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Abstract
The subject of this treatability study was groundwater polluted with ammonia (up to 300 mg l−1) and a number of organic contaminants known to be inhibitors of nitrification. During this study two treatment methods for nitrification inhibitors removal, activated carbon adsorption and Fenton's reagent, were tested. The efficiency of inhibitors removal was monitored using respirometry, bench-scale treatment system and chemical analyses (COD, TOC, GC/MS). Activated carbon adsorption and Fenton's reagent treatment were equally effective in removal of organic inhibitors of nitrification. The oxygen uptake and the rate of nitrification was found to be higher for the groundwater treated with Fenton's reagent compared to the groundwater treated with activated carbon, providing the same removal of TOC and COD by each treatment.