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RO membrane cleaning method and steps
Mar 01, 2019

The membrane element of the reverse osmosis membrane is a spiral wound structure, referred to as a coil structure. It consists of a multi-leaf bag, each of which consists of a membrane with two membrane faces facing each other, a product water channel between the two membranes, and a turbulent grid-like inlet channel placed on the membrane surface. The film bag is sealed on three sides with an adhesive, and the fourth side is opened on the porous water collecting pipe. Compared with other membrane element structures, such as tubular, plate and hollow fiber, it has many advantages such as uniform water flow distribution, high degree of pollution resistance, low replacement cost, simple external piping, easy cleaning and maintenance, and high degree of design freedom. It has become the main form of membrane element structure.


General procedure for cleaning RO membrane components


1. Pump the clean, free chlorine-free reverse osmosis product water from the cleaning tank (or the corresponding water source) into the pressure vessel and discharge for a few minutes.


2. Prepare the cleaning solution in a clean box with clean product water (different membranes require different cleaning solutions).


3. Circulate the cleaning solution in the pressure vessel for 1 hour or a preset time.


4. After the cleaning is completed, drain the cleaning tank and rinse it, then fill the cleaning tank with clean product water for further washing.


5. Pump the clean, free chlorine free product water from the cleaning tank (or the corresponding water source) into the pressure vessel and discharge for a few minutes.


6. After flushing the reverse osmosis system, run the reverse osmosis system with the product water discharge valve open until the product water is clean, free of foam or no cleaning agent.


Storage of RO membrane components


Reverse osmosis pure water equipment membrane components do not open the sealed package before loading into the pressure vessel, store in a cool dry place, avoid direct sunlight. Do not receive frozen ice.



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