FBAS Overview

Fixed-Bed Biofilm Activated Sludge (FBAS)

Fixed-Bed Biofilm Activated Sludge (FBAS) is a type of Fixed Film Activated Sludge system that leverages the use of various natural AND engineered media to provide a habitat for a diverse fixed-film bacterial culture which metabolizes the contaminants in wastewater.



With nearly two-decades of experience in the development and design of fixed-film wastewater treatment solutions, Organica’s FCR (Food-Chain Reactor) represents the best-of-breed in FBAS wastewater treatment plants (WWTPs).


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These populations of organisms live in an attached form on fixed bed media inside the reactors, as opposed to being in constant motion as is the case with conventional solutions such as Activated Sludge or MBBR.

Providing a stationary habitat allows an incredibly diverse and robust biofilm to grow and thrive inside the reactors, ultimately offering significantly improved nutrient removal, energy efficiency, and resiliency, all in much less space than conventional approaches.


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