Brackish water treatment system and method

By employing pretreatment, solar distillation, and halophyte purification, the problem of disconnect between brackish water treatment and ecological water replenishment in arid, semi-arid, and coastal tidal flat areas has been solved. This has enabled the ecological replenishment of freshwater and the resource utilization of concentrated saline water, thus meeting the needs of regional ecological governance and water resource utilization.

CN122444374APending Publication Date: 2026-07-24HUANENG XINJIANG ENERGY DEVELOPMENT CO LTD SOUTHERN XINJIANG CLEAN ENERGY BRANCH +1
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Patent Information

Application Number
CN202610751800.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Arid and semi-arid regions and coastal mudflats have abundant brackish water reserves, but these cannot be used directly. Direct discharge causes environmental pollution, and existing treatment methods are energy-intensive and wasteful of resources. Ecological water replenishment relies on natural precipitation or long-distance water transfer, which is costly and cannot achieve sustainable replenishment.

Method used

The system employs a pretreatment unit to remove impurities from brackish water, a solar distillation unit to separate fresh water and concentrated brine, an ecological water replenishment unit to transport fresh water to the ecological area, and a concentrated brine treatment unit to transport the concentrated brine to the halophyte planting area for purification, thereby achieving resource utilization and zero discharge of concentrated brine.

Benefits of technology

It has achieved effective treatment and resource utilization of brackish water, solved the problems of disconnection between ecological water replenishment and concentrated brine pollution, adapted to the water resource utilization and ecological restoration needs of arid, semi-arid and coastal mudflat areas, reduced energy consumption and achieved zero discharge of concentrated brine.

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Abstract

The invention provides a brackish water treatment system and method, and relates to the technical field of brackish water treatment.The system comprises a pretreatment unit, a distillation unit, an ecological water supplementing unit and a strong brine treatment unit; the pretreatment unit is used for pretreating brackish water raw water so as to meet the distillation water inlet requirement; the distillation unit is used for carrying out evaporation and condensation treatment on the pretreated brackish water to produce fresh water and strong brine; the ecological water replenishing unit conveys fresh water meeting the ecological water replenishing standard to the ecological region according to the water replenishing requirement of the ecological region; the strong brine treatment unit is used for conveying strong brine to the halophyte planting area, so that the strong brine is purified through halophytes. The system realizes cooperative operation of brackish water pretreatment, distillation, fresh water ecological water supplement and strong brine biological improvement, effectively solves the problems that brackish water treatment and ecological water supplement are disjointed and pollution is easily caused by improper strong brine treatment, and realizes resource utilization and zero emission of strong brine by virtue of halophyte.
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