초록 ▼

The apparatus uses a combination of technologies for treatment of hazardous and nonhazardous liquid wastes. The first treatment step is an evaporation stage where the liquid wastes are heated. The resulting steam and vapors are then oxidized by photolysis and photolytic catalyzed ozone before they a

The apparatus uses a combination of technologies for treatment of hazardous and nonhazardous liquid wastes. The first treatment step is an evaporation stage where the liquid wastes are heated. The resulting steam and vapors are then oxidized by photolysis and photolytic catalyzed ozone before they are condensed. The steam and vapors are then condensed and the condensate is passed through a column of activated carbon. The activated carbon absorbs any unoxidized Chemical Oxygen Demanding (COD) species and aids in the control of any odors which may be emitted in the evaporation stage.

대표청구항 ▼

A system for the removal of metals and reduction of biological and chemical oxygen demand (BOD/COD) in washless photographic processing chemistry comprising: an evaporator including means for receiving effluent from said photographic processing, the effluent having metals dissolved therein and conta

A system for the removal of metals and reduction of biological and chemical oxygen demand (BOD/COD) in washless photographic processing chemistry comprising: an evaporator including means for receiving effluent from said photographic processing, the effluent having metals dissolved therein and containing certain volatile organic compounds and other substances characterized by BOD/COD; said evaporator including a corrosion-resistant vessel and having a temperature-resistant removable liner affixed to the interior of said vessel for collecting solids, a heat source for separation of vaporized water and volatile organic compounds from solids and complexed ionic metals; a photolytic cell and ozone generator fluidly coupled to said evaporator for receiving, oxidizing, and photolyzing the vaporized water and volatile organic compounds; a condenser fluidly coupled to said photolytic cell and ozone generator for receiving and condensing said photolyzed vapor into a condensate; an activated carbon adsorption cell fluidly coupled to said condenser for receiving and purifying said condensate, said adsorption cell comprising an activated carbon media and outlet means; an insulated enclosure for said system for conserving evaporative heat and dissipating condenser heat; and control means coupled to said evaporator, photolytic cell and ozone generator, condenser, and activated carbon adsorption cell for controlling the operation of the system.