How is the filtration area of a backwash filter calculated? How to determine the filtration area?
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Assuming the filter has 4 groups in total, with 18 filter elements in each group, and each filter element having a length of h and an outer diameter of D, then the total filtering area is calculated as 4*18*(D/2)2*h. Is that the correct way to calculate it? And how to determine the filtration area based on the processing volume?
This post was last edited by li*nji on 2019-3-12 at 15:48. The correct formula should be 4*18*2*3.14*(D/2)*h; the filtration area is determined based on the SCFT criteria
What is the SCFT indicator? Could you explain it in detail?
This post was last edited by Honey Home on 2019-3-14 at 12:33. If the diameter is D, it should be 4*18*(D/2)*π*h, right? If the outer diameter is D, then it would be 4*18*D*h, which gives the area.
SCFT stands for Standard Cake Formation Time, which is the time required to form a filter cake with a thickness of 1 CM under a filtration driving force of 0.1 MPa.
4*18*3.1416*D*H; the filtration area is determined by referring to the flow-pressure curve provided by the filter element manufacturer, based on the initial pressure drop and filtration accuracy
When calculating the filtration area, there are many influencing parameters; in addition to theoretical calculations, practical experience values are very important.
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