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Preparation method of aluminum-iron composite microspheres and a preparation method and application of adsorption settling agent

A technology of composite microspheres and sedimentation agent, applied in chemical instruments and methods, adsorbed water/sewage treatment, alkali metal compounds, etc., can solve the problems of limited treatment capacity, difficult to meet the actual requirements of industrial and domestic sewage treatment, etc., and achieve transparency The effect of increasing, considerable economic benefits, and good reuse rate

Inactive Publication Date: 2018-12-21
WUHU XINDA LANDSCAPING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Modern wastewater treatment methods are mainly divided into physical treatment methods. Physical treatment methods separate and recover suspended pollutants (including oil film and oil beads) in wastewater through physical action, but their treatment capacity is extremely limited. Difficult to meet the actual requirements of timely treatment of industrial and domestic sewage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing aluminum-iron composite microspheres, comprising the steps of: mixing 32kg of aluminum hydroxide, 10kg of ferric oxide, and 1kg of humic acid; grinding for 35 minutes; the grinding pressure is 0.12Mpa; adding 2kg of polyvinyl alcohol; The 40wt% ethanol solution was stirred for 5 minutes, the stirring temperature was 180° C., and spray-dried at 210° C. to obtain aluminum-iron composite microspheres.

[0023] A method for preparing an adsorption-sedimentation agent, comprising the steps of:

[0024] S1. Stir 12kg of medical stone powder, 10kg of flax fiber, 4kg of urea, and 2kg of sodium hydroxide for 40min at a stirring temperature of 72°C. Adjust the system to be neutral with a concentration of 1.4mol / L sulfuric acid solution, filter, wash with water, dry, and pulverize , immersed in a silicon dioxide suspension with a concentration of 0.5wt%, stirred for 3 hours at a stirring temperature of 90°C, and spray-dried to obtain a preform;

[0025] S2....

Embodiment 2

[0027] A method for preparing aluminum-iron composite microspheres, comprising the steps of: mixing 40kg of aluminum hydroxide, 2kg of ferric oxide, and 4kg of humic acid, grinding for 15 minutes, with a grinding pressure of 0.5Mpa, adding 1kg of polyvinyl alcohol, and 100kg of The 20wt% ethanol solution was stirred for 12 minutes at a stirring temperature of 165° C., and spray-dried at 225° C. to obtain aluminum-iron composite microspheres.

[0028] A method for preparing an adsorption-sedimentation agent, comprising the steps of:

[0029] S1. Stir 4kg of medical stone powder, 18kg of flax fiber, 1kg of urea, and 4kg of sodium hydroxide for 20 minutes at a stirring temperature of 80°C. Adjust the system to be neutral with a concentration of 0.9mol / L sulfuric acid solution, filter, wash with water, dry, and pulverize , immersed in a silica suspension with a concentration of 0.9wt%, stirred for 1 hour at a stirring temperature of 98°C, and spray-dried to obtain a preform;

[0...

Embodiment 3

[0032] A method for preparing aluminum-iron composite microspheres, comprising the steps of: mixing 34kg of aluminum hydroxide, 8kg of ferric oxide, and 2kg of humic acid, grinding for 30 minutes at a grinding pressure of 0.2Mpa, adding 1.7kg of polyvinyl alcohol, 70kg of concentration Stir for 35wt% ethanol solution for 8 minutes, the stirring temperature is 175°C, and spray dry at 215°C to obtain aluminum-iron composite microspheres.

[0033] A method for preparing an adsorption-sedimentation agent, comprising the steps of:

[0034] S1. Stir 10kg of medical stone powder, 12kg of flax fiber, 3kg of urea, and 2.5kg of sodium hydroxide for 35min at a stirring temperature of 74°C. Use a sulfuric acid solution with a concentration of 1.2mol / L to adjust the system to be neutral, filter, wash with water, and dry. Pulverize, immerse in a silica suspension with a concentration of 0.6wt%, stir for 2.5 hours at a stirring temperature of 92°C, and spray dry to obtain a preform;

[0035...

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PUM

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Abstract

The invention discloses a preparation method of aluminum-iron composite microspheres which comprises the following steps: mixing and grinding aluminum hydroxide, triiron tetroxide and humic acid, adding with polyvinyl alcohol and ethanol solution and mixing, and applying spray drying to obtain aluminum-iron composite microspheres. The invention also discloses a preparation method of adsorption settling agent which comprises the following steps: mixing medical stone power, linen fiber, urea and sodium hydroxide until the mixture is neutral; filtering and cleaning the mixture with water, dryingand smashing the mixture, and then immersing the mixture in silicon dioxide suspension and mixing and drying the mixture by spray drying to obtain the prefabricated material; evenly mixing polyethylene oxide, sodium ferrate, montmorillonite, calcined kaolin, fruit shell charcoal, the prefabricated material and the aluminum-iron composite microspheres, adding active silica and sodium alginate, stirring evenly, and drying to obtain the adsorption settling agent. The invention also discloses the application of the adsorption settling agent.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method of aluminum-iron composite microspheres, a preparation method and application of an adsorption-sedimentation agent. Background technique [0002] With the development of industrial production and the improvement of people's living standards, the volume of industrial sewage and urban domestic sewage is increasing at an alarming rate. One of the reasons for threatening the human living environment. [0003] Modern wastewater treatment methods are mainly divided into physical treatment methods. Physical treatment methods separate and recover suspended pollutants (including oil film and oil beads) in wastewater through physical action, but their treatment capacity is extremely limited. It is difficult to meet the actual requirements of timely treatment of industrial and domestic sewage. Contents of the invention [0004] Based on the technical problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F1/52C02F1/56C02F101/20C02F101/30C02F101/10C02F101/16
CPCB01J20/0229B01J20/0248B01J20/041B01J20/103B01J20/12B01J20/22B01J20/24B01J20/26B01J20/28009B01J20/28021C02F1/285C02F1/5245C02F1/5263C02F1/56C02F2101/105C02F2101/16C02F2101/20C02F2101/30
Inventor 晏继斌
Owner WUHU XINDA LANDSCAPING GRP
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