The U.S. Geological Survey has developed a new technology for the removal of phosphorus from wastewater using iron oxide-based sorption media in a fixed bed process. The process offers the possibility of significant reductions in capital and operating costs for the removal of phosphorus because of the economy of the by-product media coupled with elimination of solid-liquid separation and sludge disposal required by conventional iron or aluminum-based coagulation processes. An additional feature of the technology is the capability to recover the phosphorus removed from wastewater as a potentially marketable fertilizer, thus closing the
recycle loop for phosphorus.
Philip L. Sibrell leads this effort and is a research engineer with the U.S. Geological Survey, at the Leetown Science Center in Kearneysville, West Virginia. U.S. Geological Survey won third place in Stage 2.