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Seawater desalination device and method based on pressure-delayed osmosis and reverse osmosis

A technology of reverse osmosis and reverse osmosis membrane, applied in osmosis/dialysis water/sewage treatment, reverse osmosis, seawater treatment and other directions, can solve the problem of high-grade energy consumption, achieve compact structure and improve utilization efficiency.

Inactive Publication Date: 2016-04-13
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This solves the problem of consuming high-grade energy for seawater desalination using RO technology in traditional methods

Method used

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  • Seawater desalination device and method based on pressure-delayed osmosis and reverse osmosis
  • Seawater desalination device and method based on pressure-delayed osmosis and reverse osmosis

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] Such as figure 1 and figure 2 It is the seawater desalination device of the embodiment of the present invention, the difference is figure 1 The medium pressure transmission element is a piston, figure 2 The medium pressure transmission element is a silicone membrane. figure 1 and figure 2 The horizontal arrow in indicates the permeation direction of the solvent, where the solvent ...

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Abstract

The invention discloses a sea water desalination device based on pressure retardation osmosis and reverse osmosis and a method thereof. The sea water desalination device comprises a concentration difference power unit, a sea water desalination unit and a pressure transfer element positioned between the concentration difference power unit and the sea water desalination unit. The concentration difference power unit comprises a hollow seal water chamber No. 1, a hollow concentrated seawater chamber adjacent to the hollow seal water chamber No. 1, and an osmotic membrane positioned between the hollow seal water chamber No. 1 and the hollow concentrated seawater chamber, and the concentration difference power unit is used for converting salinity gradient power of sea water with different concentrations into static pressure. The sea water desalination unit comprises a hollow seal water chamber No. 2, a hollow fresh water chamber adjacent to the hollow seal water chamber No. 2, and a reverse osmosis membrane positioned between the hollow seal water chamber No. 2 and the hollow fresh water chamber, and under the effect of static pressure, the reverse osmosis membrane only allows water molecules to pass through, thereby achieving sea water desalination. The pressure transfer element can move or deform, and transfers static pressure to the seal water chamber No.2 through self moving or deforming. The device has a compact structure, only uses seawater salinity gradient energy for sea water desalination, does not consume high-grade energy and is green and environmental-friendly.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a seawater desalination device based on pressure-delayed osmosis and reverse osmosis utilizing salinity difference energy and a method thereof. Background technique [0002] At present, a large number of offshore islands and rocky reefs are scarce in fresh water resources, and there is an urgent need to use seawater desalination technology to prepare fresh water. Traditional seawater desalination technologies mainly include: seawater freezing method, electrodialysis method, distillation method, and reverse osmosis membrane method. Among them, the distillation method and the reverse osmosis membrane method are the main desalination methods, both of which rely on electric energy. The coal, oil and natural gas resources traditionally used for power generation are facing exhaustion, and electric energy cannot be transmitted to remote islands. Therefore, seawa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44B01D61/08C02F103/08
CPCY02A20/131
Inventor 舒良锁靳世平黄素逸郭少博谭凯丁文武王喜云梁鑫谭景艺周宇刘小康杨洪雷曾志东
Owner HUAZHONG UNIV OF SCI & TECH
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