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Water-solubility organic amphoteric polymeric flocculant and preparation method thereof

An amphoteric polymer and water-soluble technology, which is applied in flocculation/precipitation water/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problems of non-compliance with green chemistry and low storage stability, and is suitable for promotion Application, obvious economic benefit, effect of reducing residue

Inactive Publication Date: 2012-10-03
SICHUAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 2. The Mannich reaction needs to use a large amount of organic solvents, which does not conform to the principle of green chemistry
[0008]3. The polyacrylamide amphoteric polymer flocculant modified by Mannich reaction is not suitable for treating wastewater with high pH, ​​and its storage stability is not high;

Method used

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  • Water-solubility organic amphoteric polymeric flocculant and preparation method thereof
  • Water-solubility organic amphoteric polymeric flocculant and preparation method thereof
  • Water-solubility organic amphoteric polymeric flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Step 1, step 1, add a mixture of 3g of crotonic acid (salt), 0.006g of polymerization assistant sodium edetate and potassium fluoride into a 250mL four-necked reaction flask equipped with a thermometer, a nitrogen device and a stirrer Stir and dissolve with 17g of distilled water, vacuumize twice, each time for 5 minutes, and pass nitrogen once in the middle, for 5 minutes;

[0052] Step 2. Dilute 16g of methacryloyloxyethyltrimethylammonium halide with 2g of distilled water and put it into the dropping funnel (a), add 2g of bifunctional mono Bulk diacrylate was diluted with 14g of distilled water and mixed evenly into the dropping funnel (b);

[0053] Step 3, under the condition of continuous stirring and nitrogen passage, add the mixture of 0.2g redox initiator potassium persulfate and sodium bisulfite at one time, the ratio of the amount of oxidizing agent to reducing agent is 1: 0.6, and the temperature is raised to 35 ℃, adjust the pH of the aqueous solution to 4,...

Embodiment 2

[0056] Step 1, step 1, add 4.5g of crotonic acid (salt), 0.008g of polymerization assistant sodium edetate and potassium fluoride in a 250mL four-necked reaction flask equipped with a thermometer, a nitrogen device and a stirrer Stir the mixture and 25g of distilled water to dissolve, vacuumize twice for 5 minutes each time, and pass nitrogen once in the middle for 5 minutes;

[0057] Step 2. Dilute 24g of methacryloyloxyethyltrimethylammonium halide with 3g of distilled water and put it into the dropping funnel (a), add 3g of bifunctional group to 4.5g of N,N-dimethylaminoethyl methacrylate Monomer diacrylate is diluted with 21g of distilled water and mixed evenly into the dropping funnel (b);

[0058] Step 3, under the condition of continuous stirring and nitrogen flow, add the mixture of 0.3g redox initiator potassium persulfate and sodium bisulfite at one time, the ratio of the amount of oxidizing agent to reducing agent is 1: 0.5, and the temperature is raised to 35 ℃, a...

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Abstract

The invention discloses a water-solubility organic amphoteric polymeric flocculant and a preparation method thereof. The water-solubility organic amphoteric polymeric flocculant is a polymer formed by polymerizing three monomers, i.e. methylacryloxyethyl trimethyl ammonium halide, methacrylic acid-N, N- dimethylamino ethyl ester and crotonic acid (salt) and a bifunctional monomer, i.e. diacrylate. An oxidation reduction initiator, an organic peroxide initiator and a polymerization additive are used in the preparation process so that the conversion rates of the monomers are increased, and the residual monomers are reduced; the flocculant is simple to prepare and operate and can be directly used; and the prepared flocculant has the advantages of few use level, large diameter of flocs, fast sedimentation and the like.

Description

technical field [0001] The invention relates to a water-soluble organic amphoteric polymer flocculant and a preparation method. Background technique [0002] Water is the basic material for human survival and social development. At present, the water environment in the world is facing the problems of water resource shortage, excessive consumption and serious pollution. The World Health Organization (WHO) survey shows that 80% of human diseases are related to unsafe water quality. China is a country with abundant water resources, but at the same time it is a country with severe water shortage, extremely low utilization rate of water resources and serious water pollution. These three factors seriously restrict people's normal life and sustainable economic development. Therefore, effective treatment and reuse of waste water (sewage) is an inevitable way to solve limited water resources to meet people's growing production and living needs. In the process of waste (sewage) tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F11/14C08F220/34C08F220/04C08F222/10C08F4/40C08F4/30
Inventor 朱明丁瑶
Owner SICHUAN NORMAL UNIVERSITY
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