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

Antipollution and antibacterial aromatic polyamide reverse osmosis composite membrane and preparation method

A technology of reverse osmosis composite membrane and aromatic polyamide, applied in the field of water treatment, can solve the problems of no universal applicability and different action mechanisms, and achieve the effect of mild conditions and simple operation

Active Publication Date: 2016-07-20
TIANJIN POLYTECHNIC UNIV
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problem of reverse osmosis membrane fouling, many researchers have done a lot of work to modify the surface of the membrane to improve its anti-fouling ability. However, due to the wide variety of pollutants in industrial wastewater, such as organic matter, inorganic salts and microorganisms, The mechanism of action of each pollutant is different, and many reported modification methods are only a one-step reaction to immobilize a functional group, that is, they can only alleviate a single pollution, and have no universal applicability

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
  • Antipollution and antibacterial aromatic polyamide reverse osmosis composite membrane and preparation method
  • Antipollution and antibacterial aromatic polyamide reverse osmosis composite membrane and preparation method
  • Antipollution and antibacterial aromatic polyamide reverse osmosis composite membrane and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An anti-pollution antibacterial aromatic polyamide reverse osmosis composite membrane preparation method, including the following steps (see figure 1 ):

[0036] (1) Wash the same low-pressure and low-energy aromatic polyamide reverse osmosis composite membrane (I) as in Comparative Example 1 with isopropanol and deionized water in sequence, and air dry naturally without light;

[0037] (2) The area treated in step (1) is 4×20cm 2 The polyamide reverse osmosis composite membrane is immersed in methanol, and 1mmol of hydroxyl-terminated aldehyde-terminated polyethylene glycol monomethyl ether (weight average molecular weight is 2000) (II), 1mmol sulfamethoxazole (III) and 1mmol iso Methyl cyanoacetate (IV), stirred at 25°C for 12h;

[0038] (3) Wash with deionized water to obtain anti-pollution and antibacterial aromatic polyamide reverse osmosis composite membrane.

Embodiment 2

[0040] A preparation method of anti-pollution and antibacterial aromatic polyamide reverse osmosis composite membrane includes the following steps:

[0041] (1) Same as step (1) of Example 1;

[0042] (2) The area treated in step (1) is 4×20cm 2 The polyamide reverse osmosis composite membrane was soaked in methanol, and 1mmol of hydroxyl-terminated aldehyde-terminated polyethylene glycol monomethyl ether (weight average molecular weight of 600), 1mmol sulfamethoxazole and 1mmol methyl isocyanoacetate were added in sequence. Stir at 25°C for 1h;

[0043] (3) Same as step (3) of Example 1.

Embodiment 3

[0045] A preparation method of anti-pollution and antibacterial aromatic polyamide reverse osmosis composite membrane includes the following steps:

[0046] (1) Same as step (1) of Example 1;

[0047] (2) The area treated in step (1) is 4×20cm 2 The polyamide reverse osmosis composite membrane is soaked in methanol, and 1mmol of hydroxyl-terminated aldehyde-formulated polyethylene glycol monomethyl ether (weight average molecular weight is 2000), 1mmol of tris-(2-aminoethyl)amine and 1mmol of isocyanide are sequentially added Methyl ethyl acetate, stirring at 25°C for 18h;

[0048] (3) Same as step (3) of Example 1.

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 antipollution and antibacterial aromatic polyamide reverse osmosis composite membrane. Please see the formula in the description, wherein B is an aromatic polyamide reverse osmosis composite membrane, and n is equal to 12-112. A preparation method includes the following steps that the aromatic polyamide reverse osmosis composite membrane is sequentially washed with isopropyl alcohol and deionized water, and light-avoiding natural airing is performed; the processed polyamide reverse osmosis composite membrane is soaked in methanol, methoxypolyethylene glycols with terminal hydroxyl groups in hydroformylation, bactericide with terminal amino groups and methyl isocyanoacetate are sequentially added, and stirring is performed for 1-24 h at 25-60 DEG C; washing is performed with deionized water, and the antipollution and antibacterial aromatic polyamide reverse osmosis composite membrane (V) is obtained. PEG long chains and the bactericide are immobilized on the membrane at the same time through a one-step reaction, operation is easy, conditions are mild, and the prepared antipollution and antibacterial aromatic polyamide reverse osmosis composite membrane can resist organic matter and inorganic matter pollution and also has the antibacterial performance.

Description

Technical field [0001] The invention belongs to the field of water treatment, and specifically relates to an anti-pollution antibacterial aromatic polyamide reverse osmosis composite membrane and a preparation method. Background technique [0002] With the rapid population growth and economic prosperity and development, water resources play an increasing role in human production and life, and they are the resources on which mankind depends for survival. However, people's excessive consumption and industrial behavioral pollution have led to a serious shortage of water resources, posing a serious threat to the already extremely scarce freshwater resources. Faced with such a severe situation, it is urgent to seek an efficient and energy-saving water resource regeneration technology. [0003] Reverse osmosis membrane separation technology is widely used in seawater and brackish water desalination, industrial wastewater treatment, ultrapure water preparation and other fields due to its ...

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
IPC IPC(8): B01D69/02B01D67/00
CPCB01D67/0093B01D69/02B01D2323/36B01D2325/48
Inventor 孟建强潘赢马六甲张宇峰
Owner TIANJIN POLYTECHNIC UNIV
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