As central sewers become more costly, and as businesses continue to spring up in rural areas, demand is rising for commercial-grade and larger-scale onsite systems. Manufacturers are responding with treatment units built to accommodate larger flow and treat higher-strength waste than residential applications generate. Here are some of the more recent innovations. Fusion Systems Fusion systems from Clarus Environmental treat 2,800 gpd and can be installed in a parallel configuration for more capacity. The all-in-one units receive raw sewage and output secondary effluent. They are efficient to operate and easy to maintain. 877/244-9340; www.clarusenvironmental.com.Recirculating biotower The Segflo recirculating biotower from
