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Electric control ion exchange coupling water electrolysis device and technology

A technology of ion exchange and anion exchange membrane, which is applied in the field of electrically controlled ion exchange coupling electrolysis water device, can solve the problems that have not been reported in theory and technology, and achieve the effect of high selectivity, simple operation and reversible process

Active Publication Date: 2018-08-28
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although electronically controlled ion exchange technology and electrolyzed water technology have been studied, the theory and technology of electrically controlled ion exchange coupled with electrolyzed water process to simultaneously treat metal ions, precipitate hydrogen, and generate acid have not been reported yet.

Method used

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  • Electric control ion exchange coupling water electrolysis device and technology
  • Electric control ion exchange coupling water electrolysis device and technology
  • Electric control ion exchange coupling water electrolysis device and technology

Examples

Experimental program
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Embodiment 1

[0041] Treatment of lithium ions in recycled wastewater:

[0042] The process of lithium ion adsorption and oxygen evolution is as follows: figure 1 As shown, different functional electrodes are installed: electrocatalytic functional electrode A, electronically controlled ion exchange functional electrode B, anion exchange membrane C, the first liquid inlet 4, dilute sulfuric acid solution is injected into the left chamber, and the first liquid inlet 5 is opened , the right chamber is injected with lithium sulfate waste liquid to be treated. Then open the gas outlet 3 and connect the gas collection bag. A voltage is applied to adsorb lithium ions and discharge oxygen. After the adsorption is saturated, the first liquid outlet 6 is opened to collect the sulfuric acid solution with increased concentration (the discharge liquid can be reinjected into the adsorption system through the first liquid inlet 4 for recycling). Open the second liquid outlet 7 to discharge the lithium ...

Embodiment 2

[0049] Treatment of copper ions in recycled wastewater:

[0050] The process of copper ion adsorption and oxygen evolution is as follows: image 3 As shown, install different functional electrodes: electrocatalytic functional electrode A, electronically controlled ion exchange functional electrode B, anion exchange membrane C, open the first liquid inlet 4, inject dilute sulfuric acid solution into the left chamber, and open the first liquid inlet 5. The right chamber is filled with copper sulfate waste liquid to be treated. Then open the gas outlet 3 and connect the gas collection bag. Apply voltage to adsorb copper ions and discharge oxygen. After the adsorption is saturated, the first liquid outlet 6 is opened to collect the sulfuric acid solution with increased concentration (the discharge liquid can be reinjected into the adsorption system through the first liquid inlet 4 for recycling). Open the second liquid outlet 7 to discharge the copper sulfate solution with redu...

Embodiment 3

[0057] Extraction and enrichment of lithium ions from salt lake brine:

[0058] The process of lithium ion adsorption and chlorine gas precipitation is as follows: Figure 5 As shown, install different functional electrodes: electrocatalytic functional electrode A, electronically controlled ion exchange functional electrode B, anion exchange membrane C, open the first liquid inlet 4, inject dilute hydrochloric acid solution into the left chamber, and open the first liquid inlet 5. The right chamber is filled with saline lake solution rich in lithium chloride. Then open the gas outlet 3 and connect the gas collection bag. A voltage is applied to adsorb lithium ions and discharge chlorine gas. After the adsorption is saturated, the first liquid outlet 6 is opened to collect the acid solution with increased concentration (the discharge liquid can be reinjected into the adsorption system through the first liquid inlet 4 for recycling). Open the second liquid outlet 7 to dischar...

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Abstract

The invention discloses an electric control ion exchange coupling water electrolysis device and technology and belongs to the field of wastewater treatment and new energy sources, aiming at solving two hotspot problems of metal ion treatment and electrolytic hydrogen production in a water body so as to realize efficient utilization of energy sources. The electric control ion exchange coupling water electrolysis device adopts a one-cavity and two-room structure, wherein one room is used for realizing reversible adsorption and desorption on target metal ions through applying oxidization or reduction voltage to an electric control ion exchange functional electrode; the other room realizes efficient utilization of a high-additional-value product including hydrogen gas, oxygen gas or chlorine gas. The technology has the advantages of low energy loss, high ion selectivity, reversible process, environment friendliness and simplicity in operation and is a novel and efficient water treatment technology.

Description

technical field [0001] The invention relates to an electronically controlled ion exchange coupled electrolyzed water device and process, in particular to a method for synchronously producing hydrogen, generating acid, and energy-saving and efficient treatment of metal ions in wastewater, belonging to the fields of wastewater treatment and new energy. Background technique [0002] In recent years, the treatment of metal ions in water has received extensive attention. Such as removal of toxic heavy metal ions, recovery of high-value metal lithium ions, etc. The reasons mainly include the following aspects: 1) Heavy metals caused by many factors such as mining, sewage irrigation and the use of heavy metals exceeding the standard make the environmental quality worse and directly endanger human health; 2) In many industrial production processes, trace amounts of metals Ion impurities seriously affect product quality and production efficiency; 3) The increasing development of ele...

Claims

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Application Information

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IPC IPC(8): C25B1/10C25B1/14C25B9/00C02F1/42C02F1/46
CPCC02F1/42C02F1/46C02F2001/422C25B1/04C25B1/14C25B9/00C25B9/73Y02E60/36
Inventor 郝晓刚郝晓琼张迪杜晓蒋仲庆高凤凤杨言言
Owner TAIYUAN UNIV OF TECH
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