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EDR electrodialysis water purification system and method, and water purifier

A water purification system and electrodialysis technology, applied in the field of electrodialysis, can solve problems such as waste of water resources, low recovery rate of raw water, and poor water quality

Pending Publication Date: 2019-12-03
GUANGDONG LIZI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, raw water is treated by reverse osmosis membrane to pure water and waste water. The ratio of pure water to waste water is relatively low. Only a small part becomes pure water, and a large part becomes waste water to be discharged into the waste water channel. The recovery rate of raw water is low, resulting in water waste
In addition, after the water purification system stops running for a long time, the water quality of the pure water will deteriorate due to the free diffusion of ions in the raw water after standing, and it is difficult to maintain the stability of the effluent water quality

Method used

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  • EDR electrodialysis water purification system and method, and water purifier
  • EDR electrodialysis water purification system and method, and water purifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of EDR electrodialysis water purification system, such as figure 1 As shown, an EDR unit 100 and a current monitoring unit 200 for monitoring the current in the EDR unit 100 are provided;

[0040] Under running conditions, adjust the applied voltage of the EDR unit 100 so that the current in the EDR unit 100 monitored by the current monitoring unit 200 meets the target current range, and then it is judged that the produced water of the EDR unit 100 meets the water quality requirements; , the voltage is started periodically so that the current monitoring unit monitors that the current in the EDR unit 100 meets the target current range.

[0041] It should be noted that when the current meets the target current range, it is determined that the TDS value of the produced water of the EDR unit 100 meets the water quality requirements.

[0042] TDS (Total dissolved solids), called total dissolved solids or total dissolved solids, refers to the total amount of all solut...

Embodiment 2

[0048] A kind of EDR electrodialysis water purification system, other structure is identical with embodiment 1, and difference is: as figure 2 As shown, the EDR electrodialysis water purification system in this embodiment is also provided with a self-priming mechanism 300 , and the self-priming mechanism 300 is disposed at the output pipeline of the EDR unit 100 .

[0049] Specifically, the self-priming mechanism 300 is set as a first self-priming mechanism 310 and a second self-priming mechanism 320, the first self-priming mechanism 310 is set on the pure water pipeline connected with the pure water outlet, and the second self-priming mechanism 320 is set In the waste water pipeline connected with the waste water outlet.

[0050] Specifically, the first self-priming mechanism 310 is a first self-priming pump, and the second self-priming mechanism 320 is a second self-priming pump.

[0051] The water in the EDR unit 100 is sucked by the self-suction mechanism 300, which can ...

Embodiment 3

[0055] A water quality control method of an EDR electrodialysis water purification system. Under operating conditions, the applied voltage of the EDR unit 100 is adjusted so that the current in the EDR unit 100 meets the target current range, and the output water of the EDR unit 100 meets the water quality requirements.

[0056] Specifically, when the current meets the target current range, it is determined that the TDS value of the produced water of the EDR unit 100 meets the water quality requirements.

[0057] In the shutdown condition, the voltage is periodically started, so that the current monitoring unit monitors that the current in the EDR unit 100 meets the target current range

[0058] The water quality control method of the EDR electrodialysis water purification system realizes water desalination through electrodialysis technology, and by measuring the current in the water purification system, the desalination effect of the water quality in the EDR unit 100 can be mo...

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Abstract

The invention discloses a water purifier. A water purification system is provided with an electrodialysis reversal (EDR) unit and a current monitoring unit for monitoring a current in the EDR unit. Under an operation condition, applied voltage of the EDR unit is adjusted, so that the current, monitored by the current monitoring unit, in the EDR unit meets a target current range, and then output water of the EDR unit meets the water quality requirement according to judgment; and under a shutdown working condition, voltage is started regularly, so that the current, monitored by the current monitoring unit, in the EDR unit meets a target current range. According to the EDR electrodialysis water purification system, whether the current in the system meets the target current range is determined; the desalination effect of water in the EDR unit is monitored in real time; stability of outgoing water quality can be kept after the system stands for a long time; and meanwhile, a self-suction mechanism is additionally arranged to suck water in the EDR unit, so that the pressure borne by the EDR unit is kept within the maximum range borne by the EDR unit, and stability of the purification performance of the water purification system is improved.

Description

technical field [0001] The invention relates to the technical field of electrodialysis, in particular to an EDR electrodialysis water purification system, method and water purifier. Background technique [0002] In the reverse osmosis water purification system, the reverse osmosis membrane is used for water purification. The reverse osmosis membrane can intercept various inorganic ions, colloidal substances and macromolecular solutes in the water, and then discharge the water after purification. Among them, the reverse osmosis water purification ability can be applied to a wide range of water quality with salt content. [0003] In the prior art, raw water is treated by reverse osmosis membrane to pure water and waste water. The ratio of pure water to waste water is relatively low. Only a small part becomes pure water, and a large part becomes waste water to be discharged into the waste water channel. The recovery rate of raw water is low, resulting in The waste of water res...

Claims

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Application Information

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IPC IPC(8): C02F1/469
CPCC02F1/4693Y02A20/124
Inventor 陈小平
Owner GUANGDONG LIZI TECH CO LTD
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