MEMBRANE SEPARATION DEVICE INSTALLED WITH HOLE DIFFUSION TYPE OR HOLE DIFFUSION FILTERING TYPE MEMBRANE CARTRIDGE, AND MEMBRANE SEPARATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a separation method for performing material membrane separation utilizing diffusion of molecules and particles under a mild condition and capable of controlling flow speed and inter-membrane differential pressure on a primary side flow passage, and a separation device.

SOLUTION: The material separation method utilizes mainly difference of diffusion speed of molecules and particles. In the device having a pump or pumps on an inlet side or on an outlet side or on both sides of the primary side flow passage for separating fluid, flow speed and inter-membrane differential pressure can be adjusted by adjusting pump discharge force. The flow speed and inter-membrane differential pressure also can be adjusted by applying air pressure in a fluid tank connected to the inlet of the primary side flow passage as a means for pressurizing the fluid, or by increasing height of water storage to generate hydraulic head pressure.

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