Industrial waste water treatment process
US5207926A · kind A · utility
Inventor
Key dates
| Filing date | May 14, 1992 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | May 14, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An industrial waste water treatment process including a step of guiding a waste water from chemical solution treatment troughs by a gutter into a waste water reservoir through a wire gauge filter; a step of adding a chemical solution, which contains NaOH and H.sub.2 O at the ratio of 25:75 by volume, into the waste water reservoir to destroy the acidic substances in the collected waste water; a step of pumping the collected waste water from the waste water reservoir to a water filtration tower for filtration through a series of water filtration tanks, permitting the filtrated water to be guided into a depositing reservoir; and a step of pumping the water from the depositing reservoir to a water tower for re-use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.