Wastewater treatment process
US9994469B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Feb 3, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12R2001/125
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Provided is a wastewater treatment method that keeps Bacillus predominant inside the biological treatment tank and makes it possible to improve the water quality of the treated water while suppressing the volume of sludge generated in association with wastewater treatment. A wastewater treatment method for purifying wastewater by microorganisms in a biological treatment tank wherein the wastewater is purified by causing a first microorganism belonging to the genus Bacillus that is + for nitric acid reduction and − for starch decomposition and a second microorganism that is − for nitric acid reduction and + for starch decomposition in testing of the physiological properties of microorganisms to be predominant inside the biological treatment tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.