Floc (biofilm)

Floc, in the context of biofilms, refers to aggregates of microorganisms, typically including bacteria, algae, and protozoa, that adhere to each other and to surfaces in aquatic environments. These aggregates can form a gelatinous matrix that consists of extracellular polymeric substances (EPS), which are produced by the microorganisms themselves. Floc formation is a natural process that occurs in a variety of settings, including freshwater, marine environments, and wastewater treatment systems.