The Modulair package wastewater treatment system from Norweco has capacities ranging from 1,500 to 500,000 gpd, and is pre-engineered to accommodate current and future treatment needs. Plants employ the extended aeration process to quickly and efficiently oxidize organic compounds. It can be easily enlarged or modified and has the flexibility for any treatment requirement, including pretreatment, AFE, ASH, tertiary, disinfection, denitrification and phosphorous removal. Non-clog Evenair diffusers reduce plant maintenance, and the Air-lift surface skimmer simplifies maintenance. Heavy-duty reinforced precast concrete tanks provide durability and long life to each plant. Systems include delivery, tank setting, equipment installation, startup and service. 800/667-9326; www.norweco.com.