Nitrification and total nitrogen removal in a super-oxygenated wetland.

A novel surface flow wetland demonstrates high-rate nitrification by recirculating water supersaturated with oxygen. Design of the wetland was based on two hypotheses: (1) Oxygen supersaturation of a recirculating sidestream would support nitrification in a surface flow wetland at rates comparable to aerated subsurface flow wetlands, and; (2) Nitrification would be maintained in cold water conditions (0.5-5.

Floating wetland islands as a method of nitrogen mass reduction: results of a 1 year test.

Floating wetland islands (FWIs) were tested in Pasco County, Florida, as a method of reducing total nitrogen (TN) in reclaimed water during reservoir storage. The Pasco County Master Reuse System (PCMRS) is a regional reclaimed-water transmission and distribution system providing wastewater effluent disposal for the county. Total daily mass loading from reclaimed water is limited by nitrogen content in the PCMRS watershed.