Automatic filter system

Liquid purification or separation – Processes – Including controlling process in response to a sensed condition

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Details

210108, 210142, 21033301, 210340, 55 96, 55302, C02F 100

Patent

active

049230689

ABSTRACT:
A method and apparatus for automatically propelling a charge of backwash fluid by a compressed gas such as steam to backwash a filter in a filter pair. The method and apparatus provides for backwashing a filter with at least three backwash phases, a first mainly comprising a charge of backwash fluid passing through the filter with significant speed, a second relating to use of flashing steam for secondary cleaning and scrubbing of the filter elements, and a third relating to use of low pressure steam for autoclaving and sterilizing the filter.

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