Filtration monitoring and control system

摘要

A method of monitoring and controlling a filtering system, said method comprising the steps of: i) determining resistance values of filtering elements used in the filtering system (5) at predetermined times during the backwash cycle of the system by monitoring a number of operating parameters of the system; ii) calculating a backwash efficiency value representative of the efficiency of the backwash cycle of the filtering system (5) using the resistance values determined in i); and iii) controlling the operation of the filtering system in dependence on the value of the backwash efficiency calculated.