Conductive filter membrane and application thereof

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...

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 membrane module cannot be directly used as an electrode, and the electrochemical system and MBR system cannot be well coupled, reducing the effect of the electric field

In addition, more importantly, the dynamic membrane used in the above patent has the advantages of high flux and low pollution rate, and the significance of further controlling the pollution of the dynamic membrane by electrochemical methods is greatly reduced.

Images