The SAM biological wastewater treatment process from Fluidyne Corporation provides high effluent quality while handling variable flows and loadings without the need for final clarifiers or RAS pumping and piping. The process includes built-in flow equalization to buffer peak and organic loading while also incorporating anoxic and aerobic zones for energy efficient BOD, TSS and nutrient removal. The system eliminates the need for the influent control valves associated with conventional SBRs while providing quiescent settling and decanting that is not possible with continuous-fill batch processes. It requires a small footprint and allows the ability to take an SBR offline while providing full treatment. It can handle flows from as low as 10,000 gpd up to 20 mgd. Pre-engineered package plants are available for smaller flows. 319/266-9967; www.fluidynecorp.com