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.
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