Reciprocating subsurface-flow constructed wetlands for treating high-strength aquaculture wastewater

摘要

A novel two-stage reciprocating wetland was operated over a period of six months to treat wastewater from a pilot-scale intensive tilapia aquaculture operation. High strength wastewater was applied to the system at BOD_5 loading rates in excess of 500 lbs/acre/day. Removal rates for BOD_5, total nitrogen and total phosphorus averaged 99, 95 and 84 percent respectively.