Industrial prawn culture system based on gas stripping circulation and industrial prawn culture method based on gas stripping circulation

Abstract

The invention relates to an industrial prawn culture system based on gas stripping circulation. The industrial prawn culture system based on gas stripping circulation comprises a culture pool group consisting of two pairs of prawn culture pools distributed in a matrix shape, wherein the long-strip region between the two pair of prawn culture pools is a circulating water disposal pool; the circulating water disposal pool comprises a middle gulley trap, as well as a mechanical floatation tank and a biological filter which are sequentially distributed on two sides of the middle gulley trap; the shrimp culture pools are communicated with the mechanical floatation tank; the mechanical floatation tank is communicated with the biological filter; a gas stripping tube is arranged between the biological filter and the prawn culture pools and is provided with at least two layers of optional gas stripping water outlets in upper and lower layers; when in use, the difference between the height of the gas stripping water outlets and the liquid level is less than 10cm; the top of the mechanical floatation tank is connected with a blowdown weir through the gulley trap; the center of the prawn culture pool is provided with central drainage holes; each central drainage hole is communicated with a trench through a blow-off pipe. The system is simple in process and simple in facilities, and can be used for effectively reducing the equipment investment and running cost of an industrial circulating water prawn culture system, reducing the water circulation energy consumption and improving the survival rate of prawn culture.

Description

technical field [0001] The invention relates to an industrialized prawn farming system and method based on an air lift cycle, and belongs to the technical field of industrialized prawn farming. Background technique [0002] Shrimp farming is one of the pillars of China's aquaculture industry. For a long time, China's shrimp farming output has been maintained at more than 1 million tons, ranking first in the world. The main production mode of shrimp farming in China is pond farming, which is traditionally extensive, pollutes the farming waters, destroys the farming ecological environment, and is increasingly threatened by the polluted environment. In recent years, the large-scale outbreak of shrimp hepatopancreatic necrosis and other diseases has led to a decline in the success rate of shrimp farming in ponds year by year. The overall success rate of some major farming areas has been lower than 10%. The farmers have suffered heavy losses, which has greatly hindered shrimp fa...

AI Technical Summary

Problems solved by technology

The application of industrial recirculating aquaculture in fish farming has been relatively mature, but the biological characteristics of shrimp and fish are quite different. Shrimp has the characteristics of killing each other and it is difficult to use the upper water body. The breeding density is much lower than that of fish, and the purification equipment is complicated. The cost of shrimp farming in the fish farming industrial circulating water system is too high, and there are generally algae in the shrimp farming system, and the efficiency of biological filtration will be greatly reduced. Therefore, from the perspective of system economy, the existing industrial fish farming water circulation system Not suitable for farmed prawns

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