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Flocculation-sterilization double-effect macromolecule and preparation method thereof

A polymer and flocculation technology, applied in the direction of flocculation/sedimentation water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., to achieve the effects of strong neutralization ability, enhanced interaction and cost reduction

Inactive Publication Date: 2010-06-23
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of bactericidal flocculant can not only overcome the shortcomings of secondary pollution caused by small molecule bactericide residues, but also make up for the limited number of immobilized bactericidal groups in surface contact disinfection technology. Use the effect to obtain a wide range of applications

Method used

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  • Flocculation-sterilization double-effect macromolecule and preparation method thereof
  • Flocculation-sterilization double-effect macromolecule and preparation method thereof
  • Flocculation-sterilization double-effect macromolecule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) According to the volume ratio of deionized water and diallylamine is 0.3:1, first add 15mL of deionized water and 50mL of diallylamine into a 250mL reactor with mechanical stirring, and then slowly add 6.0 mol / L hydrochloric acid 67mL, control the temperature not higher than 30°C until the oil phase disappears;

[0047] (2) Distill under reduced pressure at -0.095MPa at 55°C until there is no obvious distillate to obtain a colorless or slightly reddish viscous transparent solution, collect the distillate for reuse;

[0048] (3) Add deionized water to adjust the mass fraction of diallylamine hydrochloride to 72.5% in the solution obtained by distillation in step (2), add 43mgEDTA, stir and dissolve to form a reaction solution, nitrogen gas to drive oxygen for 30min, and then Slowly add 7.5mL of a solution containing 375.8mg of ammonium persulfate dropwise at 55°C, react for 4 hours, add 1.6mL of a solution containing 81mg of ammonium persulfate, raise the temperature...

Embodiment 2

[0055] (1) According to the volume ratio of deionized water and diallylamine is 0.1:1, first add 5mL of deionized water and 50mL of diallylamine into a 250mL reactor with mechanical stirring, then slowly add 4.0 mol / L hydrochloric acid 101mL, control the temperature not higher than 30°C until the oil phase disappears;

[0056] (2) Distill under reduced pressure at -0.095MPa at 50°C until there is no obvious distillate to obtain a colorless or slightly reddish viscous transparent solution, collect the distillate for reuse;

[0057](3) Add deionized water to adjust the mass fraction of diallylamine hydrochloride to 70% in the solution obtained by distillation in step (2), add 5.3mgEDTA, stir and dissolve to form a reaction solution, nitrogen gas to drive oxygen for 30min, and then Slowly add 10 mL of a solution containing 478.5 mg of ammonium persulfate dropwise at 50°C, react for 5 hours, add 1 mL of a solution containing 53 mg of ammonium persulfate, raise the temperature to 6...

Embodiment 3

[0064] (1) According to the volume ratio of deionized water and diallylamine is 0.2:1, first add 10mL of deionized water and 50mL of diallylamine into a 250mL reactor with mechanical stirring, and then slowly drop 7.0 mol / L hydrochloric acid 57.5mL, control the temperature not higher than 30°C until the oil phase disappears;

[0065] (2) Distill under reduced pressure at -0.095MPa at 55°C until there is no obvious distillate to obtain a colorless or slightly reddish viscous transparent solution, collect the distillate for reuse;

[0066] (3) Add deionized water to adjust the mass fraction of diallylamine hydrochloride to 78.2% in the solution obtained by distillation in step (2), add 53.5mgEDTA, stir and dissolve to form a reaction solution, and nitrogen gas is used to drive oxygen for 30min, and then Slowly add 11 mL of a solution containing 534.4 mg of ammonium persulfate dropwise at 55°C, react for 3 hours, add 1.3 mL of a solution containing 64 mg of ammonium persulfate, a...

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Abstract

The invention relates to a flocculation-sterilization double-effect macromolecule and a preparation method thereof. Diallyl amine and hydrochloric acid are adopted as raw materials to firstly synthesize diallyl amine hydrochloride, the diallyl amine hydrochloride is polymerized to poly-diallyl amine hydrochloride under the effect of a free radical initiator, and the poly-diallyl amine hydrochloride is reacted with epoxy long chain alkyl dimethyl ammonium halides which is obtained by Long-chain alkyl dimethyl amine and epoxy propane halogen in absolute ethyl alcohol in a water-alcohol mixed solvent to prepare the flocculation-sterilization double-effect macromolecule. The flocculation-sterilization double-effect macromolecule overcomes the weaknesses that the conventional flocculant does not have the sterilization function, the bactericide is lack of flocculation capacity, the flocculation and the sterilization are always separated in the application, the residual flocculant is reacted with the oxidization bactericide in the sterilization procedure to a harmful substance, and the bacteria dirty after the sterilization cannot be eliminated through the flocculation. The product of the invention can realize the flocculation and the sterilization functions at the flocculation procedure, so the traditional water treatment process can be simplified, and the cost can be reduced. The flocculation-sterilization double-effect macromolecule is suitable for being used as a processing agent for original water, waste water and drinking water.

Description

technical field [0001] The invention relates to a water treatment agent and a preparation method thereof, in particular to a flocculation-bactericidal double-effect macromolecule and a preparation method thereof. Background technique [0002] The harm of water pollution comes from the pollutants carried in the discharged sewage on the one hand, and the biological pollution on the other hand. Biological pollution is the assimilation and dissimilation of microorganisms and inorganic and organic substances in water, resulting in deterioration of water quality and generation of sediments. In industry, it often causes pipeline blockage, corrosion and damage to equipment, and reduces the efficiency of cooling towers, heat exchangers and other equipment; in life, it can cause diseases. According to statistics, 80% of human diseases are caused by water pollution, among which microbial pollution is the main killer causing diseases. Therefore, whether it is the purification of raw w...

Claims

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Application Information

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IPC IPC(8): C08F126/04C08F8/32C02F1/56C02F1/50
Inventor 刘立华肖体乐吴俊刘俊峰陈金文
Owner HUNAN UNIV OF SCI & TECH
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