Pretreating method for reversing asmose seawater desalinating pulsing electromagnetic field
A pulsed electromagnetic field and reverse osmosis technology, applied in osmosis/dialysis water/sewage treatment, magnetic field/electric field water/sewage treatment, general water supply saving, etc. long and other problems, to achieve the effect of shortening the preprocessing process, shortening the processing process and reducing the cost
Inactive Publication Date: 2005-05-11
LIAONING UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
[0004] The purpose of the present invention is to solve the existing pretreatment process of long process flow, high concentration of suspended matter in seawater and the phenomenon of concentration polarization and self-pollution caused by membrane technology, the need for regular replacement of membranes or integrated membranes, The problem of high cost provides a pulsed electromagnetic field pretreatment method for reverse osmosis seawater desalination
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[0012] As shown in the figure, after the seawater passes through the grit chamber, it enters the first-level pulse electromagnetic field processor for first-level pulse electromagnetic field treatment, and the effluent enters the second-level pulse electromagnetic field processor for second-level pulse electromagnetic field treatment, and then enters the reverse osmosis unit. The pulse voltage of the primary pulse electromagnetic field treatment and the secondary pulse electromagnetic field treatment is 1-1000V, and the pulse frequency is 0.1-500Hz.
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A reverse osmosis seawater desalting pulsing electromagnetic field pretreatment is carried out by: passing seawater into the first and the second stage pulsing electromagnetic field treating apparatus by grit chamber, treating it there, and entering reverse osmosis unit at pulsing voltage 1-1000V and pulsing frequency 0.1-500Hz. Its advantages include low cost, no pollution, to improve water quality and decrease pretreatment process.
Description
technical field [0001] The invention belongs to a seawater desalination pretreatment method, in particular to a reverse osmosis seawater desalination pulse electromagnetic field pretreatment method. Background technique [0002] There are three main methods of traditional seawater desalination pretreatment. A kind of pretreatment for small seawater desalination device: the main objects to be removed by pretreatment are suspended solids and colloids, so a relatively simple pretreatment process can be used, namely seawater, bag filter or sand filter, security filter, reverse Penetration unit. Among them, the bag filter can be made of non-woven fabric and other materials to remove suspended solids with large particle sizes. After a certain period of use, it can be taken out and cleaned manually. The other is the pretreatment of mobile seawater desalination devices. Since the seawater near the coast is easily polluted, there are suspended solids, colloids and dissolved substan...
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IPC IPC(8): C02F1/44C02F1/48
CPCY02A20/131
Inventor 王建中杜慧玲周大奇齐锦刚王冰曹丽云
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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