Method for controlling chlorinated nitrogen-containing disinfection by-product in water
US10723644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Oct 12, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Disclosed is a method for controlling a chlorinated nitrogen-containing disinfection by-product in water, including the following steps: firstly, the pH value of a water sample is controlled, ultraviolet irradiation treatment is used and a persulfate or hydrogen persulfate is added at the same time, then chlorination disinfection is carried out, and finally, aeration treatment is carried out, so that a water sample from which the chlorinated nitrogen-containing disinfection by-product in water is removed and obtained. The method can effectively control the formation of chlorinated N-DBPs, and can effectively reduce the amount of trichloromethane in the subsequent chlorination disinfection process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.