Full-process reverse osmosis seawater desalination device and optimization method thereof
An optimization method, reverse osmosis technology, applied in chemical instruments and methods, osmosis/dialysis water/sewage treatment, seawater treatment, etc., can solve the problem of large power consumption
Active Publication Date: 2020-09-25
HANGZHOU DIANZI UNIV
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[0004]
The purpose of this invention patent is to solve the huge power consumption in the existing reverse osmosis seawater desalination process. This invention provides a full-process reverse osmosis seawater desalination device and its optimization method
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[0038] The present invention will be further analyzed below in conjunction with the drawings and specific embodiments.
[0039] Such as figure 1 As shown, a full-process system block diagram of a NBI optimization method for multi-objective problems of reverse osmosis seawater desalination. First, raw seawater 1 is extracted from the offshore water through a raw seawater intake pump, and then through a flocculation filter tank 2, a mechanical filter 3. The security filter 4 filters the raw seawater to obtain raw water with a turbidity of less than 0.2NTU and a sludge density index of less than 2.0. After that, the high-pressure pump 5 pressurizes the feed water to the SW30-HR380 reverse osmosis produced by Dow. In the membrane unit 7, the desalinated fresh water enters the product pool 9, part of the high-pressure concentrated seawater after reverse osmosis is discharged by the pipeline, and the other part is made up by the PX-220 energy recovery device 8 and booster pump 6 produc...
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The invention relates to a full-process reverse osmosis seawater desalination device and an optimization method thereof. According to the method, a normal boundary intersection (NBI) method is adopted, so that a favorable guarantee is provided for realizing the lowest energy consumption cost under the condition that the water quality reaches the standard in the reverse osmosis seawater desalination process. The invention provides a method of a line boundary intersection (NBI) method, the method comprises the following steps: performing system modeling on a reverse osmosis seawater desalinationpretreatment link and a reverse osmosis link; determining optimization parameters of each sub-problem, solving each sub-problem through a normal boundary intersection (NBI) method to enable the distance between a CHIM and a Pareto front edge to be maximum, and obtaining a Pareto solution with uniform distribution formed by solutions of each sub-problem. The invention provides favorable guaranteefor controlling optimal water quality and lowest cost in the reverse osmosis seawater desalination process, and has important meanings for energy conservation and emission reduction of reverse osmosisseawater desalination plants.
Description
Technical field [0001] The invention relates to reverse osmosis seawater desalination, in particular to a full-process reverse osmosis seawater desalination device and an optimization method thereof. Background technique [0002] Although the widespread application of reverse osmosis desalination technology has effectively alleviated the serious shortage of freshwater resources in coastal areas, its huge energy consumption has always been the main bottleneck restricting its development and application. How to control the parameters that affect water quality and energy consumption during the production process, and reasonably formulate the water production plan of each unit in the reverse osmosis desalination project, so as to improve the utilization rate of each equipment in the system, and realize the energy saving of the system under the premise of ensuring the quality of desalinated water Reducing consumption and effectively reducing the cost of water production has become a n...
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Login to View More IPC IPC(8): G06F30/20G06F17/11C02F1/44G06F111/06G06F111/10C02F103/08
CPCG06F30/20G06F17/11C02F1/441G06F2111/06G06F2111/10C02F2103/08Y02A20/131Y02A20/152
Inventor 赵磊王剑
Owner HANGZHOU DIANZI UNIV