Seawater desalination system and seawater desalination method

A technology for concentrating seawater and freshwater, which is applied in the seawater desalination system and the field of seawater desalination to achieve the effects of high purity of freshwater, long service life and low production cost

Active Publication Date: 2015-07-15
THIRD INST OF OCEANOGRAPHY STATE OCEANIC ADMINISTATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a seawater desalination system and seawater desalination method with many advantages such as low production cost, high solar energy utilization rate, low energy consumption, easy to carry, long life, etc.

Method used

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  • Seawater desalination system and seawater desalination method
  • Seawater desalination system and seawater desalination method
  • Seawater desalination system and seawater desalination method

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Effect test

Embodiment 1

[0058] Step 1: Under the pressure of the syringe pump 9, through the liquid inlet pipe 8, the pretreated natural seawater flows in from the inlet channel in the microfluidic chip 7 at a flow rate of 20ul / min, and at the same time, microfluidic water is injected into the buffer solution. Channel 77 is injected with buffer solution (borate). The size of microfluidic chip 7 is 20mm×20mm. The water inlet microchannel 73 of the chip, the concentrated seawater outlet microchannel 74 and the fresh water outlet microchannel 76 are Y-shaped. The width of the water microchannel 73 is 500um, the width of the concentrated seawater outlet microchannel 74 and the freshwater outlet microchannel 76 is 250um, and the concentrated seawater outlet microchannel 74 and the freshwater outlet microchannel 76 form 30°, the buffer solution microchannel 77 of the chip In an inverted V shape, the width of the buffer solution microchannel 77 is 500um, and the thickness of each microchannel is 100um, while...

Embodiment 2

[0064] Step 1: Under the pressure of the syringe pump 9, through the liquid inlet pipe 8, the pretreated natural seawater flows in from the inlet channel in the microfluidic chip 7 at a flow rate of 20ul / min, and at the same time, microfluidic water is injected into the buffer solution. Channel 77 is injected with buffer solution (borate). The size of microfluidic chip 7 is 20mm×20mm. The water inlet microchannel 73 of the chip, the concentrated seawater outlet microchannel 74 and the fresh water outlet microchannel 76 are Y-shaped. The width of the water microchannel 73 is 500um, the width of the concentrated seawater outlet microchannel 74 and the freshwater outlet microchannel 76 is 250um, and the concentrated seawater outlet microchannel 74 and the freshwater outlet microchannel 76 form a 50°, the buffer solution microchannel 77 of the chip In an inverted U shape, the width of the buffer solution microchannel 77 is 500um, and the thickness of each microchannel is 100um, whi...

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Abstract

The invention discloses a seawater desalination system and a seawater desalination method. The system includes a DC current source, a metal lead, electrodes, a plurality of microfluidic chips composed of a glass sheet and a PDMS chip, a liquid inlet pipe, an injection pump, and a fresh water outlet pipe, a concentrated seawater outlet pipe and two liquid conveying pipes that are connected to the microfluidic chips. The DC current source is in connection with the electrodes at all microchannel ports of the microfluidic chips through the metal lead. The fresh water outlet pipe and the concentrated seawater outlet pipe are respectively connected to a respective collecting groove. According to the method and the system provided by the invention, the ion concentration polarization phenomena occurs to impurity particles in seawater under the action of an electric field, and then under an outside pressure on seawater, the impurity particles and fresh water are separated. The system has the characteristics of low manufacturing cost and small volume, and can realize portability and other effects.

Description

technical field [0001] The invention relates to seawater desalination, in particular to a seawater desalination system and a seawater desalination method. Background technique [0002] As we all know, 71% of the earth's surface is covered by water, and the fresh water resources that can be used for people's lives only account for 2.5% of the total water resources, and the corresponding seawater content accounts for 97.5%. With the rapid development of the world, the demand for water resources, especially fresh water resources, is increasing. Therefore, the scarcity of fresh water resources has become a very serious global problem facing the world today. [0003] In recent years, as more and more countries pay attention to the scarcity of water resources, it is considered to be the best way to obtain fresh water resources through seawater desalination, and there are many methods of seawater desalination, mainly There are reverse osmosis, electrodialysis, distillation, solar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48C02F103/08
Inventor 黄海宁葛立凯暨卫东林辉李鑫贺青霍云龙孙秀武王伟力
Owner THIRD INST OF OCEANOGRAPHY STATE OCEANIC ADMINISTATION
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