Evaluation, optimization and modeling of treatment chains: the example of the fluidized fixed culture process

Abstract

The acquisition of the knowledge needed to improve the design, sizing and operation of fast-developing processes such as membrane bioreactors, biofilters, moving bed biofilm reactors (MBBRs) and soon the IFAs (integrated fixed-film activated sludge) process is an emblematic activity of Cemagref's scientific teams. The work is carried out within the framework of industrial partnerships or by associating them with mainly public funding and in conjunction with targeted higher education institutions. Observations and experiments over long periods carried out on site are coupled with research work carried out under controlled conditions on a pilot scale. They have notably led to the dynamic modelling of the functioning of each of these treatment chains. This article presents as an example the case of moving bed biofilm reactors, also called MBBRs.