Water treatment technology for regenerating filter material by carbon dioxide

Abstract

The invention discloses a water treatment technology for regenerating a filter material by carbon dioxide. The technology comprises the operation steps: pretreating raw materials, filling a treatmentcontainer, treating influent water, regenerating a material and reusing the material. 50% of the TDS content in earth surface water, groundwater or tap water can be reduced, and calcium and magnesiumions in water are removed, the water is softened, chloride ions and sulfate ions are adsorbed, and fluorine and other harmful ions in the water are selectively adsorbed; when the material is regenerated, two kinds of resins are regenerated by carbon dioxide at one time without production of high-concentration salt waste liquor or strong acid and alkali waste liquor. Compared with the prior art, the consumption of chemical drugs is greatly reduced, the cost is reduced, and the high-concentration or dangerous strong acid and alkali waste liquor is not produced and the discharge of wastewater isreduced.

Description

technical field [0001] The invention belongs to the technical field of water treatment ion exchange, in particular, the invention relates to a water treatment technology using carbon dioxide to regenerate resin. Background technique [0002] Ion exchange technology is currently widely used in the field of water purification. Ion exchange, as a technology for effectively treating anions and cations in water, is currently widely used in water purification treatment such as removal of harmful ions exceeding the standard in water, desalination of salt water, softening of hard water, manufacturing of household water dispensers and other fields. Its simple operation, low cost of required equipment and materials, and low operation and maintenance requirements make it play an important role in various fields. However, usually ion exchange water purification or hard water softening technology cannot achieve desalination effect, and high-concentration salt is required for resin regen...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a water treatment method using carbon dioxide to solve the secondary pollution of the exchange resin regeneration solution caused by the existing ion exchange technology, and the large consumption of high-concentration salt and strong acid and alkali. A greenhouse gas, the anion and cation exchange materials used are regenerated at the same time, and the selected SC-HAIX-NanoZr anion exchange resin removes common anions while achieving selective adsorption of fluoride ions, and combines SC-WAC cation exchange resins at the same time Achieve water softening and reduce the TDS content of incoming water by more than 50%

Images