Injection wells make possible the water reuse system for the city of St. Petersburg, Florida

Oxidation of sulfides following anaerobic municipal wastewater treatment for non-potable reuse applications

“…Irrigation applications could be particularly attractive because nutrient removal typically is not required and in places like St. Petersburg (FL), the occurrence of nutrients is sometimes touted as a benefit for the fields being irrigated. 9 Particularly in regions in the U.S. facing nutrient limits for conventional surface water discharge (e.g., Florida 7 ), irrigation applications are a popular alternative as a way of diverting nutrients from these discharges. These applications are prevalent in areas that rely on surface aquifers as drinking water supplies, such that percolation of nutrients in irrigation water would not ultimately result in exceedance of the 10 mg-N L −1 nitrate regulatory limit for drinking water.…”