Unlock instant, AI-driven research and patent intelligence for your innovation.

Separation membrane anti-pollution device and separation membrane anti-pollution system

A separation membrane and anti-pollution technology, applied in the field of membrane separation, can solve the problems of shortened service life of separation membrane, limitation of membrane separation technology, increase of operating cost, etc., to slow down deposition, alleviate concentration polarization, and prolong use The effect of longevity

Active Publication Date: 2019-06-14
UNIV OF SCI & TECH OF CHINA
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the development of membrane separation technology has long been limited by the problem of membrane fouling.
Membrane fouling is usually caused by the accumulation of pollutants on the surface of the separation membrane, causing a decrease in membrane flux, resulting in increased operating costs and a shortened service life of the separation membrane

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
  • Separation membrane anti-pollution device and separation membrane anti-pollution system
  • Separation membrane anti-pollution device and separation membrane anti-pollution system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] In the separation membrane anti-pollution system provided in this embodiment, the membrane separation device 5 is a forward osmosis membrane separation device, the base layer of the separation membrane 15 is polyethersulfone, the active layer of the separation membrane 15 is a polyamide layer, and the separation membrane 15 is The base layer and the active layer have an asymmetric structure, the thickness of the separation membrane 15 is 150 μm, and the effective membrane area of ​​the separation membrane 15 is 20.02 cm 2 . The feed liquid and the draw liquid flow on both sides of the separation membrane 15 in a staggered manner. The surface flow velocity of the separation membrane 15 is 0.06m / min. frequency vibration. The second container 18 storing the drawing solution is placed on the balance 17, a value is recorded every 2 minutes, and the data is transmitted to the terminal software through the connected computer. Of course, it is also possible to choose to recor...

Embodiment 2

[0071] The water flux test of the separation membrane 15 is carried out by using the separation membrane anti-pollution system provided in Example 1, specifically:

[0072] Connect the power supply 24 to the control module 1, adjust its output voltage to 5-12V, and the reciprocating motor drives the active part 11 to make a vertical reciprocating movement relative to the flow cell 20. Under the action of the active limit structure, the active part 11 The maximum displacement is ±1mm. Correspondingly, the maximum displacement of the follower is ±1 mm, and the vibration amplitude of the separation membrane 15 is not greater than 1 mm.

[0073] First, deionized water is used as the feed liquid and the draw liquid, and the ionized water flows on both sides of the separation membrane 15 for 6-8 hours to ensure the stability of the above-mentioned membrane separation device 5 . Then take deionized water as the treatment object, make 500mL of deionized water circulate and flow on th...

Embodiment 3

[0077] The membrane fouling test of the separation membrane 15 was carried out using the separation membrane anti-fouling system provided in Example 1, specifically:

[0078] Connect the power supply 24 to the control module 1, adjust its output voltage to 5-12V, and the reciprocating motor drives the active part 11 to make a vertical reciprocating movement relative to the flow cell 20. Under the action of the active limit structure, the active part 11 The maximum displacement is ±1mm. Correspondingly, the maximum displacement of the follower is ±1 mm, and the vibration amplitude of the separation membrane 15 is not greater than 1 mm.

[0079]First, deionized water is used as the feed liquid and the draw liquid, and the ionized water flows on both sides of the separation membrane 15 for 6-8 hours to ensure the stability of the above-mentioned membrane separation device 5 . Then, take 250mg / L protein-rich waste water as the treatment object, specifically, adopt 500mL protein-r...

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 a separation membrane anti-pollution device and a separation membrane anti-pollution system. The separation membrane anti-pollution device comprises a driven part capable of being fixed to a separation membrane, a driving part capable of applying magnetic force to the driven part, and a driving module for driving the driving part to move so as to drive the separation membrane to vibrate through the driven part. According to the separation membrane anti-pollution device, the driving part is driven by the driving module to move; the driving part can apply magnetic force to the driven part, the driven part can move along with the driving part, so that the separation membrane fixedly connected with the driven part is driven to vibrate, deposition of pollutants on the surface of the separation membrane is hindered through vibration of the separation membrane, the pollutants deposited on the separation membrane can be cleaned, deposition of the pollutants on the surface of the separation membrane is effectively slowed down, and the service life of the separation membrane is prolonged; meanwhile, liquid is turbulent through vibration of the separation membrane, themass transfer condition of the separation membrane is improved, the concentration polarization phenomenon is relieved, and the water flux of the separation membrane is improved.

Description

technical field [0001] The invention relates to the technical field of membrane separation, and more specifically relates to a separation membrane anti-pollution device and a separation membrane anti-pollution system. Background technique [0002] Membrane separation technology has good application prospects in sewage treatment, wastewater reuse, seawater desalination and other occasions. However, the development of membrane separation technology has long been limited by the problem of membrane fouling. Membrane fouling is usually caused by the accumulation of pollutants on the surface of the separation membrane, causing a decrease in membrane flux, resulting in increased operating costs and a shortened service life of the separation membrane. Therefore, how to effectively alleviate membrane fouling is an urgent problem to be solved by those skilled in the art. Contents of the invention [0003] The purpose of the present invention is to provide an anti-pollution device ...

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): B01D65/08B01D65/10
Inventor 俞汉青张静霄李宇昇
Owner UNIV OF SCI & TECH OF CHINA