How to determine the characteristics of the high-flow water filter element membrane?

The large flow water filter element membrane is one of the keys to its use, so we need to understand the performance and characteristics of the membrane in detail. So, how to test the relevant performance of the high-flow water filter element membrane? The main test procedures and methods are as follows: For high-flow water filter cartridges, the water intrusion method can be used to test. The hydrophobic membrane has strong water resistance. The smaller the pore size, the greater the pressure required to squeeze water into it. Therefore, under a certain pressure The pore size of the high-flow water filter element can be judged by the water flow squeezed into the filter membrane. Soak the high-flow filter element and the filter membrane in the solution, pressurize on one side through the air intake control system, adjust the air intake, as the pressure increases, the gas will be released from one side of the filter membrane, and the surface of the filter membrane will form a size For different bubbles, the corresponding pressure value of the bubble point can be judged by the instrument. When the gas pressure is 80% of the bubble point value of the high-flow water filter element, a large amount of gas perforation filtration does not occur, but a small amount of gas is dissolved in it, and then diffuses from the liquid phase to the other side, which is called diffusion flow. Because the bubble point value is a qualitative value, but the amount of bubbles cannot be accurately determined, and the diffusion flow value is a quantitative value, which can accurately determine the integrity of the filter and reflect the gap, flow rate and area of u200bu200bthe membrane, so it is more effective .

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