PROBLEM TO BE SOLVED: To provide a method for separating and purifying a fluid while maintaining a high filtration flow rate. A method for separating and purifying a fluid containing valuable resources, wherein the separation and purification method includes a step of filtering the fluid containing the valuable resources in a stock solution tank, and the fluid containing the valuable resources is The filtration treatment in the filtration step results in a viscosity of 30 mPa · s or less at 20 ° C. and a shear rate of 25 s-1, and the filtration step is a hollow yarn having an inner diameter of 0.8 to 1.4 mm for valuable resources in the stock solution tank. This is a method of supplying a membrane to an ultra-filtration membrane module for filtration, and the filtration method is a method of filtering under the conditions of a filtration pressure of 0.08 to 0.2 MPa and a linear velocity of 0.7 to 1.4 m / s by a cross-flow method. There is a method of separating and purifying a fluid containing valuable resources by returning the purified liquid after filtration from the refined liquid line to the stock solution tank and draining the permeated liquid from the drainage line. [Selection diagram] None
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