ABSTRACT
Design of FWS wetlands may be roughly divided into two categories: sizing calculations and physical specifications. Sizing requires characterization of the incoming water and regional meteorology as well as the goals of wetland treatment, as discussed in Chapter 16. Here, a comprehensive sizing strategy is presented, based on the information assembled. Chapter 18 will deal with physical considerations, including the number of cells, layout, depth, bathymetry, soils and plants, structures, and lining. It is recognized that wetlands are almost never stand-alone treatment devices, but rather form part of a treatment train. Other components may be mechanical, such as clarifiers or filters, or more natural, such as settling basins or lagoons. More than one type of wetland may be involved at the same site-FWS, VF, and HSSF. This chapter focuses on only the FWS component of treatment systems.
