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Inorganic polymer flocculant and preparation method thereof

An inorganic polymer and flocculant technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems that the three-dimensional structure cannot be formed, the removal rate can only reach 50%, and it is broken into small flocs again, which is not easy to achieve Re-crushing, no drying cost, fast settling effect

Inactive Publication Date: 2011-04-13
东莞市华中生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the traditional flocculant polyacrylamide can solve the above problems, because polyacrylamide dissolves in water, it has a long-chain structure and is basically a straight-chain structure, which cannot form a complex three-dimensional structure. Long-chain structure, so the density of the large flocs formed is not enough, and it is easy to be broken into small flocs again during the stirring process, resulting in a sedimentation time of up to 4-6 hours, although a large number of flocs are still broken after a long period of precipitation The existence of small flocs caused the sedimentation effect to be unsatisfactory, and the removal rate of particulate matter could only reach 50%. waste of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of an inorganic polymer flocculant, which comprises the following preparation steps:

[0048] A. Mix 10g water-soluble starch, 10g acrylic acid monomer, 30g sodium humate, 10g urea, and 5g polyvinyl alcohol, pour it into an electric heating furnace with a stirring device, stir at a speed of 100 rpm and Heating at a heating rate of 2°C / min, stop heating when the temperature reaches 130°C;

[0049] B, 2g ammonium persulfate and 2g sodium bisulfite are dissolved in 2g water to obtain an aqueous solution;

[0050] C. Add the aqueous solution obtained in step B into the mixed solution of A in 3 times, and stir evenly at a speed of 100 rpm;

[0051] D, continue to add 2g sodium carbonate to the mixed solution of step A and stir 3min with the speed of 100 revs / min, mixed solution forms foam body through the reaction of 10min, expansion;

[0052] E. Take out the foam, cool it, and crush it to below 100 mesh to obtain an inorganic polymer flocculant.

[0...

Embodiment 2

[0055] A preparation method of an inorganic polymer flocculant, which comprises the following preparation steps:

[0056] A. Mix 15g water-soluble starch, 15g acrylic acid monomer, 45g sodium humate, 20g urea, and 10g polyvinyl alcohol, pour it into an electric heating furnace with a stirring device, stir at a speed of 150 rpm and Heating at a heating rate of 4°C / min, and stop heating when the temperature reaches 150°C;

[0057] B, 5g ammonium persulfate and 4g sodium bisulfite are dissolved in 5g water, obtain aqueous solution;

[0058] C. Add the aqueous solution obtained in step B into the mixed solution of A in 5 times, and stir evenly at a speed of 150 rpm;

[0059] D, continue to add 6g sodium carbonate to the mixed solution of step A and stir 4min with the speed of 150 revs / min, mixed solution forms foam body through the reaction of 15min, expansion;

[0060] E. Take out the foam, cool it, and crush it to below 100 mesh to obtain an inorganic polymer flocculant.

[0...

Embodiment 3

[0063] A preparation method of an inorganic polymer flocculant, which comprises the following preparation steps:

[0064] A. Mix 20g water-soluble starch, 20g acrylic acid monomer, 40g sodium humate, 20g urea, and 10g polyvinyl alcohol, pour it into an electric heating furnace with a stirring device, stir at a speed of 200 rpm and Heating at a heating rate of 5°C / min, and stop heating when the temperature reaches 150°C;

[0065] B, 5g ammonium persulfate and 5g sodium bisulfite are dissolved in 5g water to obtain an aqueous solution;

[0066] C, adding the aqueous solution obtained in step B into the mixed solution of A in 4 times, and stirring evenly;

[0067] D, continue to add 5g sodium carbonate to the mixed solution of step A and stir 5min, mixed solution forms foam body through 18min reaction, expansion;

[0068] E. Take out the foam, cool it, and crush it to below 100 mesh to obtain an inorganic polymer flocculant.

[0069] The inorganic polymer flocculant prepared in ...

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Abstract

The invention belongs to the technical field of flocculants, in particular to an inorganic polymer flocculant and a preparation method thereof. The flocculant is prepared by carrying out solid-phase reaction in an electric heating furnace on the following components in parts by weight: 10-30 parts of water-soluble starch, 10-30 parts of acrylic monomer, 30-50 parts of sodium humate, 10-30 parts of urea, 5-15 parts of poval, 2-8 parts of ammonium persulfate, 2-8 parts of sodium hydrogensulfite and 2-8 parts of sodium carbonate. The natural water-soluble starch is used for replacing parts of the acrylic monomer serving as the raw material for preparing polyacrylamide, thus the cost is low, and the environment is not polluted; the natural water-soluble starch is soluble in the water to form a matter of a three-dimensional structure, after the matter absorbs micro flocs, unsaturated perssads are combined mutually, thus the flocs has higher compactedness, less possibility of being broken again and fast sediment speed; separation of the pollutants can be realized about 10 minutes, the removal rate of the particulate matters can reach 90%, and the operation load of equipment in the follow-up treatment technology can be effectively reduced; and the solid phase production mode is used, thereby saving drying cost and energy resources.

Description

technical field [0001] The invention belongs to the technical field of flocculants, and in particular relates to an inorganic polymer flocculant and a preparation method thereof. Background technique [0002] The problem of environmental pollution has been widely concerned all over the world. Countries have adopted various measures to reduce environmental pollution. Sewage treatment is one of the important means, and flocculants are needed for sewage treatment. The research and development of flocculants mainly focuses on polyaluminum chloride, polyferric chloride, and polyacrylamide. There are also a small amount of research on bauxite and biological flocculants, but none of them have been industrialized. The flocculants currently occupying the main market are polyacrylamide flocculants. [0003] For domestic sewage and most industrial sewage, the main pollution factor is mainly caused by particles (micro particles) in the sewage, and these particles are quite stable under...

Claims

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Application Information

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IPC IPC(8): C02F1/56
Inventor 钟旭胜李卓杰
Owner 东莞市华中生物科技有限公司