Water purification apparatus
US7857951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2004 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | May 2, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2201/4617
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention intends to provide a water purification apparatus that is small and easy-to-use, yet being capable of efficiently creating flocs of impurities and removing the impurities from the wastewater in a single pass. To achieve this objective, an inner tubular anode 12 made of stainless steel or carbon is inserted into an outer tubular cathode 11 made of aluminum, leaving a predetermined intermediate space 13 between them, and electrolysis is carried out to produce aluminum hydroxide. The aluminum hydroxide thus produced serves as the medium for flocculating the impurities in the wastewater ascending the intermediate space 13. The wastewater containing the flocs of impurities is filtrated with a filter 18 within a filtering and settling tank 17. As a result, the impurities are completely removed from the wastewater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.