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Electrochemical aeration dechlorination device and method

An aeration device and electrochemical technology, applied in chemical instruments and methods, electrochemical water/sewage treatment, degassed water/sewage treatment, etc., can solve problems such as increasing the difficulty of chlorine removal, and achieve large-scale industrial application prospects, Reduce the content of chloride ions and solve the effect of equipment corrosion

Pending Publication Date: 2019-11-26
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The new method is based on the following principle: in the conventional electrochemical dechlorination process, when the chlorine gas is generated by the action of the electrode surface, because the chlorine gas is very easy to react with water and then re-converted into chloride ions (Cl 2 +H 2 O=HCl+HClO), so it greatly increases the difficulty of chlorine removal

Method used

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  • Electrochemical aeration dechlorination device and method
  • Electrochemical aeration dechlorination device and method
  • Electrochemical aeration dechlorination device and method

Examples

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Embodiment 1

[0040] see figure 1 As mentioned above, the present invention provides an electrochemical aeration dechlorination device, which includes a container 1 , an electrode 2 , an aeration device 3 and a DC power supply 4 . The container 1 is an independent steel container, and the electrode 2 is a ruthenium-iridium electrode; the electrode 2 includes a cathode and an anode, and the cathode and the anode are respectively connected to the negative pole and the positive pole of the DC power supply 4; the aeration device 3 is also connected to the DC power supply 4, and the DC power supply 4 power supply. The cathode and the anode are arranged at intervals; both the electrode 2 and the aeration device 3 are placed in an independent steel container 1 and are in contact with the liquid in the container 1 . The gas fed into the aeration device 3 is air, and the distance from the liquid surface is 0.5 meters.

[0041] When the electrochemical aeration dechlorination device of this embodim...

Embodiment 2

[0043] see figure 2 As mentioned above, the present invention provides an electrochemical aeration dechlorination device, which includes a container 1 , an electrode 2 , an aeration device 3 and a power source 4 . Vessel 1 consists of two independent steel vessels that can be further connected by a "salt bridge". This design can accommodate different types of solutions in the containers of the cathode and anode according to the actual redox reaction needs, and carry out targeted aeration. "Salt bridge" can reduce the liquid junction potential, transfer ions and connect high-concentration electrolyte solutions between the two solutions. The electrode 2 is a graphite electrode, and the power supply 4 is an AC power supply; both the electrode 2 and the aeration device 3 are connected to the AC power supply 4 and powered by the AC power supply 4 . The two graphite electrodes 2 are respectively placed in two independent iron containers 1, and the aeration device 3 is placed in o...

Embodiment 3

[0046] see image 3 As mentioned above, the present invention provides an electrochemical aeration dechlorination device, which includes a container 1 , an electrode 2 , an aeration device 3 and a power source 4 . The container 1 includes two interconnected plexiglass containers, the electrode 2 is a tin dioxide electrode, and the power supply 4 is a pulse power supply; both the electrode 2 and the aeration device 3 are connected to the pulse power supply 4, and are powered by the pulse power supply 4.

[0047] Two tin dioxide electrodes 2 are respectively placed in two connected plexiglass containers 1, and the aeration device 3 is placed in one of the plexiglass containers, and the tin dioxide electrodes 2 and the aeration device 3 are all in phase with the liquid in the container. touch. This design method can further regulate the migration rate of solutes in the solution through the introduction of communication channels. The gas fed into the aeration device 3 is oxygen,...

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Abstract

The invention discloses an electrochemical aeration dechlorination device which comprises a container, electrodes, an aeration device and a power supply, wherein the container is used for containing awater body to be treated; two electrodes are arranged at an interval and in contact with the water body to be treated in the container; the aeration device is arranged in the water body to be treatedin the container; and the power supply is connected with the electrodes and the aeration device and is used for providing power to the electrodes and the aeration device. Due to introduction and combined utilization of an aeration technique in an electrochemical dechlorination system, the chloride ion removal rate is up to 55-80%, the content of chloride ions in a water body can be effectively reduced, then multiple problems such as equipment corrosion can be solved, and great industrial application prospects can be met.

Description

technical field [0001] The invention belongs to the technical field of water treatment equipment, in particular to an electrochemical aeration dechlorination device for water treatment. Background technique [0002] Water is an important material indispensable to the survival of human beings and all life, and it is also an extremely precious natural resource in economic development. However, under the background of the rapid development of economy and science and technology, while human beings have achieved gratifying achievements, they have also caused a great burden on the current environment, especially the increasingly prominent problem of water pollution, which poses a great threat to human health and the ecological environment. . Chloride ions are considered to be a harmful component of water most of the time, because on the one hand, chloride ions are very easy to cause equipment corrosion, and on the other hand, their existence will also affect the use and effect of...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/46C02F1/20C02F101/12
CPCC02F1/46104C02F1/46C02F1/46109C02F1/20C02F2001/46133C02F2201/46105C02F2101/12
Inventor 延卫冯江涛孙世翼王嘉楠
Owner XI AN JIAOTONG UNIV
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