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

Bacteriostatic ultrafiltration membrane assembly

A technology of ultrafiltration membranes and components, applied in ultrafiltration, membrane, membrane technology and other directions, can solve the problems of increasing time and labor costs, affecting the performance of ultrafiltration membranes, and cumbersome regular cleaning, and achieving good biocompatibility and maintenance. Simple and efficient effect

Active Publication Date: 2019-12-10
WUHAN AQUCELL MEMBRANE TECH
View PDF25 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of graft modification is easy to affect the performance of the ultrafiltration membrane, and can only reduce the influence of bacteria, and cannot be completely avoided. Regular cleaning is more cumbersome, which increases time and labor costs, and is not conducive to long-term promotion.

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
  • Bacteriostatic ultrafiltration membrane assembly
  • Bacteriostatic ultrafiltration membrane assembly
  • Bacteriostatic ultrafiltration membrane assembly

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] In a specific embodiment, the preparation method of the antibacterial layer 3 comprises the following steps:

[0042] Step 1, mixing recycled pulp, cellulose acetate and starch under dry conditions, putting them into a homogenizer and mixing evenly to obtain the first mixture;

[0043] Step 2, adding ethanol to the first mixture, stirring at room temperature for 10-30min, to obtain pulp;

[0044] Step 3, the paper pulp is fished, dried and cut to form raw paper;

[0045] Step 4: Mix octacosanol, juglone and ethanol, stir and dissolve to obtain a spray solution, spray the spray solution on the surface of the raw paper, after spraying, dry at 50-70°C for 1-2 hours to obtain an antibacterial layer .

[0046] In a specific embodiment, the amount of ethanol used in step two and step four is the same.

Embodiment 1

[0048] Preparation of ultrafiltration membrane layer: Weigh 100g polysulfone, 30g polyethylene glycol and 700g N-methylpyrrolidone, mix and stir for 20min at room temperature to obtain a casting solution, place the casting solution in a vacuum defoamer for 1 hour, degassing After soaking, the film is scraped and formed by a flat film scraping machine and then dried to obtain an ultrafiltration membrane with a thickness of 200 μm.

[0049] Preparation of antibacterial layer: take 100g recycled paper pulp, 20g cellulose acetate and 80g starch, mix and stir in a homogenizer for 20min to obtain the first mixture, add 250g ethanol to the first mixture, and stir at room temperature for 10min to obtain paper pulp, After the paper pulp is scooped, air-dried and sheared to form raw paper, 10g of octacosanol, 10g of juglone and 250g of ethanol are weighed, stirred and dissolved to obtain a spraying liquid, which is sprayed on the surface of the raw paper, and after the spraying is comple...

Embodiment 2

[0052] Preparation of ultrafiltration membrane layer: Weigh 250g of polyethersulfone, 80g of polyvinylpyrrolidone and 850N,N-dimethylformamide, mix and stir for 30min at room temperature to obtain a casting solution, and place the casting solution in a vacuum defoamer After degassing for 2 hours, after the degassing is completed, the membrane is scraped and formed by a flat-plate scraping machine and then dried to obtain an ultrafiltration membrane. The thickness of the ultrafiltration membrane is 200 μm.

[0053] Prepare antibacterial layer: take 200g regenerated pulp, 50g cellulose acetate and 200g starch, mix and stir in a homogenizer for 30min to obtain the first mixture, add 350g ethanol to the first mixture, stir at room temperature for 30min to obtain paper pulp, After the paper pulp is scooped, air-dried and cut to form raw paper, weigh 50g of octacosanol, 30g of juglone and 350g of ethanol, stir and dissolve to obtain a spraying liquid, and spray the spraying liquid on...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a bacteriostatic ultrafiltration membrane assembly. The ultrafiltration membrane assembly comprises an ultrafiltration membrane layer, a blocking layer and a bacteriostatic layer, wherein the ultrafiltration membrane layer, the blocking layer and the bacteriostatic layer are sequentially arranged closely. When in use, the bacteriostatic layer faces to sewage to be treated; and when the ultrafiltration membrane assembly is required to be maintained, the ultrafiltration membrane assembly can be maintained by means of replacing the bacteriostatic layer, the maintenance modeis simple and efficient, and thus, the time cost and labor cost of an enterprise are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to a bacteriostatic ultrafiltration membrane module. Background technique [0002] As the most energy-saving and environmentally friendly separation and concentration technology, membrane separation technology has very broad development prospects, especially for the current sewage treatment field, ultrafiltration membranes can filter out most of the harmful substances in sewage. [0003] However, there are a large number of bacteria in the sewage. During the long-term filtration process, the bacteria in the sewage will accumulate on the surface of the ultrafiltration membrane, and the ultrafiltration membrane is mostly made of high-molecular organic materials. If the bacteria accumulate for a long time and the temperature and pH are suitable , Bacteria will cause harm to the ultrafiltration membrane, and in severe cases, it will cause structural damage to the ultr...

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): B01D61/18B01D63/00C02F1/44B01D71/82B01D71/68B01D69/02B01D67/00
CPCB01D61/18B01D63/00C02F1/444B01D71/82B01D71/68B01D69/02B01D67/0093B01D2325/48
Inventor 陈泉学
Owner WUHAN AQUCELL MEMBRANE TECH
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