Off-line cleaning device for reverse osmosis membrane

By designing an offline reverse osmosis membrane cleaning device, the problems of membrane scaling and fouling diffusion in the treatment of ferric phosphate wastewater were solved, achieving efficient cleaning and improved equipment stability, while reducing operating costs.

CN224331901UActive Publication Date: 2026-06-09BEIJING INNUO OPERATION & MAINTENANCE TECHNOLOGY SERVICE CO LTD
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Patent Information

Application Number
CN202521181782.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-10
Publication Date
2026-06-09
Estimated Expiration
2035-06-10

AI Technical Summary

Technical Problem

During the treatment of ferric phosphate wastewater, reverse osmosis membranes are prone to scaling and pore blockage, and online cleaning may lead to the spread of pollutants, affecting cleaning efficiency and equipment stability.

Method used

Design an offline reverse osmosis membrane cleaning device, including a frame, a cleaning water tank, a test water tank, a cleaning water pump, a security filter, and a quick-opening and quick-installing RO membrane housing. It supports offline cleaning of multiple membrane elements and improves cleaning efficiency and equipment stability by combining performance testing and specific cleaning agents.

Benefits of technology

It achieves an offline cleaning efficiency improvement of over 50%, extends filter life, reduces operating costs, reduces the risk of pollutant diffusion, and improves equipment operational stability.

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Abstract

The utility model relates to the technical field of membrane off-line cleaning devices, in particular to a reverse osmosis membrane off-line cleaning device which comprises a machine frame, a cleaning water tank is arranged on the machine frame, testing equipment is installed on the side wall of the cleaning water tank, and a circulating stirring valve, a cleaning backflow valve and a water supplementing valve are installed on the top of the cleaning water tank. The circulating stirring valve is connected with the cleaning security filter through a pipeline, one side of the cleaning security filter is communicated with the cleaning water tank through a pipeline provided with a cleaning water pump, the other side of the cleaning security filter is connected with the cleaning water inlet side of the quick-opening and quick-assembling RO membrane shell through a pipeline, and the off-line cleaning device supports performance testing of each membrane element. A specific cleaning agent and a cleaning process are selected according to pollution types, the cleaning efficiency is improved by 50% or above compared with an online mode, the cleaning water tank and the testing water tank are standby for each other, and the equipment operation stability is effectively improved; the security filter increases backwashing and is recoverable, the service life of the filter element is prolonged, and the operation cost is reduced.
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