System and method for performing electrochemically-cycled oxidation on landfill leachate
US12391585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2023 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | May 10, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/023
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system and method for performing electrochemically-cycled oxidation on landfill leachate are provided for the removal of organic materials in landfill leachate which have an ultraviolet absorbance at 254 nm (UVA254), thus pre-treating the landfill leachate for co-treatment through dilution with municipal sewage. Electrochemical oxidation is performed on the landfill leachate in a first reactor chamber to produce hypochlorite (OCl−), followed by delayed application of ultraviolet radiation to produce hydroxyl radicals (OH•) and reactive chlorine species to break bonds in the organic materials. A portion of this partially-treated landfill leachate is then fed to a second reactor chamber for subsequent dichlorination through ultraviolet photolysis. An equivalent volume of fresh landfill leachate is fed into the first reactor chamber to begin the cycle again, allowing for continuous treatment of a source of landfill leachate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.