Ozone/UV combination for the decomposition of resistant substances
US7842182B2 · kind B2 · utility
2Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 9, 2002 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Dec 27, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates to a method for treating water, especially waste water and drinking water, containing both pathogenic germs and a substance which is difficult to decompose and is from the group comprising persistent substances, endocrine substances, odorous substances, and dyestuffs, by means of ozone supply and UV radiation. The inventive method comprises the following steps: a) ozone is supplied in a concentration of between 0.1 g/m3 and 15 g/m3; and b) UV rays are radiated in a wavelength range of between 200 nm and 300 nm and in a dose of between 50 J/m2 and 2,000 J/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.