Method for removing nitrogen and phosphorus from sewage and wastewater through improvement of reaction tank shape and return method in existing biological nitrogen and phosphorus removal process and combination with anaerobic ammonium oxidation process (anammox)
US12116299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2021 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Feb 26, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2301/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Disclosed is a method for removing nitrogen and phosphorus from sewage and wastewater through the improvement of a process configuration and a method for determining internal flows in an existing biological nitrogen and phosphorus removal process in combination with a deammonification process. According to an embodiment of the present invention, provided is a nitrogen and phosphorus removal apparatus in which, to form conditions in an anaerobic ammonium oxidation tank to perform a deammonification reaction, the influent flow rate into the nitrogen and phosphorus removal apparatus, the flow rate of water returned between reaction tanks, and the amount of returned sludge are controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.