Waste water-treating method
US4159244A · kind A · utility
3Cited by
6References
8Claims
0Family size
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Inventors
Key dates
| Filing date | Sep 8, 1977 |
| Grant date | Jun 26, 1979 |
| Priority date | — |
| Expiry date | Sep 8, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/928
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a waste water-treating method which comprises passing an aqueous liquid, in an upward direction and at a suitable flow velocity, through a bed consisting of activated carbon whose particle diameter ranges between 0.20 and 1.5 mm and whose width of particle size range (or substantial difference between the largest ones and the smallest ones) is chosen to be 0.30 mm or more, controlling the fluidized bed of the carbon to be expanded 1.2 to 3.0 times to form a particle size gradient of the activated carbon along the resultant fluidized bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.