초록 ▼

A method for economically creating useful thermal energy and decontaminating an aqueous stream containing dissolved organic pollutants which may be present in total concentration of 1 or 2 weight percent or as low as even less than 10 ppm. The stream of contaminated water is extracted with a once-th

A method for economically creating useful thermal energy and decontaminating an aqueous stream containing dissolved organic pollutants which may be present in total concentration of 1 or 2 weight percent or as low as even less than 10 ppm. The stream of contaminated water is extracted with a once-through countercurrent stream of substantially water-immiscible, non-polar mixed C10 to C20 hydrocabons to dissolve and remove organic pollutants and create a treated water stream which meets environmental standardes for re-use or for discharge to a municipal treatment facility or to the environment. The contaminated mixed hydrocarbon stream is transferred to an on-site power or heat-generating facility where it and its contaminants are burned at a temperature of at least about 1000°F. and a residence time of at least about 1 second to oxidize the contaminants and generate useful thermal energy, e.g., by creating steam which is expanded through a turbine to create electrical power via an interconnected electrical generator.

대표청구항 ▼

A method suitable for the extraction from a contaminated water stream of a wide variety of dissolved organic pollutants to render such stream suitable for reuse or for discharge to the environment or to another treatment method for removing different contaminants, which method comprises the steps of

A method suitable for the extraction from a contaminated water stream of a wide variety of dissolved organic pollutants to render such stream suitable for reuse or for discharge to the environment or to another treatment method for removing different contaminants, which method comprises the steps of pretreating a first stream of contaminated water to remove suspended solids therefrom, contacting said pretreated first stream of contaminated water with a countercurrent second stream of substantially water-immiscible, non-polar mixed hydrocarbons of chain lengths between about C10 and C20 which second stream extracts particular dissolved organic pollutants of interest and removes same from said first stream to create a treated water stream which meets environmental standards for re-use or for discharge to a municipal treatment facility or to the environment and which contains less than 10 ppm total of dissolved organic pollutants; separating a treated water stream containing not more than 10 ppm of dissolved organic pollutants of concern and a contaminated mixed hydrocarbon stream from said countercurrent contacting step; transferring said contaminated mixed hydrocarbon stream to a power or heat-generating facility and burning said stream and its contaminants at a temperature of at least about 1000°F. and a residence time of at least about 1 second; and either directing said treated stream for re-use, or discharging said treated water stream to the environment or to a subsequent treatment facility.