Method of treatment of coke wastewater
US9422180B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 24, 2012 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Apr 26, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/66
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for treatment of coke wastewater, including (1) introducing wastewater into a regulating reservoir into which an acid liquor is added until the pH value of the wastewater ranges between about 5.5 and about 6.5; (2) introducing the wastewater into a three-dimensional electrode treatment device for electrolysis treatment; and (3) introducing the wastewater into a coagulation reaction tank into which an alkali liquor is added until the pH value of the wastewater ranges between 8 and 10, and as a coagulant polysilicate ferric magnesium is added into the wastewater for a hybrid reaction of between 5 and 15 mins; allowing the wastewater to flow into a sedimentation basin for plain sedimentation of between 4 and 6 hrs; and extracting a supernatant liquor to yield a processed effluent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.