Recirculating aquaculture system in intensive pond

Abstract

The invention discloses a recirculating aquaculture system in an intensive pond. The system comprises the pond, wherein the pond is sequentially divided into a high-density aquiculture area, a solid particle purification area and a water quality purification area along the clockwise direction of the pond; the water surface area of the high-density aquiculture area accounts for 5% of the water surface area of the whole pond; the water surface area of the solid particle purification area accounts for 20% of the water surface area of the whole pond; the water surface area of the water quality purification area accounts for 75% of the water surface area of the whole pond; and the water quality purification area is mainly used for deeply purifying a relatively clean water body at the upper partof the aquaculture pond and a water body purified by the solid particle purification area. According to the system, sewage collection efficiency is high, fishes are not easily scratched, excrement and residual bait can be effectively consumed, the water purification efficiency is high; and as no need of arranging an excrement tank at a ridge side of the pond, energy saving and environment-friendliness are achieved, economic output is high, the effect of the nutrition level of an aquatic animal food chain is achieved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to an intensive pond circulating aquaculture system. Background technique [0002] Pond farming is still the most important farming method in the world's aquaculture industry. However, due to its closed and single structure, it leads to waste of water resources, relatively single cultured species, increasing ecological pressure, high energy consumption, and labor costs. high cost issues. [0003] In order to overcome the shortcomings brought about by traditional pond farming, the developer has designed a racetrack farming module. The pond racetrack farming model has developed rapidly in Jiangsu, Zhejiang, Anhui, Guangdong, Shandong and other places in China in recent years. The fish cultured in the original ponds are concentrated in the rectangular flow tank for high-density cultivation. The air lift push flow device is used at the water inlet to push the water body into the fl...

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Problems solved by technology

[0002] Pond farming is still the most important farming method in the world's aquaculture industry. However, due to its closed and single structure, it leads to waste of water resources, relatively single cultured species, increasing ecological pressure, high energy consumption, and labor costs. high cost

[0003] In order to overcome the shortcomings brought about by traditional pond farming, the developer has designed a racetrack farming module. The pond racetrack farming model has developed rapidly in Jiangsu, Zhejiang, Anhui, Guangdong, Shandong and other places in China in recent years. The fish cultured in the original ponds are concentrated in the rectangular flow tank for high-density cultivation. The air lift push flow device is used at the water inlet to push the water body into the flow tank, flow through the breeding area, and flow out from the terminal sewage collection area. , the remaining feed and feces of aquaculture animals are taken away by the water flow and collected to the terminal sewage collection area, and removed by the sewage suction device. low, which in turn causes fish feces to be unable to be discharged from the pool in time, and then circulates back into the water body, which has brought serious pollution to the aquaculture water body; another, although the purification area accounts for more than 95% of the entire water surface, there are the following problems : (1) Low sewage collection efficiency: The feces and residual bait in the runway breeding pond are broken by turbulent water and fish, suspended in the water, and difficult to settle. Although there is a sewage collection system, the feces collection efficiency is only 100% The collection efficiency is low; (2) the fish are not evenly distributed in the entire runway pool, and most of the fish are concentrated at the water inlet, causing easy scratches; (3) due to the large amount of feces that cannot be collected effectively (4) The pool structure in the purification area is simple, and the purification efficiency in the purification area is very low. Simply relying on the purification of silver carp and bighead carp and the adsorption of aquatic plants cannot effectively eliminate the pollution in the water body. (5) The collected manure is difficult to deal with later, and a manure pool needs to be set up beside the pond ridge, which needs to be cleaned regularly, and it is easy to be corrupted and smelly in summer and autumn, which affects the environment; (6) The economic output of the purification area is low and cannot be used The role of trophic levels in aquatic animal food chains

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