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Precise automatic control system of dissolved oxygen in aquaculture pond and control method thereof

An automatic control system, aquaculture technology, applied in control/regulation systems, non-electric variable control, simultaneous control of multiple variables, etc., can solve the problems of difficult to achieve precise control, untimely collection, lack of dissolved oxygen data, etc. The effect of easy management, saving investment and operating costs, and effectively regulating water quality

Inactive Publication Date: 2019-02-19
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to overcome the problems of lack of dissolved oxygen data, untimely collection and difficulty in realizing precise control in the existing aquaculture process, the present invention provides a precise automatic control system and control method for dissolved oxygen in aquaculture ponds

Method used

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  • Precise automatic control system of dissolved oxygen in aquaculture pond and control method thereof
  • Precise automatic control system of dissolved oxygen in aquaculture pond and control method thereof
  • Precise automatic control system of dissolved oxygen in aquaculture pond and control method thereof

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Embodiment 1

[0053] The aquaculture pond 1 of this embodiment has a water surface area of ​​about 22 mu, a length of about 266m, a width of about 55m, a depth of about 2.0m, and a water volume of about 29260m 3 ;Through the surrounding natural water body 2 drains, the drainage is smooth and the water replenishment is convenient. Water supply 4-1 The water volume accounts for about 5% to 9% of the water volume in the aquaculture pond 1, which is about 1463 to 2633.4m 3 .

[0054] A precise automatic control system for dissolved oxygen in an aquaculture pond, comprising four parts: aquaculture pond 1, natural water body 2, control system 3, and water circulation system 4. The control system 3 includes an online flow meter 3-1, an online DO analyzer 3-2, an online COD analyzer 3-3, an online ammonia nitrogen analyzer 3-4, a controller 3-5, an aerator 3-6, and a power of 1.5 kW; increase the dissolved oxygen in the water body through aeration, promote pond water convection, oxidation and tox...

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Abstract

The invention discloses a precise automatic control system of dissolved oxygen in an aquaculture pond and a control method thereof. According to the aquaculture characteristics and the dissolved oxygen change rule, an aquaculture pond, a natural water body, a control system and a water circulation system are designed. Through on-line measurement of water dissolved oxygen and the water discharge amount, the oxygen filling amount of an aerator can be accurately controlled to avoid water oxygen deficit caused by insufficient oxygen supply and cost waste caused by excess oxygen supply. The systemand the method have the outstanding advantages that the real-time on-line measurement and accurate control over dissolved oxygen are achieved, the water quality of the aquaculture pond is effectivelyadjusted, and the aquaculture yield and quality are improved. The investment is low, the operation cost is low, the process is simple to operate, the treatment effect is good, and the ecological environment benefits are good.

Description

technical field [0001] The invention belongs to the fields of environmental protection and water body restoration, and in particular relates to a precise automatic control system for dissolved oxygen in aquaculture ponds and a control method thereof. Background technique [0002] The total amount of aquaculture in my country has ranked first in the world. In the process of aquaculture, the quality of water plays a decisive role in the quality and quantity of aquatic products. Especially the dissolved oxygen concentration in aquaculture ponds, dissolved oxygen can oxidize harmful organic matter, nitrify ammonia nitrogen, stir and other functions. However, in the actual breeding process, due to the lack of dissolved oxygen and pollution measurement data, insufficient control system, blind aeration or delayed aeration, and extensive management, seriously affect the product yield and quality. And the discharged sewage pollutes the surrounding water bodies, posing a serious thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K63/04G05D27/02
CPCA01K63/042G05D27/02
Inventor 沈晓笑邵孝侯
Owner HOHAI UNIV
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