Dielectrophoresis hollow fiber membrane assembly

Abstract

The invention relates to a dielectrophoresis hollow fiber membrane assembly. A plate frame curtain type structure is formed by main frameworks and electrode mounting plates; the main framework is arranged up and down; the electrode mounting plates are arranged on the left and right sides; a hollow fiber membrane is vertically arranged between plate frames composed of the main frameworks and the electrode mounting plates; the electrodes are transversely and fixedly arranged between the plate frames in front of and at the back of the hollow fiber membrane at intervals; a water purifying port is arranged at each main framework; an electric wire output port is formed in each electrode mounting plate, and is lead out to be connected with an external power supply. With the dielectrophoresis technology, the separation of solid and liquid as well as the separation of solid and gas through the hollow fiber membrane, and pollution caused by the separation of the hollow fiber membrane in solid-gas or liquid-liquid mixed phase exist in solid particles (particles, colloidal particles, solute crystalline, bacteria, insoluble organic liquid drops and macromolecular organic matters) relative to continuous phase (liquid or gas); because of difference of dielectric polarization capabilities of solid particles and suspended continuous phase, dielectric electrophoretic force is used for pushing the solid particles to be away from the electrodes or absorbing the solid particles on the electrodes, and membrane pollution or membrane blockage in the hollow fiber membrane technology is reduced or even prevented so as to strengthen the hollow fiber membrane technology.

Description

Technical field [0001] The invention belongs to the technical field of separation, and relates to a multiphase (solid-liquid, solid-gas, liquid-liquid) hollow fiber membrane filtration and separation process, in particular a dielectrophoresis hollow fiber membrane module. Background technique [0002] Permeable membrane separation technology has rapidly developed into a multi-phase (mainly solid-liquid, solid-gas, liquid-liquid, etc.) separation in the industry due to its convenient operation, compact process equipment, high separation efficiency, and low energy consumption in the past 30 years. Important process method. However, in the permeable membrane filtration process, the inevitable problem of membrane fouling always exists, and it has become a fatal flaw in the practical application of this process. Membrane fouling is caused by the clogging or shrinking of the membrane pores due to the deposition or breeding of particles, colloidal particles, solute molecules, bacteria,...

AI Technical Summary

Problems solved by technology

However, this method is not suitable for industrial conditions of multi-ion complexity, and its high energy consumption hinders its widespread use in industry

In addition, the use of bare electrodes in electrophoresis also increases the possibility of short circuit and the risk of electric shock, and the electrochemical reaction on the electrode will not only lead to pH changes, but even produce toxic or environmentally polluting chemical by-products

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