Membrane module, membrane unit, and membrane separation device

摘要

A membrane separation apparatus in which a membrane clogging is moderated to lower a load to filtering. A plurality of separation membranes 4 are stored vertical and parallel to each other inside the a casing 6 formed with opening sections which respectively open in upper and lower directions thereby configuring a membrane module 3. In a flow passage through which treated water for the membrane module 3 flows, a water flow guide 5 is provided such that an opening area S2 of the flow passage through which treated water outflows is smaller than an opening area S1 of the flow passage through which treated water inflows. Additionally, a plurality of the membrane modules 3 are stacked one upon another in a direction of height of a casing thereby to configure a membrane unit 2. An air diffusing device 7 is disposed below this membrane unit 2 thereby configure a membrane separation apparatus 1.

主权项

1. A membrane module comprising:
a casing including a flow passage through which treated water outflows and a flow passage through which treated water inflows, wherein an opening area of the flow passage through which treated water outflows is smaller than an opening area of the flow passage through which treated water inflows; a plurality of membrane elements stored inside the casing, each membrane element comprising a flat membrane; and a water flow guide is disposed in the casing to reduce the opening area of the flow passage through which treated water outflows, wherein the water flow guide has a stepped shape including a first surface section and a second surface section closer to the opening of the flow passage through which treated water outflows, wherein the first and second surface sections are substantially parallel to surfaces of the membrane elements, and wherein the second surface section is closer to the membrane elements than the first surface section.