Mountainous area cold water fish semi-circulating water culture system with self-cleaning function and utilization method

Abstract

The invention belongs to the field of cold water fish culture, and relates to a mountainous area cold water fish semi-circulating water culture system with a self-cleaning function and a utilization method. The mountainous area cold water fish semi-circulating water culture system comprises a cold water fish culture pond, a water body ecological purification pond, a nanotube air lift water circulation device, a composite water purification device, an ecological floating bed and a water baffle, a separation wall is arranged between the cold water fish culture pond and the ecological purification pond, pond tails are communicated, and the mountainous area cold water fish semi-circulating water culture system comprises a water inlet located in the culture pond and a water outlet located in the water body ecological purification pond. The composite water purification device comprising a hydroponic planting plate and a biochemical brush is erected in the ecological purification pond and is matched with the ecological floating bed, and pollutants in the water body are decomposed and absorbed by culturing low-temperature-resistant microorganisms and planting low-temperature-resistant aquatic plants, so that water body ecological purification is realized. The nanotube air lift water circulation device efficiently oxygenates the ecologically purified water body and then pushes the water body into the cold water fish culture pond, and semi-cyclic utilization of the water body is achieved. Meanwhile, the water outlet of the ecological purification pond is provided with a drainage device capable of adjusting the drainage amount, the drainage amount of the water body after ecological purification is increased in the wet season, the drainage amount is reduced in the dry season, the air lift water circulation amount is increased, so that the problems of insufficient water amount and dissolved oxygen in the dry season are solved, and standard discharge of cold water fish culture tail water can be realized, so that the green development of the cold water fish culture industry is promoted.

Description

technical field [0001] The invention belongs to the field of cold-water fish cultivation, and in particular relates to a semi-circulating aquaculture system and utilization method for mountainous cold-water fish with self-purification function. Background technique [0002] Cold water fish, such as sturgeon and rainbow trout, are important famous and high-quality fish breeding species in my country. They are widely consumed because of their high protein content, delicious meat, no intermuscular spines, and rich in high unsaturated fatty acids (EPA and DHA). Those who like it. At present, cold-water fish in my country are mainly cultured in cold-flowing water in mountainous areas, that is, water is diverted from natural rivers to aquaculture ponds, and the aquaculture water is directly discharged into natural water bodies after passing through the aquaculture ponds, which poses a huge threat to the water environment. [0003] In February 2019, the Ministry of Agriculture and ...

AI Technical Summary

Problems solved by technology

Compared with traditional non-cold water and non-flowing water aquaculture ponds, the water purification of cold-water fish flowing water aquaculture ponds is more technically difficult. Due to the faster water flow in mountainous areas, the water body stays in the aquaculture pond for a shorter time, and the temperature is lower. , many existing technologies are difficult to effectively apply

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