• 2025-07-09

Erosive water

Erosive water

Erosive water refers to water bodies with low pH values (typically <6.5) and low hardness, whose corrosiveness stems from the following characteristics:

Acidic components: Contains high concentrations of free carbon dioxide (CO₂) and hydrogen ions (H⁺)

Softening effect: Lacks natural corrosion inhibitors such as calcium and magnesium ions

Corrosion mechanism: Dissolving elements such as iron, copper, and zinc in metal pipelines through electrochemical reactions

Corrosion products and hazards

Formation of carbonate scale (CaCO₃) and metal salt deposits (such as greenish-blue copper rust)

Causing pipeline perforation, electrical damage, fabric discoloration, and equipment scaling

In human contact scenarios (such as bathing), hair quality and skin may be damaged

Swimming pool applications should be limited

Corrosive water is not suitable for swimming pools for the following reasons:

Water quality deterioration

Corrosion of metal components in the acceleration tank (ladders/pipes)

Dissolution of pool lining materials (such as cement calcium components)

Maintenance risks

Continuous addition of pH adjusters (sodium carbonate/sodium hydroxide) is required to maintain total alkalinity at 80-120 ppm

Excessive chemical agents can easily trigger secondary issues (such as the formation of chloramine)