Electrokinetic Filtration Device Preventing Cake Layer Formation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The filtration rate in solid-liquid separation methods using direct contact with a filter medium can decrease due to clogging, leading to inefficiencies in particle separation.
Innovation Solution
A filtration device and system comprising multiple electrodes and a filter medium with apertures, where a third electrode faces the first electrode across a filter chamber, utilizing electrophoresis and electroosmosis to prevent cake layer formation and enhance filtration efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If particles are brought into direct contact with the filter medium for solid-liquid separation, then separation is achieved, but the filtration rate decreases due to clogging of the filter medium
Solution Approach 1:
The patent introduces an electric field as an intermediary mechanism between the particles and the filter medium. By applying voltage to electrodes, particles are moved through electrophoresis and moisture is expelled through electroosmosis, enabling separation without direct mechanical contact between particles and the filter medium, thus preventing clogging while maintaining separation effectiveness
Solution Approach 2:
The patent replaces the traditional mechanical filtration system with an electrokinetic system. Instead of relying on mechanical pressure and direct contact for particle separation, the invention uses electric fields to drive electrophoresis of particles and electroosmosis of liquid, substituting mechanical forces with electrical forces to achieve separation while maintaining high filtration rates
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly improves filtration rate by preventing cake layer formation and increasing particle concentration, reducing the need for frequent filter medium cleaning and allowing for size reduction of filtration equipment.
Implementation Method 1
a filter medium provided with a plurality of apertures and provided between the first electrode and the second electrode
Implementation Method 2
The solid-liquid separation using electrophoresis is a method of moving particles in a slurry by electrophoresis and bringing the particles into direct contact with a filter medium to separate the particles in the slurry
Implementation Method 3
The solid-liquid separation using electroosmosis is a method of applying voltage and pressure to a cake layer interposed between electrodes, and expelling moisture in the cake layer through a filter medium by electroosmosis
Data Source
AI summary
A filtration device includes a first electrode provided with a plurality of first openings. a second electrode provided with a plurality of second openings and provided to face one surface of the first electrode, a filter medium provided with a plurality of apertures and provided between the first electrode and the second electrode, a filter chamber provided in contact with the other surface of the first electrode and supplied with a material to be treated containing particles to be separated and a liquid, and a third electrode facing the first electrode across the filter chamber.