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Device for separating electro-adsorption water-based solution ions

An ion separation and electrosorption technology, applied in the directions of dispersed particle separation and separation methods, can solve the problems of unsuitable seawater or brackish water desalination, large power consumption, etc., and achieve obvious energy saving effect, safe operation, and cost reduction. Effect

Inactive Publication Date: 2013-01-23
苏润西
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this process is accompanied by the passage of continuous bipolar current, and the fluid between fresh water, concentrated water and polar water may conduct electricity at the same time, it is mainly used for deep desalination of water, and the gap between the two membranes includes the ion exchange resin layer. Very small, because the anion and cation are separated by the electrolysis of bipolar ions, if the ion concentration is high, the power consumption will be extremely large, and the existing structure is not suitable for desalination of seawater or brackish water.

Method used

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  • Device for separating electro-adsorption water-based solution ions
  • Device for separating electro-adsorption water-based solution ions
  • Device for separating electro-adsorption water-based solution ions

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Experimental program
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Effect test

Embodiment 2

[0028] Embodiment 2: see attached figure 2 . In the electro-adsorption water-based solution ion separation device, there is also a partition 10.0 in the middle of the channel of the composite adsorption unit. The anion exchange membrane is on the side of the positive plate, and the cation exchange membrane is on the side of the negative plate. The divider divides the channel into two sub-channels 11.11 and 11.21. Other structures are the same as in Embodiment 1.

Embodiment 3

[0029] Embodiment 3: see attached image 3 . An ion separation device for electro-adsorption water-based solution, a partition 10 is provided in the middle of the channel of the composite adsorption unit, and the partition is composed of anion and cation two-layer ion exchange membrane 10.2, 10.3 Composition, the anion exchange membrane is on the side of the positive plate, and the cation exchange membrane is on the side of the negative plate, separating the channel into two sub-channels 11.1, 11.2. Other structures are the same as in Embodiment 1.

[0030] The above embodiments are tested and the effect is very good: the separation and recovery rate of the high-concentration water-based solution reaches about 80%, and the separation and recovery rate of the low-concentration water-based solution reaches about 90%.

Embodiment 1

[0031] The seawater of Bohai Bay is taken in embodiment 1, and temperature is 20 ℃, and its salinity is 35000mg / L, produces 1000kg the fresh water that salinity is 500mg / L, and power consumption is only 3kW.h; Electricity 50-200%. At the same time, 330L of high-concentration brine with a salt content of 140,000mg / L can be obtained, which can be used as raw water for salt production, and the overall benefit is greatly improved.

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Abstract

The invention discloses a device for separating electro-adsorption water-based solution ions. The device is provided with a direct current power supply and one or more compound adsorption units, wherein each compound adsorption unit is provided with an electrode plate which is respectively connected with the direct current power supply to form a positive electrode plate and a negative electrode plate; an anion exchange resin layer and a cation exchange resin layer are respectively arranged on the inner side of the positive electrode plate and the inner side of the negative electrode plate; ananion exchange membrane and a cation exchange membrane are respectively arranged on the inner side of the anion exchange resin layer and the inner side of the cation exchange resin layer; a channel for accommodating a treated water-based solution is arranged between the anion exchange membrane and the cation exchange membrane; two ends of the channel are respectively communicated with an inlet pipe and an outlet pipe; the outlet pipe is respectively communicated with a concentrated liquid outlet pipe and a weak liquid outlet pipe through two electrical control valves; and the inlet pipe is communicated with an inlet pipe of a water-based solution to be treated through the electrical control valves. The device can be further provided with a PLC (Programmable Logic Controller) for automatically controlling. The device disclosed by the invention is suitable for desalting sea water and brackish water and separating ions in the water-based solutions as well as has the advantages of complete structure, flexibility in control, high efficiency, energy saving and environment friendliness.

Description

technical field [0001] The invention belongs to the technical field of ion separation in water-based solutions, and in particular relates to a device and an operation method for ion separation by means of electric adsorption and ion exchange. Background technique [0002] At present, the ion separation and concentration of water-based electrolyte solutions mainly include reverse osmosis, distillation, and electrodialysis. When the ion concentration of the solution is high, the osmotic pressure of the system is high, and a greater operating pressure is required when the reverse osmosis method is used for treatment. Even if the energy recovery device is used, the power consumption is also large; Distillation requires steam as the power source, and is mainly used in the condition of power generation lack of steam or waste heat to provide raw steam. At the same time, in order to obtain a higher recovery rate and concentration ratio, there must be more flash stages and effects. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/469
Inventor 苏润西
Owner 苏润西
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