There are several reasons for the rupture of stainless steel filter membranes, which can be referred to as follows:
1. Excessive pressure: The filtration pressure exceeds the rated pressure of the filter membrane (such as instantaneous pressure rise or long-term overpressure), causing the filter membrane to rupture under stress.
2. Improper installation: The filter membrane is not flat (with wrinkles), does not match the size of the filter shell, or experiences uneven force during tightening, resulting in local compression and rupture.
3. Incompatible medium: The filtered solution contains strong corrosive components (such as concentrated acid/alkali), which can damage the structure of the filter membrane material and cause a decrease in strength and rupture.
4. Lack of pre-treatment: The original solution contains large particle impurities, which block the pores of the filter membrane, causing a sudden increase in local pressure and breaking the filter membrane.
5. Membrane aging/quality issues: Membrane ultrafiltration has a long service life (becoming brittle due to aging), or has production defects (such as pinholes and uneven thickness), which can easily rupture.