The United States of America As Represented by the Administrator of the

United States of America Environmental Protection Agency

Sbp Technologies, Inc.

Ieg Technologies Corp.

James G Mueller

Peter J Chapman

Bruno Bernhardt

Parmely H Pritchard

Suzanne Lantz

Fayaz Lakhwala

Eric J Klingel

William G Langley

An apparatus for the in situ, sequential anaerobic and aerobic treatment of contaminated water is disclosed which includes definition of a treatment flow path for water from a source of contaminated water and division of this flow path into a first region and a second region. An anaerobic bioreactor is disposed in the first region for anaerobic biodegradation of the contaminants within the water. An aerobic bioreactor is disposed in the second region, for aerobic biodegradation of contaminants within the water. The apparatus also causes the water to flow from the source of contaminated water into the treatment flow path, through the anaerobic bioreactor in the first region, through the aerobic bioreactor in the second region, and then back to the source of contaminated water. Also disclosed is a method for treating contaminated water, which includes the steps of defining a treatment flow path for water from a source of contaminated water, and dividing the flow path into distinct anaerobic and aerobic regions. Then the water is drawn from the area of contaminated water into the anaerobic region and anaerobically treating the contaminated water. Then the anaerobically treated water is caused to flow to the aerobic region, and the contaminated water is aerobically treated. Then the treated water is returned to the area of contaminated water.

Bioremediation well and method for bioremediation treatment of

A process for remediating contaminated soil or groundwater using a strain of Pseudomonas paucimobilis designated NRRL B-18512 is disclosed. Further, the process is a two stage sequential process wherein in the first stage bacteria which degrade low molecular weight polycyclic aromatic hydrocarbons, heterocyclic organic compounds and phenolics are used in a pretreatment step. However, the remaining high molecular weight compounds are treated in a second step of the process with the Pseudomonas paucimobilis strain since the strain is not inhibited by low molecular weight compounds because these are removed in the first pretreatment step. Therefore, repeated inoculation of the strain is not necessary and the overall process disclosed eliminates the inhibitory effects of the low molecular weight compounds. A Microorganism designated CRE1-13 is a useful strain for the pretreatment step in order to enhance activity and viability of the strain, Pseudomonas paucimobilis designated NRRL B-18512, useful for removing the remaining high molecular compounds in creosote from soil or groundwater. In addition Pseudomonas sp. strain SR-3 is also useful for removing high molecular weight compounds in creosote.

Bioremediation of soil or groundwater contaminated with compounds in

This invention concerns a biological process for remediating creosote-contaminated sites or environment sites containing polycyclic aromatic hydrocarbons generally found in creosote-contaminated sites. The biological process comprises novel bacterium, Pseudomonas paucimobilis strain EPA 505 sc., which can degrade recalcitrant chemical compounds.

Biological remediation of creosote- and similarly-contaminated sites

This invention concerns a biological process for remediating creosote-contaminated sites or environment sites containing polycyclic aromatic hydrocarbons generally found in creosote-contaminated sites. The biological process comprises novel bacteria which can degrade recalcitant chemical compounds.

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Gulf Breeze, FL, United States of America

James G Mueller