Systems and methods for controlling aquatic pests with sulfurous acid
US11174177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2019 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Dec 3, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/04
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of controlling aquatic pests: introducing sulfurous acid into water having the aquatic pests to treat the water until the aquatic pests are controlled, wherein the water is selected from open water, flowing water, or water open to the atmosphere. The aquatic pests are controlled within a control distance, which is within a distance of less than a mile from the site of introducing the sulfurous acid. The water can be open water or contained water, and the method comprises producing the sulfurous acid at a site of sulfurous acid introduction into the water. The aquatic pest is a zebra mussel, an Asiatic clam, a bryozoan or others. The method can include introducing the sulfurous acid so that the treated water has a pH of between about 6 and 6.5. The method can include introducing the sulfurous acid so that the treated water includes sulfites, bisulfites, and/or sulfur dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.