Electrodeionization Boron Removal via Temperature Control
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Solution Overview
Problem
Current water treatment systems for semiconductor and liquid crystal device manufacturing require high initial costs to achieve effective boron removal, which is essential for producing ultrapure water, and existing methods do not efficiently enhance boron removal efficiency.
Innovation Solution
A water treatment system incorporating an electrodeionization apparatus with a deionization chamber and a concentration chamber, along with cooling means to adjust the temperature of the water within a specific range (10 to 23°C), enhances boron removal efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reverse-osmosis membrane apparatus or electrodeionization apparatus is used to remove boron, then boron removal capability is improved, but initial cost increases
Solution Approach 1:
The patent changes the temperature parameter of the feed water to be within 10-23°C to enhance boron removal efficiency by the electrodeionization apparatus, allowing better performance from existing equipment without requiring more expensive specialized systems
2Reliability
If cooling means is added to adjust water temperature, then boron removal efficiency is improved, but device complexity increases
Solution Approach 1:
The cooling means is designed to serve multiple functions: it cools the feed water to optimize boron removal, and can also cool the concentrated water from the electrodeionization apparatus, thereby achieving temperature control for different process streams with a single component
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 system achieves a significant increase in boron removal efficiency while maintaining energy efficiency and reducing operational costs by optimizing the temperature conditions for the electrodeionization process.
Implementation Method 1
an electrodeionization apparatus having a deionization chamber that deionizes water to be treated that contains boron
Implementation Method 2
cooling means to cool the water to be treated supplied to the deionization chamber or the concentrated water supplied to the concentration chamber
Data Source
AI summary
A water treatment system includes: EDI having deionization chamber that deionizes water that contains boron and concentration chambers in which concentrated water flows; and a cooler to cool the water supplied to deionization chamber or the concentrated water supplied to concentration chambers. Alternatively, water treatment system includes EDI having deionization chamber that deionizes water that contains boron, concentration chambers in which concentrated water flows, and electrode chambers in which electrode water flows; a cooler that adjusts temperature of the water or temperature of the concentrated water supplied to concentration chamber; and a controller that controls the cooler such that the cooler adjusts the temperature of the water supplied to deionization chamber or the temperature of the concentrated water supplied to the concentration chambers within a range of 10-23° C., based on the temperature of the water, temperature of treated water of EDI, the temperature of the concentrated water, or temperature of the electrode water.