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U8AA5540012
5. PRINCIPLE OF STRONG ACID WATER GENERATION
Strong acid water is generated at the anode inside the Electrolytic Cell where the membrane
divides the anode and cathode, by electrolyzation of 0.1% or less salt water. See the figure
below.
At the anode, chlorine ion (Cl
-
) generates chlorine gas which reacts with H2O to generate
chloride and hypochlorous acid (HOCl). H2O is also electrolyzed at the anode to become
oxygen (O2) and hydrogen ion (H
+
). Eventually, the anolyte pH falls below 2.7, the oxidation-
reduction potential (ORP) rises significantly, and the available chlorine concentration reaches
20 - 60 mg/L.
[Reaction Formula]
Anode H2O 1/2O2 + H
+
+ 2e
-
2Cl
-
Cl2 + 2e
-
Cl2(aq) + H2O HCl
+ HOCl
Cathode H2O + 2e
-
1/2H2 + OH
-