Summary of the causes of fouling in reverse osmosis membranes in ultra-pure water production equipment

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This post was last edited by hesonchang214 on 2020-2-22 09:51. 1. Damage to the performance of the reverse osmosis membrane leads to membrane fouling. 　　2. Frequent changes in water quality lead to membrane fouling: Changes in the quality of the raw water compared to what was specified during design increase the pre-treatment workload. The presence of more impurities in the incoming water, such as inorganic substances, organic matter, microorganisms, particles, and colloids, increases the likelihood of membrane fouling. 　　3. Film contamination caused by untimely cleaning and incorrect cleaning methods: During use, in addition to the normal degradation of performance, untimely cleaning and incorrect cleaning methods are also important factors that lead to severe film contamination. 　　4. Incorrect dosing of chemicals: When using composite polyamide membranes, since these membranes have poor resistance to residual chlorine, disinfectants such as chlorine are not applied in the proper manner. Additionally, users do not pay enough attention to preventing microbial contamination, which can easily lead to microbial contamination. 　　5. Membrane surface wear: The membrane elements may become clogged by foreign substances or their surfaces may suffer wear (due to particles such as sand). In such cases, it is necessary to use detection methods to identify the damaged elements within the system, modify the pretreatment process, and replace the membrane elements.