Water desalination device and water desalination method adopting same
A technology for water quality and raw water, applied in the field of desalination devices based on electrodialysis technology, can solve problems such as the difficulty of carrying and transporting hydrochloric acid, and achieve the effect of solving technical bottlenecks
Active Publication Date: 2017-01-11
SHANDONG TIANWEI MEMBRANE TECH
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Problems solved by technology
[0007] However, in some applications, such as electrodialysis seawater desalination systems for ships or islands, the carrying and transportation of hydrochloric acid is not easy, which has become an obstacle to the popularization of elec
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[0027] Such as figure 1 As shown, the desalination device includes an electrodialyzer 1, a bipolar membrane electrodialyzer 2 and a chelating resin ion exchanger 3. The inlet of the desalination chamber of the electrodialyzer 1 is communicated with the desalination tank 5 through the A pump 4 and the pipeline, and the outlet of the desalination chamber of the electrodialyzer 1 is communicated with the desalination tank 5 through the pipeline, so that when the A pump 4 starts, the The water in the desalination tank 5 is circulated through the desalination chamber. The inlet of the concentrating chamber of the electrodialyzer 1 is communicated with the concentrating pool 7 through the B pump 6 and the pipeline, and the outlet of the concentrating chamber of the electrodialyzer 1 is communicated with the concentrating pool 7 through the pipeline, so that when the B pump 6 starts, the concentrated The water in pool 7 circulates through the concentration chamber. The electrode so...
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The invention discloses a water desalination device. The water desalination device comprises an electrodialyzer, a bipolar membrane electrodialyzer and a chelating resin ion exchanger, wherein the electrodialyzer cyclically communicates with a desalination pool, a concentration pool and an electrode solution pool A; the bipolar membrane electrodialyzer cyclically communicates with an acid pool, an alkali pool, a salt pool and an electrode solution pool B; the chelating resin ion exchanger cyclically communicates with a solution pool which communicates with the acid pool, the alkali pool, the salt pool and the electrode solution pool B; the acid pool communicates with the electrode solution pool A and the chelating resin ion exchanger; the alkali pool and the salt pool communicate with the chelating resin ion exchanger through an alkali supply pipe and a salt supply pipe respectively. The bipolar membrane electrodialyzer can produce acid liquor and alkali liquor, the acid liquor can be used for regulating the pH value of an electrode solution of the electrodialyzer and preventing the electrodialyzer from scaling, the acid liquor and the alkali liquor can be further used for resin regeneration, hydrochloric acid and other agents are not needed to be added for operation of the whole system, and the technical bottleneck in water desalination development adopting electrodialysis is broken through.
Description
technical field [0001] The invention belongs to the technical field of water treatment, and relates to a water desalination device and method based on electrodialysis technology, in particular to a desalination device and method based on electrodialysis technology using seawater, brackish water or brackish water as raw water. Background technique [0002] Desalination is the technology and process of desalinating salt water into fresh water. It is an open source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water and is an important solution to the current shortage of fresh water in coastal areas, islands, ships and some inland areas. way. There are many desalination methods, which can be roughly divided into two categories: distillation (thermal method) represented by multi-stage flash evaporation and multi-effect evaporation, and membrane method represented by reverse osmosis and electrodialysis. (1) Flash ...
Claims
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Login to View More IPC IPC(8): C02F9/06C02F1/469C02F103/08
CPCC02F1/001C02F1/42C02F1/444C02F1/4604C02F1/4698C02F1/50C02F9/00C02F2103/08Y02A20/124
Inventor 连文玉吴坤龙傅荣强纪文超王伟
Owner SHANDONG TIANWEI MEMBRANE TECH