Desalination apparatus and method

A kind of equipment and desalination technology, applied in chemical instruments and methods, water/sewage treatment, osmosis/dialysis water/sewage treatment, etc., can solve the problems of uneconomical production cost, expensive, heavy infrastructure cost, etc., and achieve minimum environmental impact the effect of

CN101044094BActive Publication Date: 2012-04-25安徽省科林环境生物技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-04-25

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Abstract

The invention discloses a desalination plant that permits the gravitational flow of seawater 1 to be pre-treated 2, 3 and subsequently to flow into a unit cell 5 submerged below soil surface. Reverse osmosis diffusion units 9 are maintained in each unit cell 5. Reverse osmosis takes place due to hydrostatic pressure difference in the unit cell 5 and the storage reservoir 11 into which the desalinated water flows. The pressure in the storage reservoir 11 is maintained at atmosphere pressure. The desalinated water is pumped out of the storage reservoir 11 and brine water 7 is pumped out from the unit cell 5. A plurality of unit cells 5 can be contained in a large vertical shaft column 6.
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Description

technical field

[0001] The present invention relates to equipment and methods for seawater desalination. In particular, the present invention relates to apparatus and methods for desalination by the reverse osmosis (RO) process. Background technique

[0002] Currently, there are two general classifications of seawater desalination. The first method is to evaporate the water by applying heat. Moisture is then collected from the condensed steam. The second method utilizes the well-known natural phenomenon of reverse osmosis, in which seawater is forced into a pressure vessel of a semi-permeable membrane that allows the water to permeate. Seawater reverse osmosis (SWRO) is gaining wider acceptance as a cost-effective desalination method due to the superiority of membrane technology. Commercial SWRO plant designs based on the prior art are relatively complex, requiring huge investments in machinery, equipment and equipment. However, such huge investments are still justified...

Examples

Embodiment Construction

[0070] The present invention will be described in detail with reference to preferred embodiments. The desalination facility is located close to the sea to easily draw seawater for desalination, preferably using a gravity flow method.

[0071] Preferred embodiments of the present invention will be described by way of illustration only and not limitation. refer to figure 1 , the seawater inlet 1 is located at a sufficient depth below mean sea level to ensure that the lowest sea level is higher than the seawater inlet when the tide is lowest. The seawater flows to the seawater filtration system 2 by gravity. Established systems for filtering seawater known in the art are employed to ensure that the seawater is filtered to remove solid particles in order to produce the "cleanest" quality possible by applying existing commercially available technology. Such techniques will not be described herein.

[0072] Next step Before the seawater enters the reverse osmosis step, according...