Recirculating aquaculture system for large yellow croaker

Abstract

The invention relates to a recirculating aquaculture system suitable for large yellow croakers. The recirculating aquaculture system comprises one or more culture ponds and water circulation treatment devices connected with the corresponding culture ponds, wherein each water circulation treatment device comprises a water inlet pond, an ultrafiltration pond, a settling pond, a protein separator, an ozone generator, a first biological filter, a second biological filter, a biological aerated filter and an ultraviolet sterilization pond, the ozone generator communicates with the bottom of the water inlet pond and the protein separator, water separated through the protein separator passes through the first biological filter, the second biological filter and the biological aerated filter sequentially through pipelines for probiotics treatment, is filtered and is sterilized through the ultraviolet sterilization pond, and the ultraviolet sterilization pond pumps the treated water to the culture ponds through pipelines. The system is low in water resource consumption, occupies a small area and causes little environmental pollution, products are high-quality and safe, the density and the resource utilization rate are high, besides, parasites in circulating water can be killed, and the problem that the large yellow croakers cannot be cultured in the circulating water in the prior art is solved.

Description

technical field [0001] The invention relates to the field of aquaculture systems, in particular to a circulating aquaculture system suitable for large yellow croakers. Background technique [0002] Large yellow croaker is one of the four traditional seafoods and is the main economic fish in my country's coastal waters. The large yellow croaker has good meat quality and delicious taste, and "squirrel yellow croaker" is a delicacy for banquets. Most of them are sold fresh, others are salted into "melon croaker", washed and dried in the sun to make "yellow croaker" or canned. Swim bladder can be dried to make famous and precious food "fish maw" and "yellow fish glue". The liver of large yellow croaker contains vitamin A, which is a good raw material for making cod liver oil, and otoliths can be used for medicine. [0003] Large yellow croaker is cultured artificially. Currently, there are various farming models such as cages, purse seines and earthen ponds. The recirculating...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above disadvantages and provide a circulating aquaculture system suitable for large yellow croaker. This system not only consumes less water resources, occupies less land, has less environmental pollution, high-quality and safe products, high density, and high resource utilization. , and can kill parasites in circulating water, which solves the problem that large yellow croakers cannot be cultured in circulating water in the prior art

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