Acidic Electrolyzed Water Stability via Inorganic Acid Salts
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Solution Overview
Problem
Acidic electrolyzed water with a pH value of 2.7 or less has a short disinfecting power retention period, making long-term storage difficult.
Innovation Solution
Acidic electrolyzed water with an effective chlorine concentration of 15 ppm or greater and containing an acid salt of an inorganic acid, such as disodium dihydrogen pyrophosphate or sodium hexametaphosphate, which maintains disinfecting power for at least three weeks or more, allowing for long-term storage without significant loss of effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If highly acidic water (pH 2.7 or less) is used for disinfection, then strong disinfecting action is achieved, but disinfecting power retention period becomes short
Solution Approach 1:
The patent changes the pH parameter from 2.7 or less to 3.0 or more, and introduces acid salts of inorganic acids to modify the chemical composition. This parameter change allows the water to maintain disinfecting power for extended periods (at least three weeks or more) while remaining effective, resolving the contradiction between strong disinfecting action and retention period
Solution Approach 2:
The patent creates a composite solution by combining electrolyzed water with acid salts of inorganic acids (such as phosphoric acid, sulfuric acid, or hydrochloric acid salts). This composite approach allows the solution to maintain both strong disinfecting properties and extended stability, overcoming the limitation of pure highly acidic water
2Power
If highly acidic water is used for disinfection, then strong disinfecting effect is achieved, but long-term storage becomes difficult
Solution Approach 1:
By adjusting the pH to 3.0 or more and adding acid salts of inorganic acids, the patent transforms the storage characteristics of the electrolyzed water. The solution can now be stored for at least three weeks or more without significant loss of disinfecting power, and does not require dark storage conditions, making long-term storage easy while maintaining strong disinfecting effect
Solution Approach 2:
The patent transforms the electrolyzed water from a short-lived product requiring immediate use into a stable, long-lasting disinfectant that can be stored for extended periods. The addition of acid salts provides stability without requiring complex storage infrastructure, making it practical for long-term use
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 extends the disinfecting power of acidic electrolyzed water for an extended period, enabling easy long-term storage even in non-dark conditions, while maintaining its effectiveness as a disinfectant and cleanser.
Implementation Method 1
Acidic electrolyzed water is electrolyzed water obtained by electrolysis of a solution of water and an electrolyte such as sodium chloride or hydrochloric acid
Data Source
AI summary
To provide acidic electrolyzed water having disinfecting power for a long period of time (for example, six months or more), and a production method for this acidic electrolyzed water. The acidic electrolyzed water has an effective chlorine concentration equal to or greater than 15 ppm, and contains an acid salt of an inorganic acid.