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Efficient and environment-friendly seawater desalination treatment technology

A treatment process and environmental protection technology, applied in the field of water treatment, can solve problems such as immature technology, and achieve the effects of easy regeneration, improved efficiency and reduced cost

Inactive Publication Date: 2016-12-07
叶剑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's seawater desalination technology is still in the development period, and there is still little attention to the forward osmosis technology in the field of seawater desalination, and the technology is not very mature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An efficient and environmentally friendly seawater desalination treatment process, comprising the following steps:

[0025] (1) Preparation of sodium citrate modified magnetic nanoparticles draw solution

[0026] a) Dissolve ferric chloride and ferrous chloride in 100ml of distilled water at a ratio of 1:2, and then drop them into the sodium hydroxide solution, under the protection of inert gas, under the state of 2000 rpm Stir for 30min, then heat to 70°C, continue to stir for 2h, naturally cool to room temperature, then centrifuge at 5000rpm for 10min, wash the obtained precipitate to neutrality, dry at -16~-18°C for 12h in vacuum to obtain tetraoxide Triferromagnetic nanoparticles;

[0027] b) Add sodium citrate solution to the ferroferric oxide magnetic nanoparticles prepared in step a), heat to 80°C, stir at 8000rpm for 1h, then centrifuge at 5000rpm for 10min, and centrifuge again after washing the obtained precipitate, so Repeat 2-5 times, and finally dry the c...

Embodiment 2

[0034] An efficient and environmentally friendly seawater desalination treatment process, comprising the following steps:

[0035] (1) Preparation of sodium citrate modified magnetic nanoparticles draw solution

[0036] a) Dissolve ferric chloride and ferrous chloride in 100ml of distilled water at a ratio of 1:4, and then add it dropwise to the sodium hydroxide solution, under the protection of inert gas, under the state of 3000 rpm Stir for 60min, then heat to 90°C, continue to stir for 6h, naturally cool to room temperature, then centrifuge at 7000rpm for 20min, wash the obtained precipitate to neutrality, dry at -16~-18°C for 18h in vacuum to obtain tetraoxide Triferromagnetic nanoparticles;

[0037] b) Add sodium citrate solution to the ferroferric oxide magnetic nanoparticles prepared in step a), heat to 100°C, stir at 10000rpm for 2h, then centrifuge at 8000rpm for 20min, and centrifuge again after washing the obtained precipitate, so Repeat 2-5 times, and finally dry...

Embodiment 3

[0044] An efficient and environmentally friendly seawater desalination treatment process, comprising the following steps:

[0045] (1) Preparation of sodium citrate modified magnetic nanoparticles draw solution

[0046]a) Ferric chloride and ferrous chloride are respectively dissolved in 100ml distilled water with a substance ratio of 1:2.5, and then added dropwise to the sodium hydroxide solution, under the protection of an inert gas, under the state of 2500 rpm Stir for 40min, then heat to 75°C, continue to stir for 3h, naturally cool to room temperature, then centrifuge at 5500rpm for 15min, wash the obtained precipitate to neutrality, dry at -16~-18°C for 14h in vacuum to obtain tetraoxide Triferromagnetic nanoparticles;

[0047] b) Add sodium citrate solution to the ferroferric oxide magnetic nanoparticles prepared in step a), heat to 85°C, stir at 8500rpm for 1.2h, then centrifuge at 6000rpm for 10min, and centrifuge again after washing the obtained precipitate, Repeat...

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PUM

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Abstract

The invention discloses an efficient and environment-friendly seawater desalination treatment technology. The technology comprises the following steps that firstly, after raw water is heated and then passes through one side of a forward osmotic membrane, a sodium citrate modified magnetic nanoparticles draw solution flows into the other side of the forward osmotic membrane, seawater desalination treatment is completed through the permeation effect, and a diluted draw solution is obtained; then, the diluted draw solution is concentrated and reutilized. The seawater desalination treatment technology is high in efficiency, low in cost, economical and environmentally friendly, and little pollution is caused by the membrane.

Description

Technical field: [0001] The invention relates to the field of water treatment, in particular to an efficient and environment-friendly seawater desalination treatment process. Background technique: [0002] Rapid population growth and depletion of fossil fuels have made water and energy the two most important resources in the world. Water shortage and energy crisis plague many parts of the world. It is reported that more than 1.2 billion people in the world lack clean and healthy drinking water, which seriously restricts economic development, social progress and improvement of people's living standards. Fresh water exists in rivers and lakes, mountain snow and glaciers, underground soil rocks and the atmosphere. However, fresh water accounts for a very small proportion of water resources. 97.3% of the total water on the earth's surface is sea water. The increasing shortage of fresh water resources makes more and more Countries and regions are vigorously developing seawater d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44B01D61/00C02F103/08
CPCY02A20/131C02F1/445B01D61/005C02F2103/08
Inventor 叶剑
Owner 叶剑