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Title: Method and apparatus for destroying organic contaminants in aqueous liquids

Abstract

A method and apparatus for destroying organic contaminants, such as trichloroethylene, in aqueous liquids, such as groundwater, utilizing steam stripping integrated with biodegradation. The contaminated aqueous liquid is fed into a steam stripper causing the volatilization of essentially all of the organic contaminants and a portion of the aqueous liquid. The majority of the aqueous liquid is discharged from the steam stripper. The volatilized vapors are then condensed to the liquid phase and introduced into a bioreactor. The bioreactor contains methanotrophic microorganisms which convert the organic contaminants into mainly carbon dioxide. The effluent from the bioreactor is then recycled back to the steam stripper for further processing. 2 figures.

Inventors:
;
Issue Date:
OSTI Identifier:
5441480
Patent Number(s):
5246584 A
Application Number:
PPN: US 7-920961
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Patent File Date: 28 Jul 1992
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; CHLORINATED ALIPHATIC HYDROCARBONS; BIODEGRADATION; STEAM STRIPPING; GROUND WATER; DECONTAMINATION; SEPARATION EQUIPMENT; DESIGN; CHEMICAL REACTIONS; CLEANING; DECOMPOSITION; HALOGENATED ALIPHATIC HYDROCARBONS; HYDROGEN COMPOUNDS; MANAGEMENT; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; OXYGEN COMPOUNDS; PROCESSING; WASTE MANAGEMENT; WASTE PROCESSING; WATER; WATER TREATMENT; 540220* - Environment, Terrestrial- Chemicals Monitoring & Transport- (1990-); 560300 - Chemicals Metabolism & Toxicology

Citation Formats

Donaldson, T L, and Wilson, J H. Method and apparatus for destroying organic contaminants in aqueous liquids. United States: N. p., 1993. Web.
Donaldson, T L, & Wilson, J H. Method and apparatus for destroying organic contaminants in aqueous liquids. United States.
Donaldson, T L, and Wilson, J H. Tue . "Method and apparatus for destroying organic contaminants in aqueous liquids". United States.
@article{osti_5441480,
title = {Method and apparatus for destroying organic contaminants in aqueous liquids},
author = {Donaldson, T L and Wilson, J H},
abstractNote = {A method and apparatus for destroying organic contaminants, such as trichloroethylene, in aqueous liquids, such as groundwater, utilizing steam stripping integrated with biodegradation. The contaminated aqueous liquid is fed into a steam stripper causing the volatilization of essentially all of the organic contaminants and a portion of the aqueous liquid. The majority of the aqueous liquid is discharged from the steam stripper. The volatilized vapors are then condensed to the liquid phase and introduced into a bioreactor. The bioreactor contains methanotrophic microorganisms which convert the organic contaminants into mainly carbon dioxide. The effluent from the bioreactor is then recycled back to the steam stripper for further processing. 2 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {9}
}