Apparatus, products and processes for preventing the occurrence of rust stains resulting from irrigation systems using water containing iron ions

US7562664B2 · kind B2 · utility

Inventors

• Paul Wegner · San Carlos, US
• Frank J. Benasutti · Boca Raton, US

Key dates

• Filing date: Jun 23, 2008
• Grant date: Jul 21, 2009
• Expiry date: Jun 23, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F5/083
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Several products and processes for preventing the occurrence of rust stains resulting from irrigation systems using water having iron ions, such as well water, and for cleaning off rust stains resulting from the use of said irrigation systems are disclosed. In one embodiment, ammonium sulfate is mixed with well water and then this mixture is mixed with incoming well water being sprayed on the surfaces. In another embodiment, ammonium bisulfate is used for the removal of rust stains. Then ammonium sulfate is mixed with the incoming well water being sprayed in the next cycle, to prevent rust formation.