Layered high-density demersal breeding fish pond

Abstract

The invention relates to a layered high-density demersal breeding fish pond. The layered high-density demersal breeding fish pond is that at least one inhabiting layer structure is arranged in the center of the bottom surface of the fish pond; the inhabiting layer structures are overlapped, each comprising an inclination support for supporting a horizontal circular porous separating plate; the aperture of the porous separating plate is more than the maximum diameter of particle feed; the porous separating plate is provided with at least one fish passing hole through which fish can cross the upper layer and the lower layer to move; a water feeding pipe is vertically arranged in the center of the fish pond and horizontally communicated with horizontal water distributing pipes; each inhabiting structure is corresponding to at least four water distributing pipes; the bottom structure of the fish pond is high in middle, low in four sides, and about 3 to 5 degrees in gradient; a circle of downwards-concave sewage collecting tanks is formed in the bottom part of the wall of the fish pond; a plurality of sewage draining pipes are arranged below the sewage collecting tanks; a water returning pipe is arranged on the sidewall of the fish pond; a circulating water pump is arranged between the water returning pipe and the water feeding pipe to provide water circulating power. According to the layered high-density demersal breeding fish pond, water is treated by physical filtering, biological filtering, oxygen increase, sterilizing and other purifying links and then is recycled, so that breeding with circulating water can be achieved.

Description

technical field [0001] The invention relates to a fish pond, in particular to a layered high-density benthic culture fish pond, which belongs to the technical field of fish ponds. Background technique [0002] As a habitat for fish farming, fishponds have the following functions in industrialized closed circulation aquaculture: timely removal of residual bait, manure and other organic matters such as sewage collection and sewage discharge; timely discharge of water with low dissolved oxygen content or timely oxygenation; timely removal of high Water bodies with carbon dioxide and high ammonia nitrogen content are discharged to relevant water treatment equipment or removed in time; it is convenient for grading, fishing, feeding and other operations. [0003] According to fish behavior, fish can be mainly divided into swimming fish and benthic fish. The former likes running water, while the latter likes still water or low-speed flowing water. Industrialized high-density recir...

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Problems solved by technology

[0005] The technical problems to be solved by the present invention are: in the existing benthic fish ponds, the fish dormant living area overlaps with the sewage discharge area, the sewage discharge of residual bait and feces is difficult, the fish living environment has a lot of sewage, and the dissolved oxygen is low; The stagnant area of ​​the water flow is large, and the dissolved oxygen and metabolic capacity are not good; the oxygen concentration around the fish is always lower than the oxygen concentration of the discharged water, resulting in a serious waste of dissolved oxygen in the water body and an increase in the amount of circulating water exchange

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