Header for filtration membrane and filtration membrane module comprising the same
Disclosed is a header which can prevent a fixing layer for fixing the filtration membrane in the header from being detached from the header and a filtration membrane module comprising the same. A filtration membrane module of the present invention comprises a filtration membrane, a header comprising a case having an opening at an upper part thereof and a partition dividing an inner space of the case into a first space for insertion of the filtration membrane and a second space for fixing the filtration membrane, and a fixing layer. The filtration membrane is potted in the fixing layer which, together with the case, forms a filtrate collecting space in the first space. The partition has a through-hole. The fixing layer exists in at least a portion of the first space, in the second space, and in the through-hole of the partition as well.
1. A filtration membrane module comprising:
a plurality of filtration membranes;
a header comprising a case and a plurality of partitions, wherein the header provides a first space for insertion of the plurality of filtration membranes and a plurality of discrete second spaces, the second spaces provided on at least one side wall of the case are spaced apart from each other by at least one groove formed on an inner surface of the side wall, the respective second space is separated from the first space and enclosed by the respective partition and a portion of the side wall, the respective partition has a through-hole providing a communication path between the first space and the respective second space, and the case and the partitions being integrally formed into a unitary body; and
a fixing layer including a first part disposed in the first space, a second part disposed in the second space, and a third part filling the through-hole of the partition,
wherein the plurality of filtration membranes are potted only in the first part and no filtration membrane is potted in the second part, and
the plurality of filtration membranes have an open end to be in fluid communication with a filtrate collecting space defined by the case and the first part of the fixing layer.
2. The filtration membrane module of claim 1 , wherein the partition's height is smaller than the side wall's height, and a portion of the fixing layer exists directly above the partition.
3. The filtration membrane module of claim 1 , wherein the groove has a tapered shape getting larger toward an outer surface of the side wall, and a part of the fixing layer is inserted in the groove.
4. The filtration membrane module of claim 1 , wherein the fixing layer comprises:
a first sub-fixing layer, the case and the first sub-fixing layer forming the filtrate collecting space in the first space; and
a second sub-fixing layer on the first sub-fixing layer,
and wherein the second sub-fixing layer exists in at least a portion of the first space, in the second space, and in the through-hole of the partition as well.
5. The filtration membrane module of claim 4 , wherein the first and second sub-fixing layers are formed of same material.
6. The filtration membrane module of claim 4 , wherein the second sub-fixing layer has a potting surface to be in direct contact with water to be treated, and
wherein the filtration membrane module further comprises a protection layer between the potting surface and the plurality of filtration membranes so that the potting surface of the second sub-fixing layer does not directly contact the plurality of filtration membranes.
7. The filtration membrane module of claim 6 , wherein the protection layer has lower hardness than the second sub-fixing layer.