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Desalination process for high recovery ratio seawater (brackish water)

A technology for desalination of brackish water and high recovery rate, which is applied in the field of seawater and brackish water desalination process, high recovery rate seawater brackish water desalination process, can solve the problems of short service life of reverse osmosis membrane, and achieve comprehensive utilization, The effect of increasing production and simple process

Inactive Publication Date: 2004-12-08
天津市海跃水处理高科技有限公司
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Problems solved by technology

The reverse osmosis seawater desalination method commonly used now is "multi-media filtration + activated carbon filtration + security filter + reverse osmosis membrane", and reverse osmosis is generally a first-stage reverse osmosis membrane, and the system recovery rate is only 30%-40%. Permeable membranes also have a short service life

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  • Desalination process for high recovery ratio seawater (brackish water)
  • Desalination process for high recovery ratio seawater (brackish water)

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Embodiment Construction

[0024] figure 1 In the process flow diagram of the seawater brackish water desalination process shown, the high recovery rate seawater brackish water desalination process of the present invention mainly includes precipitation treatment, sterilization treatment, filtration treatment, ultrafiltration treatment, pressurization treatment, raw water reverse osmosis desalination Treatment, energy recovery and inter-stage pressurization treatment, concentrated water reverse osmosis desalination treatment, first-stage and second-stage concentrated water discharge, product water sterilization treatment and clean water discharge.

[0025] figure 2 The main equipment for realizing the seawater brackish water desalination process with high recovery rate shown is mainly composed of the delivery pipeline 2, the water intake pump 3, the automatic cleaning filter 4, the ultrafiltration water delivery pump 5, the ultrafiltration membrane group 6, the high pressure pump 7, the pipeline 8. Fir...

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Abstract

A process for desalinating seawater with high recovery rate of fresh water (more than 60%) includes such steps as depositing, disinfecting, filtering, ultrafiltering, pressurizing, taking reverse osmosis of raw water, energy recovering, intersegment pressurizing, taking reverse osmosis of fresh water, discharging concentrated water, disinfecting and discharging fresh water.

Description

technical field [0001] The invention relates to a seawater brackish water desalination process with a high recovery rate, in particular to a seawater and brackish water desalination process including ultrafiltration and reverse osmosis processes, which can be used in both the field of seawater desalination and the field of brackish water desalination . Background technique [0002] Dozens of seawater and brackish water desalination methods have emerged, mainly including distillation, membrane, electrodialysis and freezing. Among the many methods, the following are mainly used in industry, namely multi-stage flash distillation (MSF), reverse osmosis (RO), multi-effect distillation (ME or MED) and pressure vapor distillation (VC.), in addition to is electrodialysis (ED). [0003] Among several major desalination methods, the reverse osmosis method has the fastest development speed, and the desalination cost has also dropped the fastest. The r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/04
CPCY02A20/131
Inventor 阮国岭赵河立初喜章尹建华
Owner 天津市海跃水处理高科技有限公司
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