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Ion exchanger of natural mineral for seawater desalination

A technology of ion exchangers and natural minerals, applied in the field of natural mineral seawater desalination ion exchangers, can solve the problems of poor taste, poor desalination effect, high energy, etc., and achieve the effect of simple operation, no pollution to the environment, and low cost

Inactive Publication Date: 2007-10-10
陶韬
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The desalination effect after one distillation is not good. The desalinated aqueous solution still contains a small amount of salts such as sodium chloride, potassium chloride, sodium sulfate and sodium carbonate, and the taste is poor. Multiple distillations are required and the consumption is relatively high energy of

Method used

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Embodiment Construction

[0033] Below in conjunction with embodiment, the present invention will be further described:

[0034] 1. The batching of the natural mineral seawater desalination ion exchanger consists of the following components by weight percentage: montmorillonite 60%, attapulgite 15%, zeolite 12%, medical stone 8% and sepiolite 5%.

[0035] 2. The preparation method of natural mineral seawater desalination ion exchanger is:

[0036] (1) Crushing and soaking: according to the ingredients of the natural mineral seawater desalination ion exchanger, it is pulverized into a mixture, and the particle fineness is ≤0.5 mm. The pulverized mixture is input into a soaking tank and soaked for 24 hours.

[0037] (2) Squeeze and dry: extrude the soaked mixture into flakes, the thickness of the flakes is controlled at 1.5 mm, and transport them to the cement site for drying. The moisture content of the mixture after drying is ≤15%.

[0038] (3) Grinding: the air-dried mixture is transported to a mill ...

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Abstract

This invention discloses a method for preparing natural mineral ion exchanger for desalting seawater. The natural mineral ion exchanger is composed of smectite, attapulgite, zeolite, maifanite and sepiolite. The method comprises: pulverizing the above minerals, soaking, squeezing, air-drying, grinding and packaging. Na+ and K+ in seawater can perform ion exchange with the natural mineral ion exchanger, thus the contents of NaCl, KCl, Na2SO4 and Na2CO3 in seawater can be effectively reduced. The useful natural mineral ion exchanger can be replaced and dissolved in seawater. Besides, heavy metals such as Hg, Pb and As, chlorides and residual pesticides can be adsorbed by the natural mineral ion exchanger. The natural mineral ion exchanger can be used for purification of seawater as well as brackish water in northwestern regions in China.

Description

Technical field: [0001] The invention relates to seawater desalination, in particular to a natural mineral seawater desalination ion exchanger. Background technique: [0002] Although the amount of water on the earth is large, 97% is sea water, and fresh water only accounts for 3%, and the distribution is uneven. In some places, fresh water resources are extremely scarce, especially for some islands and inland arid areas that lack drinking water. Important issues of human and animal survival. According to the investigation, the brackish underground water in the coast and inland is the second potential water source in my country. Long-term drinking of this water can lead to osteoporosis, black spots on teeth, and even cancer in severe cases. [0003] With the rapid development of modern science and technology, people pay more and more attention to the development and utilization of seawater, fresh water and underground brackish water. After continuous exploration, the metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42C02F103/08
Inventor 陶韬许庆华
Owner 陶韬
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