| 摘要 |
Water is initially oxidized and disinfected with the first agent added in an amount of 10 to 100 ppm, followed by mechanical filtration and the purification process on filtration columns connected in series. The first column is used to carry out a removal of iron and manganese with the residual mechanical impurities. The second column with a porous cation exchange resin is used to carry out a removal of calcium Ca<2 +> and magnesium Mg<2+>, ammonia and heavy metals. The third column with a porous cation exchange resin is used to carry out a removal of heavy metals and the rest of cations. The fourth column with a blend of anion exchange resins is used to carry out a removal of remaining organic contaminants, nitrates, nitrites, phosphates and other anions. The purified water is admixed with a second agent with a remineralizating activity in an amount sufficient to reach potable water hardness of 60 to 100 ppm CaCO3; followed by passing water through an activated carbon bed to remove any remaining organic impurities and reagents from the purification steps; and optionally disinfection of water with a UV source. The invention provides also a device for carrying out the method. |
