A Parallel Seawater Desalination Device Based on Ion Concentration Polarization Effect

Abstract

The invention provides a parallel seawater desalination device based on ion concentration polarization effect, which includes a main channel and a buffer solution chamber, and the main channel includes a main channel inlet and a main channel outlet. An ion-selective block is arranged in the main channel, and the ion-selective block is made of a cation-selective permeable membrane that only allows cations to pass through. Several parallel micron channels are opened inside the ion-selective block along the axial direction of the main channel. A buffer solution chamber is provided on the outer wall of the main channel, the buffer solution chamber is connected with the ion selective block and allows ions in the ion selective block to enter the buffer solution chamber, and the buffer solution chamber is grounded. Both the entrance of the main passage and the exit of the main passage are connected to a power supply that can adjust the electrode potential, and the potential at the entrance of the main passage is greater than that at the exit of the main passage. The device realizes parallel microchannels by punching holes on the ion selective block, and the number of holes has almost no influence on the desalination efficiency of the system, which is beneficial to industrial application.

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...

AI Technical Summary

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

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