Water treatment system based on CEDI

Abstract

The invention discloses a water treatment system based on CEDI. The water treatment system includes a water feeding system, a decontamination system, a cleaning system and pipelines; the water feeding system and the decontamination system are connected through the pipeline; the decontamination system is connected with the cleaning system through the pipeline. The water treatment system is characterized in that the decontamination system is internally provided with two CEDI membrane stacks; the water treatment system adopts a pure water manufacture technology having an ion exchange membrane technology and an ion electromigration technology combined and comprises the water feeding system, the decontamination system and the cleaning system; and the electrodialysis technology and the ion exchange technology are combined, high voltage of electrodes at two ends is utilized to allow charged ions in water to move, and with cooperation of ion exchange resin and a selective resin membrane, ion movement is accelerated to remove, so as to achieve the purpose of water purification.

Description

technical field [0001] The invention relates to a water treatment system, in particular to a CEDI-based water treatment system, and belongs to the technical field of pure water manufacturing and application. Background technique [0002] In the process of water treatment, mixed bed technology is mostly used in the market. However, with the continuous application of mixed bed, the shortcomings of mixed bed are gradually highlighted. During the effective exchange period of the mixed bed, the effluent water quality is stable, and its resistivity can reach 14MΩ. Once the failure end point is reached, the conductivity will rise sharply, and the effluent water quality will also be unstable. Since the exchange cycle is affected by factors such as the operator's operating level, the quality of the regenerant, the quality of the pretreated water, and the quality of the resin itself, there are factors that determine the length of the effective cycle. The regeneration time of the mixe...

AI Technical Summary

Problems solved by technology

The equipment operation of the mixed bed is relatively complicated in the purified water system. It takes at least two shifts and many people to cooperate from the initial acid and alkali mixing to the final regeneration, which is labor intensive. At the same time, due to the mixed bed The shortening of the effective period of exchange brings frequent regeneration of the mixed bed, which further increases the labor intensity of regeneration

[0003] In addition, during the regeneration of the mixed bed, the operator needs to be in contact with acid and alkali, which is a dangerous operation, and although the operator wears labor protection equipment during the regeneration, it still poses a certain risk to the personal safety of the operator.

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