation method comprises the following steps: stirring and kneading kieselguhr, zeolite, activated carbon, adhesive and water into sludge, aging, carrying out roll forming in a mold, stripping to obtain a green blank, and drying; and carrying out ball milling on kieselguhr, water, flocculant and stabilizer to obtain a slurry, aging, coating on the internal and external surfaces of the green blank, sintering and cooling to obtain the product. The addition proportion of the zeolite in the ceramic filter element is greater than 40%, thereby enhancing the heavy metal adsorption and removal efficiency of the filter element. The roll forming is adopted to enhance the production efficiency, reduce the loss, lower the cost, increase the compactness of the filter element blank and enhance the strength of the filter element. The kieselguhr coated on the internal and external surfaces of the green blank can form microfiltration membrane layers to facilitate cleaning restoration of the polluted outer coating filter element, thereby prolonging the service life of the filter element; and the single kieselguhr can form a favorable framework to enhance the overall strength of the filter element. The kieselguhr / zeolite / activated carbon multilayer composite ceramic filter element can remove particles, microbes and the like and keep necessary minor elements for the human body.

Description

technical field [0001] The invention relates to a composite ceramic filter element, in particular to a preparation method of a diatomite / zeolite / activated carbon multilayer composite ceramic filter element which can be used in direct-drinking water filtering equipment. Background technique [0002] The pollutants in drinking water mainly include particulate matter (such as sediment, rust, etc.), microorganisms (such as algae, bacteria, viruses, etc.), dissolved organic matter (such as pesticide residues, benzene series) and heavy metal ions (such as arsenic, lead, cadmium, etc. ). Tap water for domestic drinking removes a large amount of particulate matter, microorganisms, dissolved organic matter and heavy metals during the production process, but some organic matter remains, which combine with free chlorine to form carcinogenic organic chlorides (such as chloroform). In addition, due to secondary water supply, municipal pipe network aging and other reasons, it will lead t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/20C04B38/08C04B35/622
Inventor 沈亮陈晓彦
Owner 厦门启泉新材料科技有限公司
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