For this report, an existing biofilm model was examined in regard to its su
itability for the simulation of full scale trickling filter for nitrificati
on. The system was calibrated using the results ascertained in a measuring
campaign under dry weather conditions. The verification was done using the
results of a second examination period which included spells of stormwater
input. It was possible for all periods to satisfactorily illustrate the deg
radation performance of the simulated trickling filters in regard to dynami
cs and quantity. (C) 1999 IAWQ Published by Elsevier Science Ltd. All right
s reserved.