High-performance seawater desalination reverse osmosis membrane modules and methods
By designing a pretreatment structure, the power of water flow drives a generator to produce electromagnetic force, which enables the filter plate assembly to tightly filter impurities. During cleaning, clean water is used to rinse away the impurities, thus solving the problem of clogging in the pretreatment structure and reducing the frequency and cost of filter media replacement.
CN122301320APending Publication Date: 2026-06-30QINGDAO BCTA DESALINATION CO LTD +2
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGDAO BCTA DESALINATION CO LTD
- Filing Date
- 2026-05-22
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
In seawater desalination, the pretreatment structure of existing reverse osmosis membrane modules is prone to clogging, leading to frequent filter media replacements, high costs, and difficulty in complete cleaning.
Method used
A pretreatment structure was designed, including a filter screen, a movable cylinder, and a filter plate assembly. The generator is driven by water flow to generate electromagnetic force, which makes the filter plate assembly tightly filter impurities. During cleaning, clean water is used to rinse away impurities, avoiding the need to replace the filter media.
Benefits of technology
This eliminates the need for frequent filter media replacements, reducing costs and improving filtration efficiency and the economics of equipment operation.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122301320A_ABST
Abstract
This invention relates to the field of seawater desalination technology, specifically to a high-performance seawater desalination reverse osmosis membrane module and method. The module includes a reverse osmosis structure with a pretreatment structure at its front for filtering large-diameter particulate matter from seawater. The pretreatment structure comprises a pretreatment tank, a filter screen, several movable cylinders, and several filter plate assemblies. A seawater inlet is located on the top surface of the pretreatment tank. A waterwheel is located inside the pretreatment tank, with a rotating shaft coaxially positioned in the middle of the waterwheel. A generator is located at the rear end of the rotating shaft. A cover is fixedly connected above the filter screen, and a base is located in the middle of the top surface of the cover. An electromagnet is fixedly connected below the base, and a permanent magnet is fixedly attached to the top surface of the uppermost movable cylinder. This module, by incorporating the pretreatment structure, filters seawater during normal operation. During cleaning, the gaps between the filter plate assemblies widen, allowing clean water to flush out impurities into the sea, eliminating the need for frequent filter media replacements and saving costs.
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