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Active carbon ceramic with selectivity and preparation method thereof

An activated carbon and selective technology, which is applied in the field of activated carbon ceramics and its preparation, can solve the problems of occupying a large space, dust pollution, high cost and price, etc.

Inactive Publication Date: 2012-05-16
漯河微陶净化材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, harmful substances such as pathogenic bacteria and heavy metals in sludge make it difficult to use as fertilizer. The traditional treatment method is dehydration, drying, and landfill in landfill, but landfill in landfill occupies a large amount of land
Another treatment method is to use aerobic incineration to reduce the volume of sludge, but the incineration process produces harmful substances such as dioxins that pollute the air
[0003] The existing adsorption materials are mainly activated carbon, carbon fiber materials and other large specific surface media, which are used to adsorb phenols in air and water. However, the production of activated carbon, including fruit shells and coal, requires a large amount of fossil fuels. And produce dust pollution, high cost and price
Moreover, these activated carbons and fibers only stay in physical adsorption for phenols, and do not have the digestion function of subsequent biological media.
In addition, porous rock, slag or plastic media, porous rock, slag or plastic media are widely used as filter media or bacteria attachment growth media, but the media does not have the adsorption function of benzene, phenol, polyhydrocarbons, and dimethyl sulfide
[0004] In the prior art, the heating or incineration of sludge is mostly carried out in an aerobic environment. During the firing process, the carbon source is lost, ceramsite, ash, and ash are formed, and a large amount of odorous waste gas is generated. The generated materials do not absorb odor and Decolorization function
In addition, the prior art has not yet found a new material that combines the adsorption function of activated carbon with the digestion function of biological media by adding certain crop shells to the formula

Method used

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  • Active carbon ceramic with selectivity and preparation method thereof
  • Active carbon ceramic with selectivity and preparation method thereof

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Experimental program
Comparison scheme
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Embodiment 1

[0049] The selective activated carbon ceramic of this embodiment is made of the following raw materials in parts by weight: sludge 30, kaolin 2, and iron powder 1.

[0050] The preparation method is as follows:

[0051] (1) Mix the raw materials of biological activated carbon ceramics according to the above formula, use extrusion or disc granulation to make and shape, and then dry and shape;

[0052] (2) Place the blank obtained in step (1) in a high-temperature oven for firing under vacuum, and the vacuum in the high-temperature oven is -0.08-0.09 Mpa. The temperature of the oven is increased to 300°C at a heating rate of 90°C / h for 1.5 hours, and the volatile odorous gas generated during this period is passed into the gas furnace for combustion, and its heat is used for self-preservation;

[0053] (3) The temperature of the oven is raised to 740°C at a heating rate of 90°C / h for 3 hours; then the temperature is lowered to room temperature at a cooling rate of 150°C / h to obtain a cer...

Embodiment 2

[0057] The selective activated carbon ceramic of this embodiment is made of the following raw materials in parts by weight: sludge 50, kaolin 10, copper powder 3, and wheat bran 8.

[0058] The preparation method is as follows:

[0059] (1) Mix the raw materials of biological activated carbon ceramics according to the above formula, use extrusion or disc granulation to make and shape, and then dry and shape;

[0060] (2) Place the blank obtained in step (1) in a high-temperature oven for firing under the protection of nitrogen. The pressure of the nitrogen introduced into the high-temperature oven is 0.1-0.12Mpa. The temperature of the oven is raised to 300°C at a heating rate of 100°C / h for 1.5 hours. The volatile odorous gas produced during this period is passed into the gas furnace for combustion, and its heat is used for self-preservation;

[0061] (3) The temperature of the oven is raised to 750°C at a heating rate of 100°C / h for 2.5 hours; then the temperature is lowered to room...

Embodiment 3

[0065] The selective activated carbon ceramic of this embodiment is made of the following raw materials in parts by weight: sludge 30-70, kaolin 2-15, Zn 1-5, bran 8-12, and calcium carbonate 3-5.

[0066] The preparation method is as follows:

[0067] (1) Mix the raw materials of biological activated carbon ceramics according to the above formula, use extrusion or disc granulation to make and shape, and then dry and shape;

[0068] (2) Place the blank obtained in step (1) in a high-temperature oven for firing under the protection of nitrogen. The pressure of the nitrogen introduced into the high-temperature oven is 0.1-0.12Mpa. The temperature of the oven is increased to 305°C at a heating rate of 110°C / h for 1 hour. The volatile odorous gas generated during this period is passed into the gas furnace for combustion, and its heat is used for self-preservation;

[0069] (3) The temperature of the oven is raised to 760°C at a heating rate of 110°C / h for 2 hours; then the temperature is ...

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Abstract

The invention discloses active carbon ceramic with selectivity. The active carbon ceramic is mainly prepared from the following raw materials in parts by weight: 30-70 parts of sludge, 2-15 parts of kaolin and 1-5 parts of a metal M or an oxide of the metal M. The active carbon ceramic with selectivity has an amorphous Si-C-M structure, and the specific surface area is 400-500 m<2> / g. In the invention, a formula for adding crop hull waste and the like into waste water of the papermaking industry and residual sludge and kaolin of the food industry and a sewage treatment plant is adopted, oxygen-free heating and burning are performed, and porous ceramic carbon particles or powder is activated with microwaves, so that active carbon ceramic with biological selectivity is formed. An obtained ceramic material has the functions of selectively adsorbing benzene, phenol, hydrocarbons, dimethyl sulfide and thioether malodorous substances, and is used for filtering air; ceramic carbon contains a biological medium filter material for providing effective carbon sources and minerals for air filtering and waste water treatment for microorganisms; and the material has the functions of adsorbing phosphate radical ions in water and removing oxygen-enriched components from water.

Description

Technical field [0001] The invention belongs to the technical field of new air filtration materials and waste water treatment, and specifically relates to a selective activated carbon ceramic and a preparation method thereof. Background technique [0002] Wastewater from the paper industry, food industry and sewage treatment plants, treatment facilities and other wastewater biological treatment will produce a large amount of waste sludge. Because the sludge contains a large number of harmful substances such as bacteria, microorganisms, heavy metals, and odors, the harmless treatment and reuse of sludge has become a worldwide technical problem. Harmful substances such as pathogenic bacteria and heavy metals in the sludge make it difficult to be used as fertilizer. The traditional treatment method is dehydration, drying, and landfill, but the landfill takes up a lot of space. Another treatment method is to use aerobic incineration to reduce the volume of sludge, but the incinerati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00B01J20/20
CPCC04B2235/3232C04B2235/407C04B35/62675C04B2235/3272C04B2235/5409C04B35/6268C04B35/6269C04B2235/3284C04B35/573C04B2235/422C04B2235/40C04B2235/6021C04B35/632C04B2235/405C04B33/132C04B2235/3208C04B2235/3281C04B2235/404C04B33/1321C02F3/107C04B35/62213C04B35/62695Y02P40/60Y02W10/10
Inventor 董良杰
Owner 漯河微陶净化材料有限公司
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