Does anyone know the formula for the effect of the flow velocity of the liquid medium on the filtering efficiency of a bag filter?
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If the liquid contains impurities that need to be filtered, is it better to have a fast flow rate for better filtering results, or should the flow rate be slower? Is there a mathematical formula relating the filtration efficiency to the flow rate?
Slow filtration speed yields good results. In most cases, it is based on experience; there is no formula for calculating it. We can communicate via private message. Our company is specialized in filter equipment and has over 20 years of experience; feel free to ask questions.
In my opinion, medium filters may have a greater impact; generally, mechanical filters do not have a very significant effect on precision, as precision depends on the accuracy of the filtering elements, but they do increase the pressure drop. The filtration rate depends primarily on the flux, which is the flow rate divided by the filtration area. With a constant flow rate, the higher the flow velocity, the smaller the filtration area, the worse the dirt-trapping capacity, and the faster the pressure drop occurs.