A facility for the aquaculture of a first animal species that consumes protein and produces waste containing urea and nitrogenous sludge, includes: a hatchery comprising at least one clean-water laying tank, at least one clean-water hatching tank, and at least one clean-water larva tank; at least one clean-water pre-maturation tank and maturation tank, with means for supplying protein-rich feed; and at least one rearing tank containing water and biofloc containing bacteria that carry out nitrification of the waste. The facility further comprises: at least one second rearing tank for rearing a second animal species that acts as a biofilter for nitrogenous products; means for transferring the nitrogenous sludge that has accumulated in the first rearing tanks to the second rearing tanks; and means for transforming the species of the second species into feed protein and for transferring it to the pre-maturation and maturation tanks.

Provided is a micro-polluted water body ecological treatment method based on aquatic forest system construction. The method comprises the following steps: (1) investigating a pollution source of a micro-polluted water body; (2) estimating an annual pollution load of the micro-polluted water body which needs to be reduced; (3) designing aquatic animals and plants; and (4) constructing the aquatic animals and plants. By using a water body treated by means of the method in the present invention, an aquatic forest can be formed, and the synergistic effect, nutritional relationship, food chain relationship, etc., between organisms can be fully utilized for effective operation, such that not only can the combined benefits of water quality purification and water body resource utilization be achieved, but the organic unity of environmental protection, economic development, and the improvement of people's livelihood can also be realized.

Provided is a micro-polluted water body ecological treatment method based on aquatic forest system construction. The method comprises the following steps: (1) investigating a pollution source of a micro-polluted water body; (2) estimating an annual pollution load of the micro-polluted water body which needs to be reduced; (3) designing aquatic animals and plants; and (4) constructing the aquatic animals and plants. By using a water body treated by means of the method in the present invention, an aquatic forest can be formed, and the synergistic effect, nutritional relationship, food chain relationship, etc., between organisms can be fully utilized for effective operation, such that not only can the combined benefits of water quality purification and water body resource utilization be achieved, but the organic unity of environmental protection, economic development, and the improvement of people's livelihood can also be realized.