| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact fluid cleaning laminated filter high in regeneration efficiency and easy to manufacture. SOLUTION: A plurality of ring-shaped filter elements 1, each of which has a large number of through-holes 6 having a hole size larger than the particle size of a suspended substance formed therein so that the hole axes of them is turned in the thickness direction of the filter element and has notches 5-1, 5-2 formed to the inner and outer peripheral end parts thereof, are laminated and an inflow part of a liquid to be treated is provided on the side of one of the inner and outer peripheral lamination surfaces of each filter element and an outflow part of the liquid to be treated is provided on the side of the other one of them. Both of the filter elements have the same shape and are laminated in such a state that the center positions of the filter elements 1 are shifted between the adjacent filter elements and the through-holes 6 are partially exposed to the inner and outer peripheral lamination surfaces of the filter elements other than the notches 5-1, 5-2.
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