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The patented FAST^® Process stands for "Fixed Activated Sludge Treatment" -- and for a fixed-film, aerobic treatment system designed for tackling variable load and flow conditions. Proven in thousands of installations world-wide, FAST^® consists of tankage packed with completely submerged media. The FAST^® media creates a high surface area-to-volume ratio which combined with internal settling zones maintain constant bacterial growth during low-flow and peak usage. This results in stable operation on a daily basis.

FAST^® comes available in factory-built or field installed modules, providing high performance treatment in a minimal space. The popular Modular FAST^® arrangement handles smaller, variable flows generated from onsite applications, including schools, small developments, commercial and public facilities, and hospitality venues such as hotels, camps, and restaurants. No daily operation is required and provides significantly improved performance over traditional leach field and septic tank systems, especially when a nitrification/denitrifcation component is specified in permit or effluent requirements.