Unlocking the full capacity of existing wastewater assets is becoming essential as facilities face rising FTFT ratings and spill mitigation demands with limited resources for new builds. The Mobile Organic Biofilm™ (MOB) Process offers a practical way to elevate the performance of current infrastructure by intensifying treatment within the existing footprint.

Organic media is added to the bioreactors to freely circulate the entire secondary process. A retention screen positioned on the SAS line captures and returns the media to the system, enabling continuous recirculation of the mobile biofilms.

By systematically reducing suspended flocs, the primary cause of solids carryover during high velocity events, biomass transitions to form a dense biofilm layer on the media. These biofilms not only enhance BNR but also act as natural ballast, enmeshing with the suspended biomass and increasing the settling velocity of all secondary solids, strengthening FST performance and delivering consistently low SSVIs even during peak flows.

The presentation will highlight how the MOB Process has been successfully retrofitted across a range of UK installations. From rural works to new builds, the technology has supported higher FTFT resilience, reduced CSO volume and frequency, and enhanced BNR. Case studies, commissioning experience, and optimisation insights will be shared.