Method of cleaning scale and stains in water systems and related equipment
AssigneeH.E.R.C. Products Incorporated
InventorsJerome H. Ludwig, Duane W. Sampson
Life of this patent
Estimating the term…
Abstract
A method for removing scale and stains from the interior surfaces of a water-containing system having a reservoir, auxiliary equipment and piping, without having to drain the water from the system. The use of inhibited mineral acid allows the water to be circulated throughout the entire system, cleaning all interior surfaces without damaging them. Once scale and stains are removed, the water is neutralized.
Claims18
A method for removing scale and stains from the interior surfaces of a water-containing system having a reservoir, auxiliary equipment and piping without draining said system which comprises:
- acidifying the water by adding mineral acid and mineral acid inhibitor to the water in said system in an amount sufficient to remove the scale and stains;
- allowing the acidified water to remain in contact with said surfaces to dissolve the scale and stains, said mineral acid inhibitor contained in said acidified water in an amount to prevent the mineral acid from corroding said interior surfaces of the water-containing system;
- and
- neutralizing the water after scale and stains are removed by adding a basic compound in an amount sufficient to raise the pH without draining the water from said system.
A method for removing scale and stains from the interior surfaces of a water-containing swimming pool or spa system having a reservoir, auxiliary equipment and piping, without draining said system which comprises:
- acidifying the water by adding mineral acid and mineral acid inhibitor to the water in said system in an amount sufficient to remove the scale and stains;
- circulating the water through said system thereby allowing the acidified water to remain in contact with said surfaces to dissolve the scale and stains, said mineral acid inhibitor contained in said acidified water in an amount to prevent the mineral acid from corroding said interior surfaces of the water-containing system;
- and
- neutralizing the water after scale and stains are removed by adding a basic compound in an amount sufficient to raise the pH without draining the water from said system.
Dependencies are inferred from the claim text.