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Acid heat treatment attapulgite water quality purifying agent

A technology of acid heat treatment and attapulgite, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effects of avoiding energy consumption, improving physical adsorption performance, and avoiding excessive consumption

Inactive Publication Date: 2016-03-09
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 be popularized and used, and attapulgite ceramic filter material has a broad market

Method used

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  • Acid heat treatment attapulgite water quality purifying agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A kind of acid heat treatment attapulgite water quality purifying agent, comprises the following steps:

[0053] A. Material selection processing

[0054] The attapulgite clay is naturally weathered for 15-30 days, and the moisture content of the attapulgite clay is reduced to 13% by drying;

[0055] B. Crushed and sieved

[0056] The attapulgite clay is pulverized and sieved, and the sieve mesh number is 90-120 mesh;

[0057] C. Acidification

[0058] Mix the attapulgite clay powder with dilute sulfuric acid with a molar concentration of 1.0mol / L for solid-liquid mixing, the solid-liquid weight ratio is 1:0.5, stir evenly, and stand at room temperature for 1 hour;

[0059] D. Alkaline neutralization

[0060] Neutralize the acidified attapulgite powder with 2mol / L alkali solution, adjust the pH value to 7, perform a solid-liquid separation, and keep the attapulgite powder;

[0061] E. Calcination

[0062] Dry and crush the alkali-neutralized attapulgite powder at ...

Embodiment 2

[0066] A kind of acid heat treatment attapulgite water quality purifying agent, comprises the following steps:

[0067] A. Material selection processing

[0068]The attapulgite clay is naturally weathered for 15-30 days, and the moisture content of the attapulgite clay is reduced to 13% by drying;

[0069] B. Crushed and sieved

[0070] The attapulgite clay is pulverized and sieved, and the sieve mesh number is 90-120 mesh;

[0071] C. Acidification

[0072] Mix the attapulgite clay powder with dilute sulfuric acid with a molar concentration of 2.0mol / L for solid-liquid mixing, the solid-liquid weight ratio is 1:2, stir evenly, and let stand at room temperature for 2 hours;

[0073] D. Alkaline neutralization

[0074] Neutralize the acidified attapulgite powder with a 4mol / L alkali solution, adjust the pH value to 7, perform a solid-liquid separation, and retain the attapulgite powder;

[0075] E. Calcination

[0076] Dry and crush the alkali-neutralized attapulgite powd...

Embodiment 3

[0080] A kind of acid heat treatment attapulgite water quality purifying agent, comprises the following steps:

[0081] A. Material selection processing

[0082] The attapulgite clay is naturally weathered for 15-30 days, and the moisture content of the attapulgite clay is reduced to 13% by drying;

[0083] B. Crushed and sieved

[0084] The attapulgite clay is pulverized and sieved, and the sieve mesh number is 90-120 mesh;

[0085] C. Acidification

[0086] Mix the attapulgite clay powder with dilute sulfuric acid with a molar concentration of 3.0mol / L for solid-liquid mixing, the solid-liquid weight ratio is 1:3, stir evenly, and let stand at room temperature for 3 hours;

[0087] D. Alkaline neutralization

[0088] Neutralize the acidified attapulgite powder with a 5mol / L alkali solution, adjust the pH value to 8, perform a solid-liquid separation, and retain the attapulgite powder;

[0089] E. Calcination

[0090] Dry and crush the alkali-neutralized attapulgite pow...

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Abstract

The invention relates to a water adsorption material, particularly relates to an acid heat treatment attapulgite water quality purifying agent. Attapulgite has a special fibrous structure, unusual colloid and adsorption performance, is wide in application field and has good reputation of earth king. The attapulgite clay has a special chained crystal structure, good colloid properties such as unique dispersion, water absorption and salt and alkali resistance and relatively high adsorption decoloring capacity and has good plasticity and adhesion performance, thereby being widely applied in various industries such as petroleum, chemical industry, building materials, papermaking, medicine, agriculture, environmental protection, printing and articles for daily use. Since the attapulgite crystal fibers are slender, internally porous, large in specific surface area and good in selection adsorption performance, the attapulgite is widely applied to the fields such as chemical industry, agriculture, food, medicine and environmental protection. At present, the attapulgite is widely used for the sewage treatment and particularly used for treating the waste water in printing and dyeing mills and tanneries, and the treated sewage can reach the national emission standard.

Description

technical field [0001] The invention relates to a water body adsorption material, in particular to an attapulgite water purification agent for acid heat treatment. Background technique [0002] Attapulgite, also known as palygorskite, is a hydrated magnesium aluminum silicate clay mineral with a unique layer chain structure, which belongs to the sepiolite group in mineralogy classification. Attapulgite deposits (spots) have been discovered in Jiangsu, Anhui, Sichuan, Shandong, Gansu, Jin, Zhejiang, Guizhou, Inner Mongolia, Hubei, Hebei and Qinghai, among which the deposits in Gansu Province are concentrated in Jingyuan, Linze, etc. , Huining and other places, with proven reserves of 400 million tons and prospective reserves of nearly 1 billion tons, it is one of the largest deposits in the world. [0003] At present, there is no attapulgite water treatment filter material to be popularized and used, and the attapulgite ceramic filter material has a broad market. It plays a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28
CPCC02F1/281
Inventor 任珺陶玲汪孔泉曹田张文杰
Owner LANZHOU JIAOTONG UNIV
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