Grey water filter tank recovery system and filter backwashing sy

Details Grey water filter tank recovery system and filter backwashing sy Grey water filter tank recovery system and filter backwashing sy

1996-09-26

1998-06-02

Drodge, Joseph W.

Liquid purification or separation

With time control

Of additional fluid

210274, 210275, 210277, B01D 2446

Patent

active

057593876

ABSTRACT:
A grey water recovery system comprises a filter tank having a filter medium therein. Grey water is delivered to the filter tank by a delivery conduit and filtered grey water is collected in a sump which surrounds the filter tank. A pump removes the filtrate to a distribution system for irrigation and similar use. The recovery system includes a backwash system. The backwash system has a flow responsive poppet valve which permits clean backwashing water and pressurized air to flow upwardly through the filter medium while closing the normal filtrate flow path to the sump.

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