The concentration of the cleaning agent should be appropriate to avoid chemical damage and corrosion to the microfiltration membrane. The cleaning water requires clean water without impurities. Otherwise, impurities in the water will contaminate the microfiltration membrane and it will be difficult to clean.
When the microfiltration device stops running, it must be thoroughly cleaned and then sealed and stored. If it is out of service for a short period of time, the microfiltration device for processing liquor can be soaked and preserved with highly raw liquor. If it is not used for a long time, the microfiltration membrane should be removed and stored in a dry seal. When restarting, it should be cleaned according to the cleaning method of the membrane before it can be put into use.
Membrane fouling is an inevitable problem of microfiltration technology. The factors affecting membrane fouling are not only related to the characteristics of the membrane itself, but also related to the structure and operating conditions of the membrane module. Therefore, comprehensive consideration must be given to specific application objects.
To do a good job in the prevention and control of microfiltration membrane pollution, many factors need to be considered. At present, optimizing membrane operating conditions and improving the flow state of the membrane surface are the main means to prevent membrane pollution and concentration polarization. Although there are many new methods proposed, the ones that are actually used in practice are very limited. It is still necessary to continue to explore the exact pollution mechanism and find the prevention methods suitable for different systems to optimize the performance of the membrane and increase the life of the membrane. Obviously, there is still a lot of work to be done in this area.
Due to the diversity of pollutants, the cleaning of microfiltration membranes is a complicated subject. In short, it is very important to choose the most economical and effective cleaning agent and cleaning program. The maintenance of the microfiltration membrane also depends on different application objects.