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|1. (WO2018198245) REVERSE OSMOSIS MEMBRANE PLANT AND OPERATION METHOD FOR REVERSE OSMOSIS MEMBRANE PLANT|
|Applicants:||MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD.
|Title:||REVERSE OSMOSIS MEMBRANE PLANT AND OPERATION METHOD FOR REVERSE OSMOSIS MEMBRANE PLANT|
A reverse osmosis membrane plant includes: a reverse osmosis membrane device 15 to which an inflow water line L1 for introducing influent water 11 is connected and which has a reverse osmosis membrane 14 for obtaining permeated water 12 obtained by removing a salt from the influent water 11 and concentrated water 13 in which the salt in the inflow water 11 is concentrated; a branch line L11 branching from the influent line L1 and branching a part of the influent water 11 as inspection water 21; an inspection container 22 to which the branch line L11 is connected and which causes the inspection water 21 to pass therethrough; at least one inspection carrier 23 which is accommodated in the inspection container 22, to which a biofilm derived from the inspection water 21 adheres, and which is made of a material having adhesiveness to the biofilm higher than that of the material of the reverse osmosis membrane 14; and a biofilm inspection device which stops the passage of the inspection water 21 to the inspection container 22 and which inspects the amount of the biofilm adhered to the inspection carrier 23.