Reverse osmosis membranes, as artificial semi-permeable membranes mimicking biological semi-permeable membranes, are primarily used in the water purification field. These membranes can effectively remove dissolved salts, colloids, microorganisms, and organic matter from the incoming water, aiding in the purification of raw water. However, over time, membrane fouling can occur during operation. To prevent this issue, regular cleaning of the membrane elements is necessary. So, how should they be cleaned?
Online membrane cleaning refers to placing the membrane elements inside the original membrane housing and directly conducting a chemical cleaning. This cleaning method is extremely simple and convenient, with a short usage time; however, it may lead to incomplete cleaning and unsatisfactory results. This method can be employed when the reverse osmosis unit is only lightly polluted.What is offline cleaning?Offline cleaning refers to the process of removing membrane elements from the on-site reverse osmosis water production unit and placing them on an offline cleaning system, where they are treated with professional cleaning methods based on different contamination characteristics. This method is simple and convenient to operate, ensuring thorough cleaning. Remember, offline cleaning should only be used when the reverse osmosis membrane is severely contaminated or when online cleaning is ineffective.
