Inner-pond circulating aquaculture method capable of regulating dissolved oxygen of aquaculture water body

A technology for breeding water bodies and internal circulation, applied in fish farming, non-electric variable control, control/regulation systems, etc., can solve problems such as reduced bait utilization, increased energy consumption, unreasonable pushing of water and oxygenation, etc., to achieve disease The effect of reducing the probability of occurrence, increasing the feeding rate, reducing the energy consumption of equipment operation and breeding cost

Inactive Publication Date: 2019-05-28
ZHEJIANG INST OF FRESH WATER FISHERIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical application, it is found that there are still many problems in the circulating water culture mode in the pond, mainly as follows: 1) Due to the high density of fish culture in the tank, if the regulation of dissolved oxygen in the water body is only to use the original equipment to push water to increase oxygen It is difficult to ensure the dissolved oxygen content of the water body at night, which not only hinders the metabolism of the fish body and reduces the utilization rate of bait, but also increases the content of ammonia nitrogen and nitrite nitrogen in the water body, which affects the water body to a certain extent. 2) Unreasonable water pushing and oxygenation not only greatly increases energy consumption, but also the greater the amount of pushing water within a certain period of time, the easier it is to cause the water in the tank to be hypoxic

Method used

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  • Inner-pond circulating aquaculture method capable of regulating dissolved oxygen of aquaculture water body
  • Inner-pond circulating aquaculture method capable of regulating dissolved oxygen of aquaculture water body
  • Inner-pond circulating aquaculture method capable of regulating dissolved oxygen of aquaculture water body

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Experimental program
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Effect test

Embodiment 1

[0048] like Figure 1-5 As shown in the figure, a method for regulating and controlling dissolved oxygen in a water body of aquaculture in circulating flowing water in a pond is characterized in that: comprising:

[0049] Water pusher, used for aeration in the daytime aquaculture pond;

[0050] Bottom aeration equipment, used for aeration in the breeding tank at night / early morning;

[0051] Pure oxygen equipment, used to increase oxygen in the breeding tank in the early morning;

[0052] The flow meter is set between the breeding pond and the water pusher, bottom aeration equipment, and pure oxygen equipment, and is used for real-time feedback of the oxygen output flow;

[0053] The data acquisition module is used to collect the data of the oxygen output flow, start and stop time, and dissolved oxygen content in the breeding pond and purification area of ​​the water pusher, bottom aeration equipment, pure oxygen equipment;

[0054] The computer is connected with the water ...

Embodiment 2

[0067] A method for regulating and controlling dissolved oxygen in circulating water culture water in a pond, the steps are as follows:

[0068] S1: The dissolved oxygen curve is established in the computer;

[0069] S2: Control the water pusher to perform daytime oxygenation work from 6:00-18:00;

[0070] S3: Control the bottom oxygenation equipment to perform nighttime oxygenation at 18:00-3:00;

[0071] S4: Control the pure oxygen equipment and bottom oxygenation equipment to perform early morning oxygenation work from 3:00 to 6:00;

[0072] S5: When feeding feed during the day or night: control the water pusher to halve the water pushing speed and turn off the water pusher in the middle of the breeding pond. At the same time, turn on 50% bottom oxygenation, and restore the initial state of the equipment 60 minutes after feeding is completed. Feeding time is 25-35min;

[0073] S6: The impeller type aerator in the purification area is added at 11:00-15:00 to ensure the ex...

Embodiment 3

[0077] Contrast test: in this example, take largemouth bass culture as the goal:

[0078] Test group 1: Determine the change of dissolved oxygen in the water body of traditional pond cultured largemouth bass, specifically as follows Image 6 shown. from Image 6 The average value of dissolved oxygen in the surface layer of traditional pond culture water is 5.46±1.88mg / L, the highest value appears at 15:00 in the afternoon (9.24mg / L), and the lowest value appears at 6:00 in the morning (3.69mg / L). , mainly related to algal photosynthesis, respiration and oxygen-consuming decomposition of organic matter in the water body; while the average value of dissolved oxygen in the bottom water body is only 4.26±0.24mg / L, and the highest value appears at 12:00 pm (4.63mg / L), The lowest occurs at 0:00 in the morning (0.24mg / L). It is worth noting that the dissolved oxygen in the surface layer and bottom layer of traditional pond culture water is quite different at 12:00 and 15:00, althou...

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Abstract

The invention discloses an inner-pond circulating aquaculture method capable of regulating dissolved oxygen of the aquaculture water body. The method comprises the steps of S1, building a dissolved oxygen change curve in a computer; S2, controlling a water pushing machine to conduct daytime oxygenation work at 6:00-18:00; S3, controlling bottom oxygenation equipment to conduct nighttime oxygenation work at 18:00-3:00; S4, controlling pure oxygen equipment and the bottom oxygenation equipment to conduct morning oxygenation work at 3:00-6:00; S5, regulating the dissolved oxygen of the aquaculture water body through the computer. The invention further discloses an inner-pond circulating aquaculture system capable of regulating the dissolved oxygen of the aquaculture water body. According to the method, by precisely regulating the dissolved oxygen of the aquaculture water body, it is achieved that the dissolved oxygen of the aquaculture water body is at 5 mg/L or above for 24 h every day,the aquaculture environment is improved, and the aquaculture cost and equipment energy consumption are lowered.

Description

technical field [0001] The invention belongs to the technical field of pond culture, and in particular relates to a method and a system for regulating and controlling dissolved oxygen in a water body in circulating water culture in a pond. Background technique [0002] Inner-pond circulating aquaculture (IPA), commonly known as runway aquaculture, has become one of the important aquaculture models for the transformation and development of green fisheries in Zhejiang. According to incomplete statistics, as of June 2018, the province has built runways. There are 452, and 157 are under construction. Its main technical principle is to establish two functional areas of aquaculture concentration area (flow trough) and water purification area (raise filter-feeding fish, shrimp, shellfish or plant aquatic plants) through engineering transformation of aquaculture ponds. , aeration equipment and sewage suction devices make the pond aquaculture water flow and remove a large number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02A01K63/04
Inventor 原居林倪蒙练青平
Owner ZHEJIANG INST OF FRESH WATER FISHERIES
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