Charged membrane device for water processing and usage method of device

Abstract

The invention relates to a charged membrane device for water processing. The device comprises a power supply, a membrane group device and a membrane assembly, wherein the membrane group device is groove-shaped, the upper portion and the lower portion of the membrane group device are open and the periphery of the membrane group device is sealed, the membrane assembly is arranged inside the membrane group device, and the outer surface of a hollow fiber membrane wire is coated with a layer of outer tubular supporting layer having a mesh multi-hole structure to form a hollow fiber membrane. When the device is applied in an immersion type membrane separation technology, under the action of current of the power supply, the hollow fiber membrane wire is shielded by the negative electrode of the outer tubular supporting layer, and pollutants with negative electricity can hardly pollute the hollow fiber membrane under the action of electrostatic repulsive force and the flocculation of an electrode dissolution flocculating agent, so that membrane pollution is controlled. The charged membrane device having an anti-pollution function and capable of generating the flocculating agent can control membrane pollution effectively and has the advantages of being high in stain resistance, high in strength of the membrane wire, free of addition of the flocculating agent, capable of purifying waterquality, practical and the like.

Description

【Technical field】 [0001] The present invention relates to charged membrane devices for water treatment. More specifically, the present invention relates to a charged membrane device with anti-pollution effect and self-generated flocculant and its application method, and the application of the device in submerged membrane separation technology. 【Background technique】 [0002] Membrane bioreactor (Membrane Bio-Reactor, MBR) is a new type of sewage treatment process developed by combining membrane separation technology with biodegradation principles. Effective interception of molecular organic substances, replacing the secondary sedimentation tank in the traditional process, has significant advantages such as high pollutant removal efficiency, good effluent quality, stable operation, convenient management, and small footprint, and has a broad application prospect. However, membrane fouling is unavoidable during membrane application. The research and application of MBR technol...

AI Technical Summary

Problems solved by technology

This patented technology has the advantages of low energy consumption and no need to apply a high-intensity electric field, but there is no flocculant in the application process, and the anti-pollution effect is achieved only by electric field force, while the electricity of pollutants is low and the electric field force is weak. Membrane technology often has aeration and stirring liquid during the application process, and the electrostatic force is easily fluctuated, which makes the anti-pollution effect unstable

[0005] US 2010 / 0051542 A1 proposes a sewage treatment system and method. This patented technology is to put the submerged membrane module into the internal cathode of the cylindrical electrode ring, and the anode can produce iron flocculant. The submerged membrane module can biochemically degrade, Under the action of electrocoagulation and membrane filtration, it plays an anti-pollution role. This patented technology can play a role in good water quality and resistance to membrane pollution. However, the problem in the application process of this technology is: the use of large-area cylindrical The electrode ring provides an electric field, making it occupy a large space in the membrane assembly, which will bring great inconvenience to the disassembly of the membrane assembly in the actual application process, and it is difficult to industrialize

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