Semi-factory pond internal circulation culture system

Abstract

The invention discloses a semi-factory pond internal circulation culture system, and belongs to the technical field of aquaculture. The semi-factory pond internal circulation culture system comprisesa culture unit, a pollution discharge unit and a water purification unit, and is characterized in that the water outlet of the culture unit communicates with the water inlet of the pollution dischargeunit; the water outlet of the pollution discharge unit communicates with the water inlet of the water purification unit, and the water outlet of the water purification unit communicates with the water inlet of the culture unit; the culture unit includes a water tank, an aeration oxygen-increasing device, a submerged air-lifting device, a first-stage auxiliary oxygen-increasing device, a second-stage auxiliary oxygen-increasing device, a dead water prevention device and a material-blocking device; the pollution discharge unit comprises a primary pollution discharge device and a secondary pollution discharge device; and the water purification unit comprises a water purification unit body, a water pushing device, a microporous oxygen-increasing machine and aquatic plants. The culture systemdisclosed by the invention can effectively improve the dissolved oxygen content in inlet water, enhance the water pushing effect, increase the water exchange amount, increase the dissolved oxygen level, reduce the water body pollution, improve the feed utilization rate, and promote rapid growth of fish.

Description

Technical field [0001] The invention relates to the technical field of aquaculture, in particular to a semi-industrial pond internal circulation breeding system. Background technique [0002] With the rapid development of modern fisheries in my country, due to the serious shortage of land, water resources, over-reliance on natural resources, and lack of protection of natural resources faced by traditional pond aquaculture in China, it has begun to restrict the sustainable development of my country's aquaculture industry. In addition, aquaculture diseases frequently occur, causing large economic losses; infrastructure engineering facilities are weak, and the degree of intensification needs to be improved; efficiency improvement is weak; aquatic product quality and safety and the ecological safety of aquaculture waters have been fully highlighted. In the process of industrialization of fishery aquaculture, the construction of closed industrial recirculating aquaculture system is sl...

AI Technical Summary

Problems solved by technology

[0008] 1. The dissolved oxygen content in the influent water is low, the water pushing effect is not good, and the water exchange volume is small;

[0009] 2. The dissolved oxygen level of high-density culture in the culture unit is low, resulting in low efficiency of oxygenation in the culture unit during the peak breeding period;

[0010] 3. Feeds for aquaculture are scattered and easily float out of the feeding area, resulting in waste of feed; aquaculture waste is easy to deposit and form stagnant water areas, which will damage the water quality, and the sewage discharge effect is poor, causing pond water pollution and affecting the normal growth of fish

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