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Parallel seawater desalination device based on ion concentration polarization effect

A concentration polarization and effect technology, applied in the field of parallel seawater desalination devices, can solve the problems of high difficulty, low extraction efficiency and high process requirements, and achieve the effects of high reliability, high efficiency and great feasibility

Active Publication Date: 2019-03-29
INST OF LASER & OPTOELECTRONICS INTELLIGENT MFG WENZHOU UNIV
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Problems solved by technology

[0007] It can be seen that the current seawater desalination research based on the ion concentration polarization effect is limited to nanoscale channels. Such channels have high requirements for technology, are difficult to maintain, and are not conducive to large-scale industrial applications. In addition, , the existing technology still has problems such as expensive detection equipment, low extraction efficiency, high cost, and difficulty in parallelization

Method used

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  • Parallel seawater desalination device based on ion concentration polarization effect
  • Parallel seawater desalination device based on ion concentration polarization effect
  • Parallel seawater desalination device based on ion concentration polarization effect

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Embodiment 1

[0029] Example 1:

[0030] Such as figure 1 , figure 2 The shown seawater desalination device includes a main channel 3 and a buffer solution chamber 4 . The main channel 3 is a pipe-shaped cylindrical channel, and has a main channel inlet 1 and a main channel outlet 7 . The raw seawater solution to be desalinated is passed into the main channel 3 from the main channel inlet 1, and after desalination treatment, the fresh water solution flows out from the channel outlet 7 and leaves the desalination device.

[0031] An ion-selective block 5 is arranged in the middle of the main channel 3 , and the ion-selective block 5 is a cylindrical shape conforming to the shape of the inner wall of the main channel 3 . Inside the ion-selective block 5, there are several parallel micro-channels 6 along the axial direction of the main channel 3. The opening direction of the micro-channels 6 is the same as that of the water flow. Preferably, it is 1 to 100 μm. The micron channels 6 are a...

Embodiment 2

[0038]A parallel seawater desalination device as described in Embodiment 1, the difference lies in that the cross-sectional shape of the buffer solution chamber 4 outside the main channel 3 is no longer required to be a ring structure. The buffer solution chamber 4 is provided with a buffer solution inlet 2 and a buffer solution chamber outlet 8, and the cation solution is led out of the buffer solution chamber 4 through the flowing buffer solution, thereby ensuring stable operation of the system.

[0039] At this time, the first electrode V is inserted at the main channel entrance 1 of the main channel 3 1 , whose potential is Φ 1 , the second electrode V is inserted at the main channel outlet 7 of the main channel 3 2 , whose potential is Φ 2 , where Φ is required 2 1 , the potential difference between the two ends of the main channel 3 is used to generate the first field intensity E covering the direction of the main channel 3 1 .

[0040] After the buffer solution cha...

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Abstract

The invention provides a parallel seawater desalination device based on ion concentration polarization effect. The parallel seawater desalination device comprises a main channel and a buffer solutionchamber, and the main channel includes a main channel inlet and a main channel outlet. An ion-selective block is disposed in the main channel, and the ion-selective block is prepared by a cation-selective permeable membrane that is only for passing cation through, and the ion-selective block has a plurality of parallel micro-channels inside the main channel along an axis direction. the buffer solution chamber is disposed on the outer wall of the main channel, and the buffer solution chamber is connected to the ion-selective block to allow the ions in the ion-selective block to enter the buffersolution chamber, and the buffer solution chamber is grounded. A power source that is connected to adjustable electrode potentials is provided at the main channel inlet and the main channel outlet, and the potential at the main channel inlet is greater than the potential at the main channel outlet. The device realizes parallelism to the microchannel by punching holes on the ion-selective block, and the number of holes has little influence on the desalination efficiency of the system, which is advantageous for industrial applications.

Description

technical field [0001] The invention relates to the field of seawater desalination equipment, in particular to a parallel seawater desalination device based on ion concentration polarization effect. Background technique [0002] Worldwide population growth and higher living standards have increased the consumption of human fresh water, and reservoirs, rivers and underground fresh water resources have become increasingly scarce. According to statistics, about 3.6 billion people in the world lack available fresh water resources for at least one month a year, and the trend of fresh water shortage is intensifying. [0003] Seawater resources account for about 97% of the world's total water resources, and obtaining freshwater through seawater desalination is one of the important ways to solve the problem of freshwater shortage. At present, the traditional seawater desalination methods at home and abroad mainly include reverse osmosis, distillation and electrodialysis. These met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/469C02F103/08
CPCC02F1/4693C02F2103/08
Inventor 李子瑞唐静
Owner INST OF LASER & OPTOELECTRONICS INTELLIGENT MFG WENZHOU UNIV
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