Two Options for Treatment of Acidic Organic Industrial Wastes

Abstract

The treatment of acidic, organic, industrial wastes poses many problems. These wastes are characterized by a high organic concentration and pH values approaching zero. The classic treatment processes (incineration, physicochemical treatment, solidification) are plagued by problems with corrosion, by-products formation and ultimate disposal. This paper proposes two new processes for treating these wastes. The first technique is a pressurized oxidation process at high temperature. Results show total organic carbon (TOC) removal above 96%. The second proposed technique is an improved solidification which incorporates an adsorbent into the solid to immobilize the organic content. A very thick sludge (solids about 60%) is obtained which dries very quickly. Tests on the solids indicate that any leachate formed will be much lower in strength than leachate from the classic solidification process. Landfill disposal of the solidified waste is possible under proper conditions.