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A Cationic Composite Magnetic Flocculant and Its Application in Wastewater Treatment

A composite magnetic, cationic technology, used in flocculation/sedimentation water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc. problem, to achieve the effect of high turbidity removal rate

Active Publication Date: 2019-07-12
HUAIHAI INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation of the compound flocculant is complex and requires high quality personnel

Method used

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  • A Cationic Composite Magnetic Flocculant and Its Application in Wastewater Treatment
  • A Cationic Composite Magnetic Flocculant and Its Application in Wastewater Treatment
  • A Cationic Composite Magnetic Flocculant and Its Application in Wastewater Treatment

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Embodiment Construction

[0017] A cationic composite magnetic flocculant, in the process of copolymerization of dimethyl diallyl ammonium chloride and acrylamide monomer, the introduction of oleic acid modified Fe 3 o 4 Particles, a new type of composite magnetic flocculant synthesized by adding initiators.

[0018] The specific operation is as follows:

[0019] Weigh the acrylamide monomer and dimethyl diallyl ammonium chloride according to the solid-liquid ratio of 7-10g / ml, and dissolve them in 40-60 times distilled water;

[0020] Then add Fe modified by oleic acid 3 o 4 Particles, Fe 3 o 4 The mass ratio of particles to acrylamide monomer is 1:20-30;

[0021] After stirring evenly, nitrogen gas is introduced. After 30 minutes, the initiator is added, and it is continuously stirred in a water bath at 40-50°C for 4-8 hours; the product is washed with acetone for 3 times, dried in vacuum and crushed to obtain a cationic composite magnetic flocculant.

[0022] The technical problem to be solve...

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Abstract

The invention discloses a cationic composite magnetic flocculant. During the copolymerization of dimethyl diallyl ammonium chloride and acrylamide monomer, Fe3O4 particles modified through oleic acid are introduced, and after an initiator is added, a novel composite magnetic flocculant CMF is synthesized. FTIR, XRD, TG and SEM analysis show that Fe3O4 is uniformly dispersed in the CMF in a magnetic core manner, the CMF contains DMDAAC and AM characteristic functional groups, and the mass fraction of organic matter is 62 percent. In a coagulation and sedimentation experiment for simulating wastewater through kaolin, compared with polyacrylamide and aluminum polychlorid, the CMF, serving as a flocculant, obtains a higher turbidity removal rate within a shorter period of settling time.

Description

technical field [0001] The invention relates to a water treatment technology, in particular to a cationic composite magnetic flocculant and its application in waste water treatment. Background technique [0002] Coagulation-sedimentation process is widely used in water treatment and wastewater treatment. At present, in domestic and foreign petrochemical, iron and steel, metallurgy, papermaking, food, printing and dyeing, textile and brewing and other industries, about 55% to 75% of wastewater treatment uses coagulation sedimentation, and almost 100% of water supply uses mixed Coagulation sedimentation method as a means of water purification. The technical core of the coagulation-sedimentation method is the application of the flocculant, and the performance of the flocculant determines the quality of the water treatment effect and the operation cost of the coagulation process. Therefore, the research and development of economical, efficient and safe water treatment floccula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56C02F1/52
CPCC02F1/5236C02F1/56
Inventor 周正单爱琴李佳赵宏赵斌元
Owner HUAIHAI INST OF TECH
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