Ion Exchanger Segmentation for Waste Fluid Purification
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Solution Overview
Problem
The life of ion exchangers used in waste fluid treating apparatuses is short, leading to poor economic efficiency due to their limited ability to purify waste fluids effectively from semiconductor cutting processes.
Innovation Solution
A waste fluid treating apparatus is designed with an ion exchanger comprising an anion exchange resin layer and a mixed resin layer, where the mixed resin layer is a combination of anion and cation exchange resins in a specific weight ratio, extending the ion exchanger's life by effectively converting waste fluids into pure water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional ion exchanger using a mixture of anion exchange resin and cation exchange resin is used, then the waste fluid can be purified to obtain pure water, but the life of the ion exchanger is short
Solution Approach 1:
The ion exchanger is segmented into two distinct layers: an upper anion exchange resin layer and a lower mixed resin layer. This segmentation allows each layer to perform its specific function optimally, with the anion exchange layer handling anion removal and the mixed resin layer handling both anion and cation removal, thereby extending the overall life of the ion exchanger while maintaining purification effectiveness
Solution Approach 2:
Different regions of the ion exchanger are given different qualities: the upper layer contains only anion exchange resin for selective anion removal, while the lower layer contains a mixture of anion and cation exchange resins. This local differentiation optimizes the purification process and extends the operational life by preventing premature exhaustion of the entire resin bed
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 apparatus extends the life of the ion exchanger by maintaining water resistivity at 14 MΩ·cm or higher for extended treatment times, allowing for more efficient reuse of purified water, with a significant improvement over conventional ion exchangers.
Implementation Method 1
anion exchange resin layer and a mixed resin layer, the mixed resin layer being composed of a mixture of anion exchange resin and cation exchange resin
Data Source
AI summary
A waste fluid treating apparatus including a pure water generating unit including an ion exchanger for purifying a fresh water sent by a fresh water pump to obtain a pure water. The ion exchanger includes a housing, an anion exchange resin layer accommodated in the housing, and a mixed resin layer accommodated in the housing. The anion exchange resin layer is composed of only anion exchange resin, and the mixed resin layer is composed of a mixture of anion exchange resin and cation exchange resin. The housing is provided with a fresh water inlet for introducing the fresh water into the anion exchange resin layer and a pure water outlet for discharging the pure water from the mixed resin layer.