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Magnetic powder modified polyferric chloride coagulant and preparation method thereof

A technology of polymerizing ferric chloride and coagulant, which is applied in chemical instruments and methods, magnetic field/electric field water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of unstable dispersion and reduce agglomeration , Improve removal efficiency, increase the effect of precipitation rate

Inactive Publication Date: 2020-08-28
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high specific surface area and strong magnetic attraction of magnetic nanoparticles make them tend to agglomerate in the compound system and cannot be dispersed stably

Method used

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  • Magnetic powder modified polyferric chloride coagulant and preparation method thereof
  • Magnetic powder modified polyferric chloride coagulant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of magnetic powder modified polyferric chloride coagulant of the present invention is obtained through the following process steps:

[0025] 1) prepare polyferric chloride solution, solution concentration 10g / L;

[0026] 2) Prepare polyacrylamide solution by ultrasonic + stirring method, the solution concentration is 10g / L;

[0027] 3) prepare EDTA-2Na solution, the solution concentration is 10g / L;

[0028] 4) Take 100mL of polyferric chloride solution with a concentration of 10g / L, pour it into a conical flask, add 2g of nano-magnetic Fe 3 o 4 Powder, so that the mass ratio of magnetic powder to ferric chloride is 2:1, stirred at 25°C for 30min, and the stirring rate is 120rpm;

[0029] 5) On the basis of step 4), take 10mL of polyacrylamide solution with a concentration of 10g / L, add it into the Erlenmeyer flask, stir at 25°C for 30min, and the stirring rate is 100rpm;

[0030] 6) On the basis of step 5), take 10mL of EDTA-2Na solution with a concentration ...

Embodiment 2

[0037] A kind of magnetic powder modified polyferric chloride coagulant of the present invention is obtained through the following process steps:

[0038] 1) prepare polyferric chloride solution, solution concentration 10g / L;

[0039] 2) Prepare polyacrylamide solution by ultrasonic + stirring method, the solution concentration is 10g / L;

[0040] 3) prepare EDTA-2Na solution, the solution concentration is 10g / L;

[0041] 4) Take 100mL of polyferric chloride solution with a concentration of 10g / L, pour it into a conical flask, add 3g of nano-magnetic Fe 3 o 4 powder, so that the mass ratio of magnetic powder to ferric chloride is 3:1, stirred at 25°C for 30min, with a stirring rate of 120rpm;

[0042] 5) On the basis of step 4), take 20mL of a polyacrylamide solution with a concentration of 10g / L, add it to a conical flask, and stir at 25°C for 30min at a stirring rate of 100rpm;

[0043] 6) On the basis of step 5), take 20 mL of EDTA-2Na solution with a concentration of 10...

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Abstract

The invention discloses a magnetic powder modified polyferric chloride coagulant and a preparation method thereof. The magnetic powder modified polyferric chloride coagulant is prepared from the following raw materials: nano magnetic Fe3O4 powder, a polyferric chloride solution, a polyacrylamide solution and a disodium ethylenediaminetetraacetate solution. The coagulant is excellent in sewage treatment effect, stable in performance, convenient to use and recyclable. The invention also discloses the preparation method of the magnetic powder modified polyferric chloride coagulant.

Description

technical field [0001] The invention relates to the field of water body purification, in particular to a magnetic powder modified polyferric chloride coagulant and a preparation method thereof. Background technique [0002] At present, the water quality of most water bodies in the world is generally deteriorating, and the deterioration of the water environment has become an important problem that cannot be ignored, and the direct discharge of urban sewage is an important cause of water pollution, so the treatment of urban sewage is increasingly being paid attention to by people. focus on. Adding coagulant to improve the effect of precipitation treatment, chemically enhanced primary treatment, compared with traditional biological treatment, has the characteristics of less natural conditions, less land occupation, short process, fast treatment speed, low infrastructure and operation costs, flexible operation, etc. , so it has become a very competitive method of urban sewage t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/48
CPCC02F1/5236C02F1/56C02F1/48
Inventor 上官宇飞张建吉翔
Owner POWERCHINA CHENGDU ENG
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