Double-tower type two-stage desalting device

Abstract

The invention relates to water desalination treatment equipment, in particular to a double-tower type secondary desalination device. It overcomes the defects of complex operation and high consumption of chemicals required by the existing desalination treatment equipment. The present invention comprises two ion exchangers, wherein the two ion exchangers are respectively divided into two, the upper part is set as a tank body equipped with cation exchange resin, that is, the cation exchange unit, and the lower part is set as a tank body equipped with anion exchange resin , that is, the anion exchange unit, the cation exchange unit and the anion exchange unit are superimposed to form two ion exchange towers, the first cation exchange unit and the second anion exchange unit form an ion exchange tower, the second cation exchange unit and the first anion exchange unit Constitute the second ion exchange tower. Its operation is simple, safe and reliable, with less chemical consumption, low construction cost, good regeneration effect, less regeneration waste liquid and less salt discharge, which greatly reduces the pollution to the environment.

Description

technical field [0001] The invention relates to water desalination treatment equipment, in particular to a double-tower type secondary desalination device. Background technique [0002] There are many methods of water desalination treatment, and ion exchange desalination method is a commonly used method in my country. However, during the treatment process, a large amount of acid and alkali are consumed to regenerate the ion exchange resin, and the regeneration waste liquid generated after regeneration is wastewater with high salt content, which is difficult to treat and eventually causes pollution to the natural water system. [0003] In recent years, with the development of water treatment technology and the improvement of environmental protection requirements, the use of reverse osmosis (RO) desalination has begun to be widely used. However, the desalination rate of the reverse osmosis method is generally 96% to 99%, which cannot meet the needs of some industrial sectors,...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of complex operation and high consumption of chemicals required by the existing desalination treatment equipment, and propose a double-tower secondary desalination device, which is simple to operate, safe and reliable, with low chemical consumption and low construction cost. Low fee

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