Patent ID: 7258790

Claim:
A controlled eutrophication process comprising: flowing a wastewater containing a waste component comprising nitrogen, phosphorus or mixtures thereof into an algal growth channel; contacting the wastewater with a species of algae in the algal growth channel, the algae consuming and depleting the waste component from the wastewater; flowing a first portion of the algal laden water from the algal growth channel to a raceway, the raceway containing a first aquatic organism, the first aquatic organism consuming the algae in the water and excreting an algal biomass; flowing a second portion of algal laden water from the algal growth channel to a polishing chamber, the polishing chamber containing a second aquatic organism, the second aquatic organism consuming at least about 60% of the algae contained in the water, the second aquatic organism excreting an algal biomass; discharging water from the polishing chamber to an external water source; and collecting the algal biomass from the raceway and the polishing chamber.