Submerged fixed-bed biofilm reactor systems from Active Water Solutions are pre-engineered for plug-and-play-type installation. They are an alternative to activated sludge systems and eliminate the need for the return activated sludge components of treatment systems, reduce sludge production, and make basic operation a breeze. They provide a stable environment for bacteria that resists washouts, shock loading, electrical blackouts, and that increases overall treatment effectiveness, which makes the system survivable. Their HVCF Membranes are self-cleaning, utilize higher flux rates and reduce energy consumption. 832-571-1111; www.activewatersolutions.com