| US 7,491,329 B2 | ||
| Hollow fiber membrane module, hollow fiber membrane module unit, membrane filtration device using the same and method of operating the same | ||
| Satoshi Takeda, Tokyo (Japan); Masumi Kobayashi, Toyohashi (Japan); Shinya Sueyoshi, Toyohashi (Japan); Masatoshi Kamata, Otake (Japan); Ikuo Kinoshita, Toyohashi (Japan); and Yoshihito Nakahara, Toyohashi (Japan) | ||
| Assigned to Mitsubishi Rayon Co., Ltd., Tokyo (Japan) | ||
| Filed on Oct. 17, 2006, as Appl. No. 11/581,566. | ||
| Application 11/581566 is a continuation of application No. 11/087593, filed on Mar. 24, 2005, granted, now 7,294,267. | ||
| Application 11/087593 is a continuation of application No. PCT/JP03/12335, filed on Sep. 26, 2003. | ||
| Claims priority of application No. 2002-283715 (JP), filed on Sep. 27, 2002. | ||
| Prior Publication US 2007/0029258 A1, Feb. 08, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B01D 63/02 (2006.01) | ||
| U.S. Cl. 210—257.2 [96/8; 96/9; 210/321.88; 210/321.89; 210/500.23] | 20 Claims |
| 11. A membrane filtration device comprising a membrane module unit disposed in a water tank, wherein
the membrane module unit comprises a plurality of hollow fiber membrane modules,
each of the hollow fiber membrane modules comprises a plurality of sheet-form hollow fiber membranes; and an anchoring member
that fastens the plurality of sheet-form hollow fiber membranes substantially parallel to each other while leaving at least
one end of the sheet-form hollow fiber membranes open, the anchoring member having a first side and an opposing second side,
a first end face that is substantially rectangular on the first side where outer surfaces of the hollow fiber membranes are
exposed, and a second end face that is substantially circular on the second side of said anchoring member where the at least
one end of the hollow fiber membranes left open is at said second end face, and
the following three relationships are satisfied where S (m2) is the membrane area of the membrane module unit, A (m2) is the area of projection of the membrane module unit, V′ (m3) is the volume of the membrane module unit, and V (m3) is the capacity of the water tank:
1000≤S/A≤2000 Equation (1)
500≤S/V′≤800 Equation (2)
0.70≤V′/V≤0.99 Equation (3).
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