Patent ID: 8568596

Claim:
A membrane filtering device managing system comprising: a membrane filtering device that is formed by disposing and arranging a plurality of membrane elements along an axial line direction within a tubular pressure-resistant vessel and generates a permeated liquid by filtering a raw liquid with the membrane elements, the membrane elements being connected by at least one interconnector; and a managing device for managing the membrane filtering device, wherein in each of at least two membrane elements of the plurality of membrane elements, at least one sensor selected from the group consisting of an electric conductivity sensor for measuring an electric conductivity of the permeated liquid, a flow rate sensor for measuring a flow rate of the permeated liquid, and a pressure sensor for measuring a pressure of the raw liquid, and the managing device includes means for obtaining data that obtains data from the at least one sensor, means for storing comparison data that previously stores comparison data that represents a correlative relationship between a position along the axial line direction in the membrane filtering device and a standard value obtained from the at least one sensor, and means for comparing data that compares the data obtained by the means for obtaining data with the comparison data, and the means for comparing being operable for determining a deviation of sensor data with respect to a predetermined range of values corresponding to sensor position and operable to initiate an instructional signal concerning abnormality status of either a membrane element or interconnector, as applicable, based on the deviation.