Recirculating aquaculture process suitable for larimichthys crocea

Abstract

The invention relates to a recirculating aquaculture process suitable for larimichthys crocea. The process comprises the following steps: 1, killing parasites in the waste water where fish is cultured; 2, filtering suspended solids, colloids and large impurities in the water treated in the step 1; 3, pumping the water treated in the step 2 to a settling pond to settle; 4, pumping the water at the upper part of the settling pond to a protein separator, and separating protein substances or organic matters in the water; 5, further filtering residues in the water treated in the step 4 biologically, and carrying out nitration; 6, aerating the water treated in the step 5, and nitrating the residues; 7, sterilizing the water filtered in the step 6, and pumping the water to each culture pond. According to the process, the consumption of water resources is low, the spaced occupied and the environmental pollution are small, a product is high in quality and density and is safe, the utilization ratio of resources is high, the parasites in the recirculating water are killed, and the difficult problem in the prior art that the larimichthys crocea cannot be cultured in the recirculating water is solved.

Description

technical field [0001] The invention relates to the field of aquatic product cultivation, in particular to a circulating aquaculture process 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 reci...

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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 process suitable for large yellow croaker. This process 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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