Response pattern of nitrifying biofilm reactor to shock loading

The effects of shock loading on the performance of a nitrifying biofilm reactor were investigated over a wide range of conditions by varying the feed concentration of ammonium (S sub(O)) and dilution rate (D) respectively. It was found that variation in the effluent ammonium concentration as S sub(O) or D changes was subject to a semi-U shaped curve. The response patterns of the nitrifying biofilm reactor to one-step change in S sub(O) at a constant dilution rate, and to one-step change in D with keeping constant S sub(O) have no significant difference.