Membrane separation apparatus, membrane separation apparatus operation method, and evaluation method using the membrane separation apparatus

Abstract

A submodule is used to know exactly fouling of a membrane surface in a separation membrane module. The membrane separation apparatus of the present invention includes: a separation membrane module (1) configured to produce at least a permeate fluid from a feed fluid; and at least one submodule (2) having a separation membrane (23) made of the same material as a separation membrane in the separation membrane module (1). A deposition member (22) is provided on a surface of the separation membrane (23) in the submodule (2), and the feed fluid is supplied onto the surface.

Dependencies are inferred from the claim text.