METHOD OF PURIFICATION OF PORTABLE WATER FROM SALTS OF HARDNESS (CA, MG) WITH SIMULTANEOUS PRODUCTION OF A CARBON-TO-MINERAL MATERIAL OF AGROINDUSTRIAL APPLICATION Russian patent published in 2005 - IPC

FIELD: purification of natural waters.

SUBSTANCE: the invention is dealt with the methods of purification of natural waters intended for drinking with simultaneous production of carbon-to-mineral material, which may be used for soil development. the Method of purification of potable water from salts of hardness (Ca, Mg) with simultaneous production of carbon-to-mineral material of agroindustrial application provides for treatment of the water with a lime mortar [Ca(OH)2] and delivery of the produced reaction mixture in the form of a set jets all over the height and the circumference of the suspended layer of a ball-type granulated carbon - carbon material with specific surface of mesopores in terms of nitrogen of 0.5-100 m² / g, bulk volume of pores 0.08-0.8 cm³ / g and value of pH - 9-11. The process is conducted up to 10-120 % saturation of sorbent by reaction particles and then sorbent is removed without regeneration. Extracted carbon-to-mineral material is treated with a solution of sulfuric either phosphoric acids or their mixture in an equivalent ratio. The method allows to reduce hardness of water and to attach useful properties to the spent sorbent.

EFFECT: the invention ensures reduction of hardness of water and attachment of useful properties to the spent sorbent.

4 cl, 1 dwg