METHOD FOR UNDERGROUND WATER TREATMENT Russian patent published in 2003 - IPC

FIELD: chemical technology. SUBSTANCE: oxidation and neutralization of solutions to be treated to weak acid reaction (pH = 3.5-5.0) is carried out by treatment of the parent water with strong base agent exhibiting oxidative properties simultaneously. Treated water is settled and fed to filtration at the first stage through the natural material exhibiting weak basic properties up to its complete neutralization and at the second stage - through the natural material exhibiting neutral properties. Method provides complex treatment of natural waters from iron and toxic impurities and improvement of quality of high-mineralized natural waters and salt liquor. Invention can be used for treatment of underground waters with high mineralization, saline solutions and salt liquors from iron and normable toxic metals. EFFECT: improved treatment method. 12 cl, 1 dwg, 5 tbl, 3 ex