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Method for producing wastewater treatment material with microporous flyash brick fragment

A technology for fly ash brick and sewage treatment, which is applied in adsorption water/sewage treatment, oxidized water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of poor mechanical performance and high production cost, and achieve mechanical performance Improve and enhance the adsorption performance, the effect of saving consumption

Inactive Publication Date: 2009-05-13
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the name of the Chinese invention patent is "a preparation method of multi-functional fly ash sewage treatment material, and the patent number is ZL200410015358.8. This invention uses the inherent characteristics of the above-mentioned fly ash to make the fly ash into a solid through chemical reaction. Microporous and multifunctional sewage treatment materials, but the mechanical properties of the products are poor and the production cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take a volume of 3cm 3 Put 10 kg of fly ash brick particles into a mixed active substance solution containing 3% each of aluminum salt, iron salt, polyacrylamide, 2.5% of ferric chloride, and sodium perchlorate; leave it to stand for 36 hours after proper stirring, Make the active matter immerse and diffuse into the internal micropores of the fly ash brick particles, and stir once every 6 hours during the standing period; take out the fly ash brick particles, air dry, put them in an oven, and polymerize and cure at 120°C for 4 hours ; Take it out and cool it to room temperature, and put the resulting product into a moisture-proof bag.

Embodiment 2

[0028] Take a volume of 15cm 3 Put 10 kg of fly ash brick particles into a mixed active solution containing 3.5% aluminum salt, 3.5% iron salt, 2.5% polyacrylamide, 2.5% ferric chloride, and 2.5% sodium perchlorate; leave it to stand for 48 hours after stirring , so that the active matter is immersed and diffused into the internal micropores of the fly ash brick particles, and stirred every 6 hours during the standing period; the fly ash brick particles are taken out, air-dried, placed in an oven, and polymerized and cured at 180°C for 2 hour; take out and cool to room temperature, and the resulting product is packed in a moisture-proof bag.

Embodiment 3

[0030] Take a volume of 10cm 3 Put 10 kg of fly ash brick particles into a mixed active substance solution containing 4% aluminum salt, 4% iron salt, 2% polyacrylamide, 3.5% ferric chloride, and 3.5% sodium perchlorate; after stirring, let it stand for 24 hours, make the active material immerse and diffuse into the internal micropores of the fly ash brick particles, and stir once every 4 hours during the standing period; take out the fly ash brick particles, air dry, put them in an oven, and polymerize and solidify at 200°C 2 hours; take it out and cool to room temperature, and put the resulting product into a moisture-proof bag.

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a method for preparing sewage treatment materials through microporous fly ash brick chips. The method comprises the following steps: A. granulation; B. cleaning and draining; C. the preparation of active matters; D. soaking and stirring; E. air drying and polymerization; and F. packaging. The product has good mechanical performance and low manufacturing cost, and makes use of the microporous characteristic of the crude fly ash brick chips to polymerize and solidify a flocculant and an oxidizer into micropores, thereby obtaining the solid material with a microporous structure, endowing the material with the flocculating performance and oxidation performance while simultaneously further strengthening the absorbability of the material, and changing the material into the multifunctional sewage treatment material.

Description

Technical field: [0001] The invention relates to the technical field of sewage treatment, in particular to a method for preparing sewage treatment materials from fragments of microporous fly ash bricks. Background technique: [0002] Fly ash is the main waste of coal-fired power plants. It is dust with a diameter of 60-100um and is one of the important sources of air pollution. Fly ash contains 20-30% alumina, 10-16% iron oxide, 40-60% silica, and has certain resource value. Now the main way of processing or utilization is to make building bricks, road building fillers, sewage treatment materials, etc. Among them, the most important use is to make building bricks, accounting for about 70% of the utilization. But in the process of making building bricks, a lot of debris is produced. Brick factories usually crush the fragments into powder and add them to brick raw materials for secondary production. Although this reduces the discharge of waste, it increases the cost. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/72B01J20/02
Inventor 阮湘元彭敏
Owner DONGGUAN UNIV OF TECH
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