Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic amphoteric polymeric flocculant and preparation method

A technology of amphoteric polymer and flocculant, which is applied in the direction of flocculation/sedimentation water/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. It can solve the problems of low storage stability and non-compliance with green chemistry, and achieve obvious economical Benefit, suitable for popularization and application, simple preparation method

Inactive Publication Date: 2012-09-26
SICHUAN NORMAL UNIVERSITY
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]2. The Mannich reaction requires the use of a large amount of organic solvents, which does not conform to the principles of green chemistry;
[0008] 3. 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic amphoteric polymeric flocculant and preparation method
  • Organic amphoteric polymeric flocculant and preparation method
  • Organic amphoteric polymeric flocculant and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Step 1. Add 2g of fumaric acid (salt), 0.006g of the mixture of polymerization assistant sodium edetate and sodium fluoride and 15g Stir the distilled water to dissolve, vacuumize twice, each time for 5 minutes, and pass nitrogen once in the middle, for 5 minutes;

[0052] Step 2. Add 1g of bifunctional monomer to 16g of methacryloyloxyethyltrimethylammonium halide, dilute with 4g of distilled water and mix evenly, put it into the dropping funnel (a), dilute 3g of methacrylic acid-N with 12g of distilled water , N-diethylamino ethyl ester into the dropping funnel (b);

[0053] Step 3, under the condition of continuous stirring and nitrogen flow, add the mixture of 0.17g 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 40 ℃, adjust the pH of the aqueous solution to 4, drop the mixture of methacryloyloxyethyltrimethylammonium halide and difunctio...

Embodiment 2

[0056] Step 1. Add 4g of fumaric acid (salt), 0.045g of the mixture of polymerization assistant sodium edetate and sodium fluoride and 30g Stir the distilled water to dissolve, vacuumize twice, each time for 5 minutes, and pass nitrogen once in the middle, for 5 minutes;

[0057] Step 2. Add 2g of bifunctional monomer to 30g of methacryloyloxyethyltrimethylammonium halide, dilute with 8g of distilled water and mix evenly, put it into the dropping funnel (a), dilute 6g of methacrylic acid-N with 25g of distilled water , N-diethylamino ethyl ester into the dropping funnel (b);

[0058] Step 3, under the condition of continuous stirring and nitrogen flow, add the mixture of 0.36g 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 6, drop the mixture of methacryloyloxyethyltrimethylammonium halide and bifunctio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an organic amphoteric polymeric flocculant and a preparation method. The amphoteric polymeric flocculant is a copolymer formed by copolymerizing three monomers of acryloyloxyethyl trimethyl ammonium halide, acrylic acid-N, and N-dimethylamino ethyl ester and sorbic acid (salt), and difunctional monomer diacrylate ester. In a preparation process, a redox initiator, an inorganic peroxide initiator and a reagent and additive in polymerization are used simultaneously, so that the conversion rate of the monomers is improved, and the residual monomer is reduced; the preparation of the flocculant is simple, and the flocculant can be used directly; and the prepared flocculant has the advantages of less dosage, large flocculate diameter, quick sedimentation and the like.

Description

technical field [0001] The invention relates to an 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) treatment and sl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F11/14C08F220/34C08F222/02C08F222/10C08F4/40C08F4/30
Inventor 朱明丁瑶张静
Owner SICHUAN NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com