Seawater desalination device and method

A kind of seawater, filter device technology

Inactive Publication Date: 2018-12-18
上海雷鸣水处理技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the reverse osmosis RO method, in the process of desalinating seawater, the scale-forming substances crystallize and block the RO membrane filter pores, the equipment maintenance cost is high, and the production efficiency needs to be further improved; in addition, the traditional reverse osmosis RO membrane method uses ion exchange for pretreatment The resin is used to adsorb calcium and magnesium ions, and the regenerated resin needs to be washed repeatedly, as well as adding chemical reagents to sterilize algae and subsequent filtration chemical reagents and other process steps. The filtration process is complicated and the operating cost is high.

Method used

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  • Seawater desalination device and method
  • Seawater desalination device and method

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Experimental program
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Effect test

Embodiment 1

[0037] A seawater desalination device, including a water intake system 1, a pretreatment system 2 and a seawater desalination and desalination system 3, each system is sequentially connected through pipelines; wherein,

[0038] The pretreatment system 2 includes a PP filter element filter device 21 and a pipeline-type NdFeB inner strong magnet 22, and the PP filter element filter device 21 is connected to the pipeline-type NdFeB inner strong magnet 22 through a pipeline; the PP filter element filters The device 21 is divided into two layers of decreasing filter layers inside and outside, the filter hole diameter of the outer filter layer is 5 μm, and the filter hole diameter of the inner filter layer is 1 μm; The width of the channel is adaptively adjusted between 0.5-0.7cm to form a narrow water flow channel, increase the water pressure, make the water flow cutting magnetic field strong, fully soften the heavy salt in seawater, and prevent scale formation on the reverse osmosi...

Embodiment 2

[0047] In terms of the technology of the specific embodiment 1 of the seawater desalination device described above, the PP filter element filter device 21 is subjected to quantum processing through the quantum chamber to inhibit microorganisms and algae; at the same time, the macromolecular bonds are broken to form a small molecular structure , to facilitate the decomposition of heavy salt molecules in the magnetic field.

[0048] Based on the above seawater desalination method, comprising the following steps:

[0049] (1) After the seawater is obtained, the seawater is input to the PP filter element filter device 21 for filtration, to filter out large particles, algae, and microorganisms in the seawater, reduce the turbidity of the seawater, and obtain the first pretreated seawater;

[0050] (2) Pass the first pretreated seawater through the NdFeB strong magnetic field to obtain the final pretreated seawater, in which the heavy salt ions decompose, and the softened sediment i...

Embodiment 3

[0054] In terms of the technology of the specific embodiment 1 of the above-mentioned seawater desalination device, the connecting pipe between the pipe-type NdFeB inner strong magnet 22 and the PP filter element filter device 21 is a curved pipe. Preferably, a 90° corner is set on the curved pipe near the entrance of the pipe-type NdFeB inner strong magnet 22 .

[0055] Based on the above seawater desalination method, comprising the following steps:

[0056] (1) After the seawater is obtained, the seawater is input to the PP filter element filter device 21 for filtration, to filter out large particles, algae, and microorganisms in the seawater, reduce the turbidity of the seawater, and obtain the first pretreated seawater;

[0057] (2) Pass the first pretreated seawater through the NdFeB strong magnetic field to obtain the final pretreated seawater, in which the heavy salt ions decompose, and the softened sediment is intercepted by the RO membrane and discharged with the wast...

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Abstract

The invention discloses a seawater desalination device and method, the seawater desalination device is provided with a pipe-type NdFeB inner strong magnet, through pretreatment of seawater, calcium and magnesium ions in heavy salts are decomposed to soften and loosen the heavy salts, and crystals can be prevented from attaching to and blocking reverse osmosis membrane holes, so that the reasonableservice life of a membrane can be prolonged; in addition, by the installation of the pipe-type NdFeB inner strong magnet, complex links needing filtration and removal after adding of a sterilizationagent in a traditional seawater desalination process can be reduced, the production process can be simplified; the salt content falls 20 ppm or below after two-stage reverse osmosis membrane filtration, and meets drinking water standards; the seawater desalination device has the advantages of reduced volume, high efficiency and environmental protection, and improves economic benefits; the longestservice life of the reverse osmosis membrane in the seawater desalination device can reach about 3 years. In the seawater desalination method, an appropriate magnetic field strength and water flow velocity through a magnetic field are determined, so that the decomposed calcium and magnesium ions are still in a loose and dispersed state when passing through the reverse osmosis membrane and do not scale in the membrane holes.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a seawater desalination device and method. Background technique [0002] The shortage of fresh water resources is increasingly affecting the sustainable development of the national economy and society. Seawater desalination is an effective way to solve the problem of water shortage in coastal areas. At present, the seawater desalination methods used in industry are mainly membrane method (reverse osmosis RO) and thermal method (multi-stage flash evaporation MSF and low-temperature multi-effect MED). Reverse osmosis RO desalination specifically passes seawater through the reverse osmosis membrane module after being pressurized by a high-pressure pump, and the water passing through the reverse osmosis membrane is fresh water. However, in the reverse osmosis RO method, in the process of seawater desalination, the scale-forming substances crystallize and bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C02F103/08
CPCC02F1/001C02F1/283C02F1/32C02F1/441C02F1/442C02F1/444C02F1/481C02F9/00C02F2103/08Y02A20/131
Inventor 雷财金
Owner 上海雷鸣水处理技术有限公司
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