An attapulgite ceramic filter material for water treatment

A technology of ceramic filter material and water treatment, which is applied in the field of ceramic filter material to achieve the effects of less secondary pollution, low cost, and increased specific surface area

Inactive Publication Date: 2016-04-06
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no attapulgite filter material for water treatment to

Method used

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  • An attapulgite ceramic filter material for water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] An attapulgite water treatment ceramic filter material, comprising the following steps:

[0041] A. Acidification

[0042] Using attapulgite clay as raw material, attapulgite clay, water and sulfuric acid are prepared in parts by weight, 45 parts of attapulgite clay, 35 parts of water, 0.5 part of sulfuric acid with a mass fraction of 98%, and the sulfuric acid with a mass fraction of 98% is diluted in water , diluted with sulfuric acid and sprayed on the attapulgite clay, stirred evenly, stacked for 24-48h, and crushed, the crushed particle size was 180-200 mesh;

[0043] B. Ingredients

[0044] Pulverized attapulgite clay, sintering agent, binding agent, and water are prepared according to parts by weight, 65 parts of pulverized attapulgite clay, 2 parts of sintering agent, 5 parts of binding agent, 13 parts of water, stir and mix evenly and let stand 5-15h;

[0045] C. Granulation

[0046] The mixture is fed into the granulator and processed into balls with a dia...

Embodiment 2

[0053] An attapulgite water treatment ceramic filter material, comprising the following steps:

[0054] A. Acidification

[0055]Using attapulgite clay as raw material, attapulgite clay, water and sulfuric acid are prepared in parts by weight, 50 parts of attapulgite clay, 40 parts of water, 1 part of sulfuric acid with a mass fraction of 98%, and the sulfuric acid with a mass fraction of 98% is diluted in water , diluted with sulfuric acid and sprayed on the attapulgite clay, stirred evenly, stacked for 24-48h, and crushed, the crushed particle size was 180-200 mesh;

[0056] B. Ingredients

[0057] Pulverized attapulgite clay, sintering agent, binder, and water are prepared according to parts by weight, 70 parts of pulverized attapulgite clay, 4 parts of sintering agent, 5-15 parts of binder, 14 parts of water, and after mixing evenly Stand still for 5-15h;

[0058] C. Granulation

[0059] The mixture is sent to the granulator and processed into balls with a diameter of ...

Embodiment 3

[0066] An attapulgite water treatment ceramic filter material, comprising the following steps:

[0067] A. Acidification

[0068] Using attapulgite clay as raw material, attapulgite clay, water and sulfuric acid are prepared in parts by weight, 65 parts of attapulgite clay, 50 parts of water, 2 parts of sulfuric acid with a mass fraction of 98%, and the sulfuric acid with a mass fraction of 98% is diluted in water , diluted with sulfuric acid and sprayed on the attapulgite clay, stirred evenly, stacked for 24-48h, and crushed, the crushed particle size was 180-200 mesh;

[0069] B. Ingredients

[0070] Pulverized attapulgite clay, sintering agent, binding agent, and water are prepared according to parts by weight, 85 parts of pulverized attapulgite clay, 5 parts of sintering agent, 15 parts of binding agent, and 15 parts of water are stirred and mixed evenly and left to stand 5-15h;

[0071] C. Granulation

[0072] The mixture is fed into the granulator and processed into ...

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Abstract

The invention relates to ceramic filter materials and particularly relates to an attapulgite ceramic filter material for water treatment. The specific surface area of attapulgite is increased by adding an agglomerant and an adhesive and calcinating, so that the attapulgite is high in adsorption capability and is increasingly taken seriously in waste water treatment and the modified attapulgite has wide uses in waste water treatment. The attapulgite is a water-containing magnesium-rich aluminosilicate clay mineral having a layered chain structure. By addition of the agglomerant and the adhesive and calcination, attapulgite crystals are hairy or fibrous, are rod-like or needle like under an electron microscope, are white, grey, light green or light brown, and are fibrous under an atomic force microscope. The inside of the attapulgite is provided with a plurality of porous channels and the cross section of the porous channels is about 0.38 nm*0.63 nm. The attapulgite ceramic filter material is particularly suitable for water treatment.

Description

technical field [0001] The invention relates to a ceramic filter material, in particular to an attapulgite water treatment ceramic filter material. Background technique [0002] Adsorption is one of the commonly used methods in sewage treatment, and the selection of adsorption materials is the key to adopting this technology. Although granular adsorption materials can simplify the process and effectively solve the recycling problem, there are still many difficulties in practical application. Therefore, choosing the appropriate curing agent, binder and pore-forming agent, strengthening the granulation research of clay minerals, solving the problem of solid-liquid separation, finding a suitable regeneration method, realizing the repeated use of adsorbents, and reducing costs have become practical applications that need to be solved urgently. The problem. [0003] At present, there is no attapulgite water treatment filter material to be popularized and used, and the attapulgi...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B33/04C04B33/13C04B35/14
CPCC04B38/009C04B35/14
Inventor 陶玲任珺曹田汪孔泉张文杰
Owner LANZHOU JIAOTONG UNIV
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