Interactions of noncompetitive inhibitors on the nitrification process

The wastewater of nitrogenous fertilizer industries usually has an ammonium concentration of 20. 0 to 4,000. 0 mg/L, along with varying concentrations of arsenic, chromium, and fluoride. To reduce these high ammonium concentrations in nitrogenous wastewater to ecologically acceptable levels, biological nitrification-denitrification may be a promising method. The presence of arsenic, chromium, and fluoride may dictate against the choice of nitrification as a reliable ammonium removal alternative. This paper reports on a study into interactive phenomena under shock load in a fixed-film, packed-bed reactor. The results of the study will make it possible to design more adequately nitrification systems and operational procedures to maintain efficient and reliable nitrification.