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Magnetic polyacrylamide cationic flocculant with super-high molecular weight and method for preparing magnetic polyacrylamide cationic flocculant with super high molecular weight

A polyacrylamide cation, ultra-high molecular weight technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problem that the flocculation treatment effect cannot be satisfied well, and reduce the amount of flocculated sludge, strengthen the separation effect, reduce The effect of floc moisture content

Active Publication Date: 2015-03-04
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the flocculation and sedimentation method is an economical and simple water treatment method commonly used at present, the flocculation treatment effect cannot better meet the increasingly stringent water treatment standards, and the research on flocculants combined with other solid-liquid separation technologies has been widely focus on

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of the ultrahigh molecular weight magnetic polyacrylamide cationic flocculant of the present embodiment comprises:

[0033] (1) Preparation of magnetic collagen monomer: Add 20% collagen mass surfactant to the above collagen hydrolyzate, stir and disperse at 30°C for 30 minutes. After cooling to room temperature, add 30% Fe of collagen 3 o 4Magnetic fluid, ultrasonic dispersion for 5 minutes, then slowly add isopropanol 10 times the amount of collagen under rapid stirring, and then ultrasonically disperse for 5 minutes. Add 25% glutaraldehyde aqueous solution with a mass concentration twice the amount of collagen, and stir rapidly for 60 minutes to prepare a composite suspension of Fe3O4 magnetic fluid and collagen hydrolyzate. After the suspension was subjected to magnetic separation, the obtained solid was washed several times with isopropanol and dried at 20°C for use.

[0034] (2) Comonomer mixing: Weigh a certain amount of acrylamide and d...

Embodiment 2

[0038] The preparation method of the ultrahigh molecular weight magnetic polyacrylamide cationic flocculant of the present embodiment comprises:

[0039] (1) Preparation of magnetic collagen monomer: Add a surfactant with 50% collagen mass to the above collagen hydrolyzate, stir and disperse at 60°C for 60 minutes. After cooling to room temperature, add Fe with 60% collagen content 3 o 4 Magnetic fluid, ultrasonic dispersion for 15 minutes, then slowly add isopropanol 30 times the amount of collagen under rapid stirring, and then ultrasonically disperse for 15 minutes. Add a 25% aqueous solution of glutaraldehyde with a mass concentration 6 times the amount of collagen, and stir rapidly for 90 minutes to obtain Fe 3 o 4 Complex suspension of ferrofluid and collagen hydrolyzate. After the suspension was subjected to magnetic separation, the obtained solid was washed several times with isopropanol and dried at 50°C for use.

[0040] (2) Comonomer mixing: Take a certain amou...

Embodiment 3

[0044] The preparation method of the ultrahigh molecular weight magnetic polyacrylamide cationic flocculant of the present embodiment comprises:

[0045] (1) Preparation of magnetic collagen monomer: In the above collagen hydrolyzate, add a surfactant of 35% of the collagen mass, stir and disperse for 45 minutes at a temperature of 45°C. After cooling to room temperature, add Fe with 45% collagen content 3 o 4 Magnetic fluid, ultrasonically disperse for 10 minutes, then slowly add isopropanol 20 times the amount of collagen under rapid stirring, and then ultrasonically disperse for 10 minutes. Add 25% glutaraldehyde aqueous solution with a mass concentration 4 times the amount of collagen, and stir rapidly for 75 minutes to obtain Fe 3 o 4 Complex suspension of ferrofluid and collagen hydrolyzate. After the suspension was subjected to magnetic separation, the obtained solid was washed several times with isopropanol, dried at 35° C. and then used.

[0046] (2) Comonomer mi...

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Abstract

The invention relates to a magnetic polyacrylamide cationic flocculant with a super-high molecular weight and a method for preparing the magnetic polyacrylamide cationic flocculant with the super-high molecular weight. The magnetic cationic flocculant with viscosity-average molecular weight being more than 1*10<7> is prepared by initiating copolymerization of a collagen combined with a magnetic fluid Fe3O4 and acrylamide and cationic monomer under the initiation of a composite initiator. The magnetic polyacrylamide cationic flocculant with the super-high molecular weight and the method for preparing the magnetic polyacrylamide cationic flocculant with the super high molecular weight have the advantages that the magnetic polyacrylamide cationic flocculant with the super-high molecular weight is prepared by initiating monomer copolymerization through the composite redox initiator; the flocculant is given with magnetism, and the solid-liquid separation effect of flocculation treatment is enhanced by using the magnetic action; and the magnetic polyacrylamide cationic flocculant with the super-high molecular weight has good properties of charge neutralization, bridging, sweeping and the like.

Description

(1) Technical field [0001] The invention relates to a flocculant, in particular to an ultrahigh molecular weight magnetic polyacrylamide cationic flocculant for water purification and sewage treatment and a preparation method thereof. (2) Background technology [0002] Water resources are important natural resources. my country is relatively short of water resources, and the per capita water resources are 1 / 4 of the world's average level. In recent decades, with the rapid development of manufacturing and processing industries, industrial water consumption has increased sharply, and the amount of industrial wastewater generated has increased rapidly. In the face of the shortage of water resources and the rapid increase in the amount of industrial wastewater, it is necessary to strengthen the research on industrial wastewater treatment technology and improve the utilization rate of water resources. [0003] Flocculation is an economical and simple water treatment method commo...

Claims

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Application Information

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IPC IPC(8): C02F1/56C08F289/00C08F220/56C08F220/34C08F226/02C08F8/42C08F4/40
CPCC02F1/56C08F4/40C08F8/42C08F220/34C08F220/56C08F226/02C08F289/00
Inventor 王晨王西奎李书平于雅东王旗
Owner QILU UNIV OF TECH
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