Electrocoagulation system for removing pollutants from wastewater
US3969245A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 1974 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Oct 21, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2301/024
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Wastewater is treated by a method and an apparatus in which a wastewater flow passes through an electrocoagulation cell having rod-shaped electrodes longitudinally disposed therein. The electrodes are oriented in one or more circles or portions of circles. The wastewater flow remains within the cell for about 1/10 minute to 2 minutes, during which time pollutants within the wastewater are turbulently mixed and combined with bubbles produced at the electrodes, thereby forming an embryo floc. The embryo floc flows out of the cell with the treated wastewater from the top portion of the downstream end of the cell, after which it may be treated with a flocculant to form a full floc. The full floc and thus clarified wastewater flow into a flotation basin where the full floc undergoes a laminar flow to the top of the clarified wastewater and is skimmed off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.