Deposit monitoring device for water treatment device, water treatment device, operating method for same, and washing method for water treatment device

摘要: A deposit monitoring device is provided with: a non-permeating water line (L11) for discharging (15) wherein dissolved components and dispersed are concentrated from (11) to be treated separation membrane obtaining permeating by concentrating the means of membrane; first detecting unit (24A) in branch (L12) branched (L11), using part that has off as detection liquid (15a), having (21A) (15a) separated into (22) (23) detection; deposition condition altering conditions deposits flow rate measuring measures one or both detection.