US Government As Represented by the Secretary of the Army

Scott Waisner

Kimberly Ann Griswold

Yao Chen

Victor F Medina

Chung-Rei Mao

Charles G Coyle

The present invention is directed to rigid filtration apparatus comprising a filter support and filter membrane. Such filter support is comprised of a central core. Radiating from the central core are a plurality of pleats composed of two angled walls terminating at a contact point. Such longitudinal walls circumscribe a longitudinal channel situated between the walls wherein the longitudinal channel is in communication with the central core. The longitudinal walls are comprised of a plurality of openings along the walls. A filter membrane having biocidal components may be utilized with the filter support to effectively treat contaminated fluid, gas or air. Alternatively, the composition of the rigid central core and the rigid pleats may be composed of different materials to selectively remove chemicals, biological components or pharmaceuticals in a multi-stage treatment process.

Pleated filtration apparatus having a filter membrane

Filter support

The present invention includes methods and a system for treating a mass of contaminated media using ammonia. The methods include determining the amount of ammonia required for treatment using various calculation methods and combining the ammonia with air or another carrier gas to create a gas mixture. The methods and system utilize at least one injection well inserted into the contaminated media to deliver the gas mixture over a period ranging from approximately 1 week to approximately 8 weeks.

In situ alkaline hydrolysis of subsurface contaminants using gaseous reactants

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Vicksburg, MS, United States of America

Scott Waisner