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Method and device for culturing shrimps by adopting fully-closed circulating water

A circulating aquaculture and fully enclosed technology, applied in the field of aquaculture water treatment, can solve problems such as hindering the healthy development of shrimp aquaculture, frequent occurrence of diseases, and pollution of coastal waters, so as to benefit from modular replication, save land space, and reduce the cost of aquaculture. cost effect

Inactive Publication Date: 2020-05-05
TIANJIN OCEAN PAL CAROL BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overgrowth of microalgae can also inhibit the water body. How to control the content of microalgae in the culture water and prevent the overgrowth of microalgae has become a research focus
[0005] With the increase of the number of years of aquaculture production, the aquaculture area is expanding day by day, and a large amount of aquaculture water is discharged, causing the coastal waters to be polluted to varying degrees, resulting in frequent occurrence of diseases and hindering the healthy development of the shrimp aquaculture industry.

Method used

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  • Method and device for culturing shrimps by adopting fully-closed circulating water

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The density of shrimp fry in primary culture is 10,000 fish / m 3 , the culture time is 20 days; the weight of the shrimp in the first-level culture reaches 0.02-0.05 g / tail, and the shrimp is transferred to the pond;

[0039] The density of shrimp fry in secondary culture is 3000 fish / m 3 , the culture time is 22 days; the weight of the shrimp in the secondary culture reaches 1.8-2.5 grams per tail, and the shrimp is transferred to the pond;

[0040] The density of shrimp fry in the tertiary culture is 450 tails / m 3 , the breeding time is 27 days;

[0041] The type of microalgae includes Thalassiosira and / or Navicula; the initial dosage of microalgae cells in the primary culture is 500-1000 / mL;

[0042] In the three-level breeding system, each level includes four breeding ponds. The water volume in the first-level breeding pond is 80 tons, the water volume in the second-level breeding pond is 300 tons, and the water volume in the third-level breeding pond is 1920 tons...

Embodiment 2

[0050] The multi-level breeding system adopts a three-level breeding system.

[0051] The density of shrimp fry in primary culture is 6000 fish / m 3 , the culture time is 20 days; the weight of the shrimp in the first-level culture reaches 0.02-0.05 g / tail, and the shrimp is transferred to the pond;

[0052] The density of shrimp fry in secondary culture is 1500 fish / m 3 , the culture time is 20 days; the weight of the shrimp in the secondary culture reaches 1.8-2.5 grams per tail, and the shrimp is transferred to the pond;

[0053] The density of shrimp fry in the tertiary culture is 500 tails / m 3 , the breeding time is 30 days;

[0054] The species of microalgae includes Thalassiosira and / or Navicula; the initial dosage of microalgae cells in the primary culture is 800 / mL;

[0055] In the three-level culture system, each level includes four culture ponds, the water volume in the first-level culture pool is 200 tons, the water volume in the second-level culture pool is 800...

Embodiment 3

[0063] The density of shrimp fry in primary culture is 8000 fish / m 3 , the culture time is 20 days; the weight of the shrimp in the first-level culture reaches 0.02-0.05 g / tail, and the shrimp is transferred to the pond;

[0064] The density of shrimp fry in secondary culture is 1300 fish / m 3 , the culture time is 20 days; the weight of the shrimp in the secondary culture reaches 1.8-2.5 grams per tail, and the shrimp is transferred to the pond;

[0065] The density of shrimp fry in the tertiary culture is 440 fish / m 3 , the breeding time is 25 days;

[0066] The species of microalgae include Thalassiosira and / or Navicula; the initial dosage of microalgae cells in the primary culture is 60,000-80,000 / mL.

[0067] In the three-level breeding system, each level includes 6 breeding ponds. The water volume in the first-level breeding pond is 180 tons, the water volume in the second-level breeding pond is 980 tons, and the water volume in the third-level breeding pond is 3240 to...

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Abstract

The invention provides a method and device for culturing shrimps by adopting fully-closed circulating water. The method comprises the following steps of: directionally culturing microalgae and functional bacteria by adopting a multi-stage culture system, and converting edible algae and bacteria of filter-feeding aquatic organisms into animal proteins, wherein the number of algae cells is controlled to be 50,000 to 100,000 / mL, and the number of bacteria cells is controlled to be 100,000 to 1,000,000 / mL; and carrying out neutralization and sedimentation on culture water through porous mineral substances, and treating the culture water in a biofilter for recycling. The design is very standard and is favorable for modular replication, the land space is saved, and the culture efficiency is improved; in a circulating water system, the conversion path of organic wastes is fully considered, the water quality is directionally controlled through the microalgae and the functional bacteria, the efficiency of different conversion stages is coordinated, the filter-feeding aquatic organisms are introduced to utilize the bacteria and the algae in the culture water, algae proteins and bacterial proteins are converted into the animal proteins, and the culture cost is reduced to the greatest extent; and the method and device are reasonable in design, and the environment is protected on the premise of ensuring the culture benefit.

Description

technical field [0001] The invention belongs to the technical field of aquaculture water treatment, and in particular relates to a fully closed circulation method and device for aquaculture water. Background technique [0002] The success rate and survival rate of China's shrimp farming industry have been relatively poor this year. Although the farming area has continued to expand, the farming output has continued to decrease. There are many factors affecting the whole shrimp farming situation, and the farming mode becomes a key factor. [0003] In the traditional shrimp farming mode, the stocking density of shrimp seedlings is 400-600 tails / cubic, and they are always cultured at the same density for 65-90 days or even longer, and can only breed up to 3 batches throughout the year; while adopting the multi-level culture mode, Not only can it be convenient for management, but also the batches of breeding will increase throughout the year, and the benefits of breeding will in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59A01K61/54A01K63/00A01K63/04C12N1/12C12N1/20C12N1/16C02F9/14C12R1/89C12R1/38C12R1/645C12R1/07C12R1/01C02F101/16C02F103/20
CPCA01K63/003A01K63/04A01K63/042A01K61/54A01K61/59C02F1/5254C02F1/66C02F3/08C02F3/322C02F3/327C02F7/00C02F9/00C02F2001/007C02F2101/16C02F2103/20C12N1/12C12N1/16C12N1/20Y02A40/81
Inventor 王永苓何家瑞
Owner TIANJIN OCEAN PAL CAROL BIOTECH
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