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Water treatment agent with coal ash as main raw material

A technology of main raw material and water treatment agent, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve metal ion pollution, low water treatment capacity, limited pore adsorption capacity, etc. problem, to achieve good adsorption capacity, improve adsorption capacity, and enhance the effect of pore development

Inactive Publication Date: 2018-06-08
湖南云平环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Fly ash is a high-temperature sintering product, which has a good pore structure and certain adsorption capacity, but it is far from being directly used as a raw material for water treatment, because one of the fly ash contains water-soluble metal salts, which will Cause metal ions to pollute water, the second is that its pore adsorption capacity is limited and water treatment capacity is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A water treatment agent with fly ash as the main raw material, including modified fly ash, kaolin and bentonite, and the mass ratio of modified fly ash, kaolin and bentonite is 70:15:15, and the mixture is placed in a ball mill The finished product is obtained after internal grinding and mixing;

[0023] Wherein the preparation method of modified fly ash comprises the steps:

[0024] Step S1: Grinding, grinding the fly ash to a particle size of 200-300 mesh;

[0025] Step S2: pickling modification, soaking the ground fly ash in a hydrochloric acid solution under stirring, or rinsing the fly ash under stirring with a hydrochloric acid solution; wherein the concentration of the hydrochloric acid solution is 5‰, Soaking or washing time is 5-10min;

[0026] Step S3: alkali washing modification, soaking the fly ash after pickling and modification in a sodium hydroxide solution under stirring, or using sodium hydroxide solution to rinse the fly ash under stirring; wherein ...

Embodiment 2

[0032] A water treatment agent with fly ash as the main raw material, including modified fly ash, kaolin and bentonite, and the mass ratio of modified fly ash, kaolin and bentonite is 80:10:10, and the mixture is placed in a ball mill The finished product is obtained after internal grinding and mixing;

[0033] Wherein the preparation method of modified fly ash comprises the steps:

[0034] Step S1: Grinding, grinding the fly ash to a particle size of 200-300 mesh;

[0035] Step S2: pickling modification, soaking the ground fly ash in a hydrochloric acid solution under stirring, or leaching the fly ash under stirring with a hydrochloric acid solution; wherein the concentration of the hydrochloric acid solution is 1%, Soaking or washing time is 5-10min;

[0036] Step S3: alkali washing modification, soaking the fly ash after pickling and modification in a sodium hydroxide solution under stirring, or using sodium hydroxide solution to rinse the fly ash under stirring; wherein ...

Embodiment 3

[0042] A water treatment agent with fly ash as the main raw material, including modified fly ash, kaolin and bentonite, and the mass ratio of modified fly ash, kaolin and bentonite is 75:12:13, and the mixture is placed in a ball mill The finished product is obtained after internal grinding and mixing;

[0043] Wherein the preparation method of modified fly ash comprises the steps:

[0044] Step S1: Grinding, grinding the fly ash to a particle size of 200-300 mesh;

[0045] Step S2: pickling modification, soaking the ground fly ash in a hydrochloric acid solution under stirring, or rinsing the fly ash under stirring with a hydrochloric acid solution; wherein the concentration of the hydrochloric acid solution is 8‰, Soaking or washing time is 5-10min;

[0046] Step S3: alkali washing modification, soaking the fly ash after pickling and modification in a sodium hydroxide solution under stirring, or using sodium hydroxide solution to rinse the fly ash under stirring; wherein ...

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Abstract

The invention discloses a water treatment agent with coal ash as a main raw material. The water treatment agent comprises modified coal ash, kaolin and bentonite in a mass ratio of (70-80):(10-15):(10-15), wherein a preparation method of the modified coal ash comprises the following steps: grinding the coal ash till the particle size is 200-300 meshes; soaking the grinded coal ash into a hydrochloric acid solution at a stirring state, wherein the concentration of the hydrochloric acid solution is 0.5-1%; soaking the coal ash after acid pickling modification at a stirring state into a sodium hydroxide solution, wherein the concentration of the sodium hydroxide solution is 0.5-1%; leaching the coal ash after alkali pickling modification with deionized water at a stirring state till the pH value is 6-8; drying the coal ash after water washing at 100-120 DEG C. As the coal ash is adopted as a main raw material, the water treatment agent disclosed by the invention is good in water treatmenteffect and low in production cost, and the coal ash can be sufficiently utilized.

Description

【Technical field】 [0001] The invention relates to the technical field of water treatment, in particular to a water treatment agent with fly ash as the main raw material. 【Background technique】 [0002] Fly ash is the product of pulverized coal combustion, and its main components are silicon dioxide, aluminum oxide, iron oxide, magnesium oxide, calcium oxide, etc., and the total mass of the above compounds accounts for more than 90%. The output of fly ash in our country is huge. At present, the comprehensive utilization of fly ash is mainly used as building materials and auxiliary materials to produce cement hollow bricks and concrete. [0003] Fly ash is a high-temperature sintering product, which has a good pore structure and certain adsorption capacity, but it is far from being directly used as a raw material for water treatment, because one of the fly ash contains water-soluble metal salts, which will Cause metal ions to pollute water, and the second is that its pore ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30C02F1/28
CPCB01J20/103C02F1/281
Inventor 李启云
Owner 湖南云平环保科技有限公司