Floating media biofilter

Details Floating media biofilter Floating media biofilter

Filed on

1991-10-31

Date issued

1992-06-30

Examiner

Silverman, Stanley S.

Patent Class

Liquid purification or separation

SubClass

With gas-liquid surface contact means

Other Related Categories

210151, 210219, 2102212, 210616, 210618, C02F 306

Type

Patent

Status

active

Patent number

051260425

Description

ABSTRACT:
A biofilter is provided, including a tank, having a bottom, a top and a sidewall having a lower portion which is inwardly sloping toward the bottom; floating filter media in the tank, the media forming a floating media pack when the tank is filled with liquid and the media are undisturbed, the media pack having a bottom and a top; a screen having openings adapted to prevent the floating filter media from passing therethrough, positioned in the tank between the bottom of the tank and the top of the tank; an agitator having a blade, the agitator being attached to the tank and adapted such that the blade is at least partially imbedded in the media pack when the tank is filled with liquid; an inlet line fluidly connected to the tank below the screen; a sludge drain line fluidly connected to the lower portion tank below the screen; a sludge valve, positioned in the sludge drain line; and an outlet line fluidly connected to the tank above the screen.

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#11335 Apr. 3, 1990 Vacherie Machine Works, Inc.
#11336 Apr. 19, 1990 Vacherie Machine Works, Inc.
#10050 Oct. 16, 1990 Vacherie Machine Works, Inc.

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