Desalinization and purification method for sea water or sewage

A sewage and seawater technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as energy consumption, scale in large pots, difficulty in mass production of fresh water, etc.

Inactive Publication Date: 2008-01-16
贠莉娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method consumes a lot of energy, produces a lot of scale, and is difficult to produce fresh water in large quantities

Method used

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  • Desalinization and purification method for sea water or sewage
  • Desalinization and purification method for sea water or sewage

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Embodiment Construction

[0009] First remove solid impurities from ②sea water or sewage, and then introduce the seawater or sewage from which solid impurities have been removed and ①methane gas into the same ③closed container. The application conditions are 0°C to 10°C, and the pressure is more than 30 atmospheres. Stir ④methane gas and ⑤seawater or sewage to make them fully contact to form ⑥methane hydrate solid, control the ratio of methane and seawater or sewage to prevent the salt dissolved in seawater or sewage from crystallizing into solid crystalline salt due to the reduction of free water , to avoid the difficult separation of the crystalline salt and methane hydrate solid mixture. Separation of the formed ⑥methane crystal hydrate solid and ⑤seawater or sewage liquid mixture to remove the solid ⑦methane hydrate part, and may enter ⑧other gases during extraction. Make ⑦methane hydrate release ⑩methane gas to obtain purified ⑨sea water or sewage and ⑩methane gas. Collect the discharged ⑩methane...

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Abstract

The method discloses a seawater or sewage desalting and purifying method, which aims at providing a simple, low-energy-consuming and easily-applied seawater or sewage desalting method. Methane is dissolved in the water to form methane crystalline hydrate and become solid; then the crystalline hydrate is extracted, and the methane gas inside the crystalline hydrate is released to get the desalted and purified water and methane gas. The methane gas can be re-used.

Description

technical field [0001] The invention relates to a method for desalting and purifying salt water. Background technique [0002] At present, seawater purification mainly includes distillation, electro-osmosis, and reverse osmosis. Electrodialysis desalination is achieved using membranes. Under the action of electricity, the positive ions in the salts in seawater run to the cathode direction through the positive membrane, and cannot pass through the negative membrane and stay; the negative ions run through the negative membrane to the anode direction, and cannot pass through the positive membrane and stay. Like this, the seawater in the pipeline that the salt ion is exchanged has just become fresh water. The reverse osmosis method uses a "semi-permeable membrane". The performance of the semi-permeable membrane is to only allow fresh water to pass through, not to allow salt to pass through. Distillation is the process of boiling seawater, evaporating fresh water into steam, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F103/08
Inventor 张赛夫贠莉娜
Owner 贠莉娜
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