Raw water channel spacer, and spiral membrane element having same
A helical, membrane element technology, applied in the field of raw water flow path spacers, can solve the problems of reduced volume, increased osmotic pressure, and inability to obtain permeated water, and achieves the effect of inhibiting the formation of a concentration polarization layer
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[0036] Hereinafter, a filtration device including a spiral membrane element as one embodiment of the present invention will be described with reference to the drawings. In the following description, the "X" direction represents a direction parallel to the axial direction of the water collection pipe, and the "Y" direction and "Z" direction represent radial directions of the water collection pipe perpendicular to each other.
[0037] like figure 1 As shown, the filtration device 10 includes a raw water tank 12 for storing raw water such as tap water, and a spiral membrane element 20 for filtering the raw water. Raw water is supplied to the raw water tank 12 via, for example, a supply pipe L1. Furthermore, the raw water tank 12 is connected to a water supply pipe L2 that sends raw water to the spiral membrane element 20 . A pump 14 for drawing raw water from a raw water tank 12 and a pretreatment unit 16 for removing turbid components contained in the raw water are provided on...
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