Method for experimenting dissolved oxygen saturation threshold of damaging fishes

Abstract

The invention relates to a device for experimenting dissolved gas oversaturation in high-dam leakage current, in particular to a device for experimenting a dissolved oxygen saturation threshold of damaging fishes. The device is provided with a gas supply machine and a water supply tank, wherein the water supply tank is internally provided with an electrochemical probe for providing testing of dissolved oxygen saturation and displaying dissolved oxygen saturation; the gas supply machine can be used for aerating oxygen with a certain saturation to the water supply tank through a gas supply pipeand a gas supply valve; a circular sealed water tank can be divided into a plurality of swimming channels by detachable annular baffle plates, and the cyclic utilization of water can be realized by using a cyclic variable-frequency water pump and an annular water pipe mounted on the internal wall of the circular sealed water tank. According to the invention, the device for experimenting dissolvedthe oxygen saturation threshold value of damaging different kinds and body types of fishes has the advantages of aerating oxygen in a high-pressure water tank by using the gas supply machine, increasing the dissolved oxygen saturation, combining the certification criteria of fish body damage severities and the monitored dissolved oxygen saturation, saving the man power and the financial resourcesand being high the integral utilization efficiency.

Description

technical field [0001] The invention relates to a high dam discharge dissolved gas supersaturation experimental device, in particular to a water body dissolved oxygen saturation fish damage threshold experimental device. Background technique [0002] During the discharge process of the dam, the discharge water flow is strongly turbulent, forming countless water droplets, which greatly increases the amount of oxygen entering the water body through the water-air interface, thereby significantly increasing the dissolved oxygen content in the downstream channel of the dam, which will have a negative impact on the downstream aquatic life. Biological adverse effects. [0003] Supersaturation of dissolved oxygen in water can easily cause fish to suffer from gas bubble disease, resulting in gas bubbles in the intestinal tract of fish, or many small bubbles attached to the body surface and gills, causing fish to float or swim out of balance, and in severe cases, it can cause a large ...

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Problems solved by technology

[0004] The Chinese Utility Model Patent No. 201120020517.9 discloses a "Fish Multifunctional Behavioral Device", but it belongs to the field of basic biological research. It can only study the fish's response to light intensity under the condition that the swimming ability of the fish is satisfied. , light color, water flow preference, etc., cannot be used for fish damage threshold experiments of dissolved oxygen saturation in water bodies

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