The invention provides a
freshwater fish recirculating aquaculture system and method, and relates to the technical field of
aquaculture. The culture
system comprises a culture pond, a microfilter, a biological pond, a
water storage pond,
aeration equipment, disinfection equipment and
oxygen production equipment. The
freshwater fish recirculating aquaculture system has the advantages that the heights of the culture pond, the microstrainer, the biological pond and the
water storage pond of the culture
system are sequentially reduced, the culture pond, the microstrainer, the biological pond and the
water storage pond are sequentially connected through the water return
pipe, and the bottom of the water storage pond is connected with the water inlet
pipe through the circulating water pump. Therefore, the running
energy consumption of the whole
system can be reduced, and the breeding cost is reduced;
aeration equipment is arranged in the
water storage tank,
oxygen generation equipment connected with the
aeration equipment can pump high-concentration
oxygen into the
water storage tank to improve the concentration of dissolved oxygen in water, water is injected into the culture pond at a certain incident angle through water outlet holes in a water inlet
branch pipe in the
water storage tank, a stable flow field is formed in the water in the culture pond, and the culture density of the culture system is improved.