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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., can solve the problems of high production cost and poor mechanical performance, and achieve the effect Good, improved mechanical properties, improved operability

Inactive Publication Date: 2011-02-16
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 the volume as 3cm 3 10 kilograms of fly ash brick particles were put into a mixed active solution containing 3% each of aluminum salt, iron salt, polyacrylamide, and 2.5% each of ferric chloride and sodium perchlorate; after proper stirring, let stand for 36 hours, The active substance 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 a baking oven, and polymerized and cured for 4 hours at 120 °C ; Take out and cool to room temperature, and put the resulting product into a moisture-proof bag.

Embodiment 2

[0028] Take the volume as 15cm 3 10 kilograms of fly ash brick particles were put into a mixed active solution containing 3.5% of aluminum salt, 3.5% of iron salt, 2.5% of polyacrylamide, 2.5% of ferric chloride and 2.5% of sodium perchlorate; after stirring, let stand for 48 hours , so that the active material 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 a baking oven, and polymerized and cured at 180 ° C for 2 hours; take out and cool to room temperature, and put the obtained product in a moisture-proof bag.

Embodiment 3

[0030] Take the volume as 10cm 3 10 kg of fly ash brick particles were placed in a mixed active solution containing 4% of aluminum salt, 4% of iron salt, 2% of polyacrylamide, 3.5% of ferric chloride, and 3.5% of sodium perchlorate; after stirring, let stand for 24 For hours, the active substance was immersed and diffused into the internal micropores of the fly ash brick particles, and stirred every 4 hours during the standing period; the fly ash brick particles were taken out, air-dried, placed in a baking oven, and polymerized and cured at 200 ° C. 2 hours; take out and cool to room temperature, and put the obtained product in 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 microporous fly ash brick fragments. 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. At present, the main treatment or utilization method 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. The brick factory usually pulverizes the fragments into powder, which is added to the brick raw material for secondary production. This reduces waste emissions, but increases costs. [0003...

Claims

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Application Information

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