HOLLOW FIBER MEMBRANE MODULE FOR CROSS-FLOW FILTRATION AND OPERATION METHOD THEREOF

The present invention relates to a hollow fiber membrane module for cross-flow filtration including: a container having at least a raw water inlet, a raw water outlet, and a filtrate outlet; and a plurality of hollow fiber membranes housed in the container, in which in the plurality of hollow fiber membranes, an end portion on a raw water inlet side is sealed and an end portion on a filtrate outlet side is opened, and the plurality of hollow fiber membranes have a potting portion fixed by an adhesive at least in the end portion on the filtrate outlet side, a raw water side space in the container to which the raw water inlet and the raw water outlet are connected and a filtrate side space in the container to which the filtrate outlet is connected are separated by the plurality of hollow fiber membranes and the potting portion, and the raw water side space is in contact with an outer surface of the hollow fiber membranes, and a pure water permeability K (m3/m2/hr/50 kPa) of the hollow fiber membranes and an inner diameter Di (µm) of the hollow fiber membranes satisfy the following requirements: 2.0 ≤ K ≤ 20.0; and 350 ≤ Di ≤ 600.