Conductive filter membrane and application thereof

A filter membrane and conductive layer technology, applied in membrane technology, semi-permeable membrane separation, water/sludge/sewage treatment, etc., can solve the problems of not being able to couple the electrochemical system well, reducing the effect of electric field, and low pollution rate. , to achieve various system situations, enhance the effect of the electric field, and reduce the effect of membrane fouling

Active Publication Date: 2015-01-21
TONGJI UNIV
View PDF8 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned research and inventions, the stainless steel wire mesh dynamic membranes used by scholars, conductive membranes made of conductive organic polymer materials, etc. are not commonly used ultrafiltration membranes and microfiltration membranes in sewage treatment. It has been applied in actual sewage treatment projects; when an electric field is applied near the membrane module, the membra

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
  • Conductive filter membrane and application thereof
  • Conductive filter membrane and application thereof
  • Conductive filter membrane and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Conductive filter membrane 4 adopts stainless steel wire mesh 10 to place on non-woven fabric 9, and then scrape coating PVDF and other casting film liquid 11 preparations (such as figure 2 shown).

[0026] A membrane bioreactor is a general membrane bioreactor plus an electrochemical system. That is, it includes the MBR water inlet system 1, the MBR water outlet system 6, the MBR aeration system 3, the MBR liquid level control system 2, the power supply system 7, the main biochemical reaction area and the electrochemical system in the general membrane bioreactor.

[0027] The MBR water inlet system 1 is a peristaltic pump water inlet, the MBR liquid level control system 2 is a water inlet tank with an overflow pipe, the MBR aeration system 3 uses perforated aeration, and the MBR water outlet system 6 uses a peristaltic pump to suck out water. The water is distributed artificially, and the transmembrane pressure is measured with a mercury manometer or a pressure gauge...

Embodiment 2

[0030]Utilize the system in embodiment 1 to process actual domestic sewage, the applied voltage is 1 V / cm voltage, and conductive film is 20 L / (m 3 h) Flux operation, when the transmembrane pressure reaches 30 kPa, it is regarded as the end of the operation. The cleaning period of the reactor without voltage is 15 days, while that of the reactor with applied voltage is 28 days.

Embodiment 3

[0032] Utilize the conductive membrane described in embodiment 1, be used in the A / O-MBR system to process high-salinity iron and steel cold rolling wastewater, the applied voltage is 2 V / cm voltage, conductive membrane with 15 L / (m 3 h) Flux operation, when the transmembrane pressure reaches 30 kPa, it is regarded as the end of the operation. The cleaning period of the reactor without voltage is 23 days, while that of the reactor with applied voltage is 41 days.

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 relates to a conductive filter membrane and its application. Based on manufacturing of a flat sheet membrane, a stainless steel screen is embedded to prepare a conductive membrane, and a conductive filter membrane is formed. The conductive filter membrane is directly used as a negative electrode, conductive corrosion-resistant materials such as graphite, stainless steel and the like are used as a positive electrode, and facilities such as a constant potential rectifier and the like are used along with a power supply so as to make the conductive filter membrane negatively charged. Electronegative pollutants in mixed liquor are obstructed by electrostatic repulsion so as to be deposited on the surface of the membrane. Meanwhile, the conductive filter membrane is directly used as a negative electrode, and a certain amount of H2O2 will be generated near the negative electrode (near the membrane) under the electrochemical action. By strong oxidizing ability, a certain amount of pollutants on the surface of the membrane can be removed by oxidation so as to enhance anti-pollution capacity. A routine filter membrane material determines practical applicability of the conductive filter membrane. The conductive filter membrane is directly used as the electrode to enhance fusion of an electrochemical system and an MBR system and strengthen effect of an electrical field.

Description

technical field [0001] The invention relates to a conductive filter membrane and its application, belonging to the field of urban sewage treatment. Background technique [0002] Membrane bioreactor (Membrane Bioreactor, hereinafter referred to as MBR) is a new and efficient sewage treatment technology. The membrane separation module is directly submerged in the reactor, and the water is pumped out by the pump. Due to the high-efficiency separation performance of the membrane, compared with the traditional activated sludge sewage treatment process, it has the advantages of small footprint, high volume load, and good effluent quality. It is considered to be one of the promising sewage treatment and reuse technologies. one. However, the practical promotion and application of MBR is restricted by technical problems such as membrane fouling and energy consumption. [0003] Membrane fouling in membrane bioreactors increases transmembrane driving pressure under certain flux cond...

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): B01D69/02B01D69/12B01D65/08C02F3/12
CPCY02W10/10
Inventor 王志伟黄健张骏尧苗妍孙亚东黄菲张星冉吴冰吴志超
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap