How can fiber bundles that have lost their processing capacity in a fiber filter be restored to their processing capacity?
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How can the fiber bundles in a fiber filter, which have lost their processing capacity after long-term use, be restored to their original processing capacity? Soaking the fibers in sodium hypochlorite does not result in much improvement in their processing capacity; are there any other ways to restore the fiber filter’s processing capacity without replacing the fiber bundles? The fiber filters currently in use at our facility have a processing capacity of 80 cubic meters per hour; now they can only handle around 50 cubic meters per hour! The anti-washing frequency is also high, but it still doesn’t solve the problem
What are the impurities? What is the precision level? What kind of solution is it? It should normally be discarded; try using gas backflow to see
There is a problem with the selection of this device; it should be able to clean itself automatically, and it should have a backwash mechanism.
Based on the information provided by the poster, the decrease in processing capacity is due to the fact that after prolonged operation, the backwashing process is unable to completely remove the sludge (inorganic and organic components) adsorbed on the surface of the filter media, which results in a reduction in the effective filtering area. Solution: 1. First, analyze the clay to determine its main components ； 2. For inorganic components, weak acids are used for cleaning ； 3. Biological sludge can be cleaned by alkali washing or a combination of alkali, detergent, and sodium hypochlorite ； 4. After resuming operation, considering increasing the intensity of the backwashing process per cycle may be advisable.
Compressed air is used for stirring and cleaning; usually, backwashing is performed once after 1–2 operating cycles.
First, it is necessary to understand what material hollow fiber membranes are made of Also, how does it operate – with internal pressure or external pressure?
Our treatment method: alkaline wash immersion + compressed air enhanced rinsing.
If the water contains oil, it can easily cause the fiber bundles to fail
What should be the concentration for alkali cleaning? Some use 1 or 2%, while others use 10% – how can one determine the effectiveness?
Soak it in medication according to the actual situation to enhance the recoil effect; if that doesn’t work, replace it.
Reply to 9# bird710: Alkaline cleaning at 5%, acidic cleaning at 5%, hypochlorous acid at 30%