FIELD: chemistry.
SUBSTANCE: invention relates to water treatment and can be used in production of drinking water. Method involves sequential treatment of water with an oxidant which enables to convert arsenic compounds (III) to arsenic compounds (V), a precipitant and a sorbent. Precipitant used is soluble salts of divalent iron, or manganese, or copper, or cobalt, or nickel, or zinc, or mixtures thereof. After treatment with precipitator alkaline agent is introduced to create medium with pH value 9–9.2, and sorbent is magnesium oxide with periclase structure or iron oxyhydroxide.
EFFECT: technical result consists in achieving water purification by arsenic compounds to values of 10 mcg/l and less, as well as in reducing content of heavy metals in purified water.
6 cl, 1 dwg, 2 tbl, 12 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR REMOVING ARSENIC COMPOUNDS FROM DRINKING WATER | 2015 |
|
RU2598935C1 |
| METHOD OF PROCESSING OF SODIUM HYDROLYSINE ARSENITE | 2016 |
|
RU2622136C1 |
| METHOD FOR CLEANING OF GROUND WATERS FROM ARSENIC | 2010 |
|
RU2441846C1 |
| METHOD OF EXTRACTING IODINE FROM MINERAL SOURCES | 2012 |
|
RU2481266C1 |
| METHOD OF PROCESSING PRODUCTS OF ALKALINE HYDROLYSIS OF LEWISITE TO COMMERCIAL PRODUCT | 2008 |
|
RU2389526C1 |
| METHOD FOR REPROCESSING OF REACTION MASSES RESULTING IN LEWISITE DETOXICATION PROCESS | 2008 |
|
RU2359725C1 |
| METHOD FOR DECONTAMINATION OF AQUEOUS SOLUTIONS CONTAINING COMPOUNDS OF HEXAVALENT CHROME | 2017 |
|
RU2678287C1 |
| METHOD FOR REPROCESSING LEWISITE DETOXICATION PRODUCTS | 2001 |
|
RU2198707C1 |
| METHOD OF OBTAINING ELEMENTARY ARSENIC AND SODIUM CHLORIDE FROM PRODUCTS OF ALKALINE HYDROLYSIS OF LEWISITE | 2009 |
|
RU2412734C2 |
| SORBENT FOR HEAVY METALS, METHOD OF ITS PRODUCTION AND METHOD OF WATER PURIFICATION | 2006 |
|
RU2336946C2 |
