Seawater desalination system and method with low energy consumption
A low energy consumption, seawater technology, applied in the field of chemical engineering, can solve the problem that the cost of water production cannot match the price of tap water, and achieve the effects of low energy demand, energy consumption and cost reduction
Active Publication Date: 2019-01-18
胡滨
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Problems solved by technology
[0002] Reverse osmosis membrane desalination, which is usually used in the seawater desalination industry, is the lowest-cost process, but it still requires high-pressure and large-flow circulation pumps and at least 5:1 wastewater to desalinate and produce water, so that a lot of energy is consumed in the high-pressure and large-flow circulation process. Moreover, the wastewater flow rate is more than five times that of the produced water, and the cost of produced water cannot match the price of conventional tap water
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[0026] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0027] Such as figure 1 Shown is a low-energy seawater desalination system, which includes multiple reverse osmosis membrane units.
[0028] Further, the reverse osmosis unit includes a plurality of reverse osmosis membrane surfaces 6, the reverse osmosis membrane surfaces 6 are connected to the floating ball 9 through the pull wire 7 and hoisted below the sea surface, and the bottom of the reverse osmosis membrane surface 6 is connected with a soft The pipe 5 and the hose 5 are connected with the confluence rack pipe 4, the end of the confluence rack pipe 4 is connected with the vertical pipe 8, the bottom end of the vertical pipe 8 is connected with the fresh water storage tank 3, and the interior of the fresh water storage tank 3 is set There is a water pump 2, and the top of the fresh water storage tank 3 is connected with the buoy 10, and the water...
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The invention discloses a system and a method for desalting seawater at low energy consumption. The system comprises a plurality of reverse osmosis membrane units. The reverse osmosis membrane units comprise a plurality of reverse osmosis membrane surfaces, the reverse osmosis membrane surfaces are connected with float balls by stay wires and are lifted below sea surfaces, hoses are connected with the bottoms of the reverse osmosis membrane surfaces and are connected with a flow gathering bent frame pipe, the tail end of the flow gathering bent frame pipe is communicated with a vertical pipe, a freshwater storage tank is connected with the bottom of the vertical pipe, a water pump is arranged inside the freshwater storage tank, the top of the freshwater storage tank is connected with a buoy, the water pump is connected with a freshwater drain pipe, and the freshwater drain pipe is arranged inside the vertical pipe. The system and the method for desalting the seawater at the low energy consumption have the advantages that the system can be arranged at the underwater depths of 50 meters approximately, and reverse osmosis membranes can be automatically cleaned under the effects of static pressures of water and natural flowing actions of the water by the aid of the reverse osmosis membrane units with the reverse osmosis membrane surfaces which are spread or are wound over high distances.
Description
technical field [0001] The invention belongs to the field of chemical engineering, in particular to a low-energy seawater desalination system and method utilizing static pressure of water body and self-cleaning reverse osmosis membrane in natural flow of water body. Background technique [0002] Reverse osmosis membrane desalination, which is usually used in the seawater desalination industry, is the lowest-cost process, but it still requires high-pressure and large-flow circulation pumps and at least 5:1 wastewater to desalinate and produce water, so that a lot of energy is consumed in the high-pressure and large-flow circulation process. Moreover, the waste water flow rate is more than five times that of the produced water, and the cost of produced water cannot match the price of conventional tap water. [0003] Patent CN1018962511B discloses a low-energy seawater desalination system, method and method, and relates to a low-energy seawater desalination system, method and m...
Claims
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IPC IPC(8): C02F1/44C02F103/08
CPCY02A20/131
Inventor 胡滨
Owner 胡滨