Self-cleaning seawater desalination device and device

A desalination device and self-cleaning technology, applied in seawater treatment, general water supply conservation, heating water/sewage treatment, etc., can solve problems such as water shortage, and achieve excellent results, high membrane flux, and strong practicability.

Active Publication Date: 2017-05-10
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: In view of the problems existing in the prior art, the present invention provides a seawater desalination device and method with good effect, low cost and long service life, which is suitable for families in coastal cities or coastal factories. It can desalinate seawater and automatically Clean and convenient for daily use of coastal families, so as to solve problems such as water shortage and achieve the purpose of saving water resources

Method used

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  • Self-cleaning seawater desalination device and device
  • Self-cleaning seawater desalination device and device
  • Self-cleaning seawater desalination device and device

Examples

Experimental program
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Effect test

Embodiment 1

[0036] This embodiment provides a self-cleaning seawater desalination device, such as figure 1 As shown, it includes a water inlet module 1, a membrane treatment module 2, a water collection module 3, a condensation module 4 and a water circulation module.

[0037] Such as figure 1 As shown, the water inlet module 1 specifically includes a seawater pool 101, a water inlet pump 102, and an ion removal device 103. The water inlet pump 102 is connected to the seawater pool 101 and the ion removal device 103 through a pipeline, and the ion removal device 103 is connected to the membrane processing module 2 through a pipeline. On the hot side, the ion removal device 103 can remove Ca2+ and Mg2+ ions in seawater to prevent the formation of scale and block the micropores in the PVDF hydrophobic microporous membrane.

[0038] Such as figure 1 As shown, the membrane treatment module 2 is provided with several membrane treatment units 201 and heating units 202, and the membrane treatm...

Embodiment 2

[0042] This embodiment is based on the desalination method of the device in Example 1. A 20cm*30cm PVDF hydrophobic microporous membrane coated with ZnO nano photocatalyst is used. Four membrane processing units are installed in the membrane processing module, which are arranged in the shape of "ten". This embodiment includes steps:

[0043] (1) Turn on the water inlet pump, and then introduce the seawater in the seawater pool into the membrane treatment module after passing through the ion removal equipment to remove Ca2+ and Mg2+ ions at a flow rate of 7kg / h;

[0044] (2) The refrigeration equipment refrigerates the water in the cold water pool and transports it to the cold side of the membrane treatment module, so that the water temperature on the cold side is maintained at 20°C to 35°C;

[0045] (3) The heating unit heats the hot side of the membrane processing module to maintain the temperature of the hot side at 50°C to 85°C;

[0046] (4) The seawater on the hot side ge...

Embodiment 3

[0052] This embodiment is a desalination method based on the device of embodiment 1, adopting a method coated with TiO 2 20cm*30cm PVDF hydrophobic microporous membrane of nano photocatalyst, 90 membrane treatment units are installed in the membrane treatment module, such as image 3 Arranged in a radial manner, the present embodiment includes steps:

[0053] (1) Turn on the water inlet pump, and then introduce the seawater in the seawater pool into the membrane treatment module after passing through the ion removal equipment to remove Ca2+ and Mg2+ ions at a flow rate of 160kg / h;

[0054] (2) The refrigeration equipment refrigerates the water in the cold water pool and transports it to the cold side of the membrane treatment module, so that the water temperature on the cold side is maintained at 20°C to 35°C;

[0055] (3) The heating unit heats the hot side of the membrane processing module to maintain the temperature of the hot side at 50°C to 85°C;

[0056] (4) The seawat...

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Abstract

The invention discloses a self-cleaning seawater desalination device which comprises a water inlet module, a membrane treatment module, a water collecting module, a condensing module and a water circulation module. The water inlet module is used for removing Ca<2+> ions and Mg<2+> ions in the seawater, and the seawater without ions is led to the membrane treatment module. The membrane treatment module adopts a PVDF hydrophobic microporous membrane coated with a nano photocatalyst active layer as a filter membrane, the seawater introduced by the water inlet module is heated by using a heating unit to form water vapor, the water vapor enters a cavity formed by the membrane by penetrating through the PVDF hydrophobic microporous membrane and then is condensed and liquified to form fresh water. The water collecting module is used for collecting the fresh water in the membrane treatment module. The condensing module is used for refrigerating the fresh water led from the membrane treatment module and then forming cold water. The water circulation module is used for water circulation of the whole device. The invention further discloses a self-cleaning seawater desalination method. The self-cleaning seawater desalination device is self-cleaning, low in cost, good in effect, convenient, simple and practical.

Description

technical field [0001] The invention relates to a seawater desalination treatment system and method, in particular to a self-cleaning seawater desalination device and method. Background technique [0002] With the rapid development of the economy and the rapid increase of the population, people's demand for fresh water resources is increasing, resulting in a serious water crisis. The shortage of water resources, the uneven distribution of water resources, and the pollution of water resources have become a major problem in the 21st century. In the entire hydrosphere, fresh water resources only account for 3% of the total water resources. Among these 3% fresh water resources, the fresh water resources that can be directly used by humans only account for 0.00768%, while seawater accounts for 97%. The cost is low, so seawater desalination technology has become the key to solving the problem of water shortage. [0003] Currently, seawater desalination technologies mainly includ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/08C02F1/30C02F103/08
CPCC02F1/08C02F1/30C02F2103/08Y02A20/124
Inventor 朱亮李玉坤黄慧慧殷绪华陈琳
Owner HOHAI UNIV
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