Liquid treatment apparatus

摘要

In a water treatment process and apparatus, the jets 21 (or 41) in the distributor arms 20 (or 40) of a percolating filter are kept clear from jamming by automatic actuation of plungers 27 (or 47) which enter the jets to dislodge any obstructions therein. The plungers may be mounted on individual brackets 24 associated with respective jets 21, or on a common axle 51 and actuated by a trailing dependent lever 50.