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Preparation device and method of first-stage reverse osmosis after chemical desalt optimization pure water

A technology of reverse osmosis device and preparation device, which is applied in the direction of osmosis/dialysis water/sewage treatment, general water supply saving, non-polluted water treatment, etc., and can solve the problems of lack of follow-up chemical desalination system, etc.

Inactive Publication Date: 2007-05-02
CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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Problems solved by technology

[0008] To sum up, there is a lack of a follow-up chemical desalination system that combines the advantages of the above two processes in this field.

Method used

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  • Preparation device and method of first-stage reverse osmosis after chemical desalt optimization pure water

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Embodiment

[0055] As shown in Figure 1, the first-stage reverse osmosis follow-up chemical desalination optimizes the pure water preparation device, including the water produced after the first-stage reverse osmosis unit to the decarbonizer unit 1 for removing free carbon dioxide in the water, passing through the intermediate water tank and the intermediate The water is pumped to the strong base anion exchanger unit 2 for removing residual anions in the water, and the positive and negative mixed ion exchanger unit 3 for removing residual cations and anions in the water, and finally the water is delivered to the pure water tank.

[0056] The channel 01a of the water produced by the primary reverse osmosis device is equipped with a decarburizer unit 1 for removing free carbon dioxide in the water, and whether the decarburizer is installed or not is determined according to the water quality of the produced water of the primary reverse osmosis device; if there is no decarburizer unit 1, the w...

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Abstract

An optimized apparatus for preparing purified water by reverse osmosis and chemical desalting has a strong alkaline anionic exchanger unit and a cation and anion mixed exchanger unit. Its preparing process is also disclosed.

Description

technical field [0001] The invention relates to a pure water preparation device and method, in particular to an optimized pure water preparation device and method for one-stage reverse osmosis subsequent chemical desalination. Background technique [0002] At present, with the construction of large-capacity units in power stations, the requirements for water purity are getting higher and higher. For example, the water supply TOC (total organic carbon) index, which has never been required before, is now required to be less than 200 μg / L, and at the same time requires pure water. The cost of the water preparation unit is low and the waste water discharge is low. [0003] Existing pure water preparation arts Applicable raw water quality advantage shortcoming Primary reverse osmosis device + first stage desalination + mixing bed higher salt content operational reliability Good, acid and alkali cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42C02F1/44C02F103/04
CPCY02A20/131
Inventor 蔡冠萍周来发
Owner CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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