Aquacultural Approaches to Wastewater Nutrient Recycling

摘要

Five years of laboratory scale studies were conducted to access the potential of waste water aquaculture as a means of (1) developing a basis for a freshwater aquaculture industry in the U.S., (2) producing salable foods or other commodities to improve waste treatment plant economics, (3) reducing agricultural energy costs by eliminating fertilization needs, and (4) improving the quaity of waste treatment plant discharges. Sequential monocultures of waste water based food chains were investigated using algae, crustaceans, and fishes. All waste water used for the studies was fully secondarily treated, chlorinated, and dechlorinated. Results show that the use of artificial food chains for tertiary waste water treatment is feasible for the reduction of nutrient loading and for the production of valuable protein sources.