US 2008/0187400 A1 · Soil remediation apparatus

Abstract

A soil remediation apparatus comprises: a trommel screen having an inlet and an outlet; a trommel screen housing, and air extraction means operable to extract contaminant vapors volatilized by the trommel screen during soil aeration from the housing and to contaminant remediation means, such as a biofilter. The trommel screen housing comprises: a trough in which the trommel screen is mounted with its inlet inclined upwards; a front cover mounted at the front of the trough and having an impacted soil inlet in communication with the trommel screen inlet; a rear cover mounted at the rear of the trough and having a vapor discharge outlet above the trommel screen and a treated soil outlet in communication with the trommel screen outlet, and a vapor cover frame at least partially removably mounted to the trough and a flexible vapor cover removably mounted over the frame.

Claims15

Dependent claims

A soil remediation apparatus comprising:

(a) a trommel screen having an inlet and an outlet;
(b) a trommel screen housing comprising:
a trough in which the trommel screen is mounted with its inlet inclined upwards;
a front cover mounted at the front of the trough and having an impacted soil inlet in communication with the trommel screen inlet;
a rear cover mounted at the rear of the trough and having a vapor discharge outlet near the top of the trommel screen and a treated soil outlet in communication with the trommel screen outlet,
a vapor cover frame at least partially removably mounted to the trough and a flexible vapor cover removably mounted over the frame;
and
(c) air extraction means fluidly coupled to the vapor discharge outlet and operable to extract contaminant vapors volatilized by the trommel screen during soil aeration from the housing and to contaminant remediation means.

5 more elements

Dependencies are inferred from the claim text.

Soil remediation apparatus

Life of this patent

Soil remediation apparatus

Life of this patent

Abstract

Claims15