Water body total dissolved gas supersaturation generation and device for studying influence thereof on fish

Abstract

The invention relates to a controllable temperature water body total dissolved gas supersaturation generation and an experimental device for studying the influence thereof on fish. The device comprises an autoclave, an air inlet, an adjusting air valve, a safe air valve, an air gauge, a water inlet, a water outlet, a water pool provided with a temperature controller, a water pump, a first ball valve, a first flowmeter and a water inlet, wherein, the autoclave, the air inlet, the adjusting air valve, the safe air valve, the air gauge, the water inlet and the water outlet are arranged on the autoclave, and the water pump, the first ball valve, the first flowmeter and the water inlet are sequentially connected with the water pool; an air compressor is connected with the air inlet; the water outlet is sequentially connected with a second ball valve, a second flowmeter and a water channel; a total dissolved gas tester and a water quality monitor are arranged outside the water channel; and the water channel is communicated with the water pool via a latex tube. The invention generates water body featuring total dissolved gas supersaturation by autoclave sealing pressurization, and the whole device adopts circulating water and controls water temperature thereof to be constant. The invention can realize the control on measurement of major physical parameters, such as water temperature,water body pressure, airation content, flow and the like, which affects total dissolved gas supersaturation generation so as to quantificationally analyze the generation principle of total dissolved gas supersaturation and study the influence thereof on fish.

Description

technical field [0001] The present invention relates to a technology for generating supersaturation of total dissolved gases in water bodies, in particular to a temperature-controllable technology that can be used to simulate the generation of supersaturation of total dissolved gases in downstream water bodies caused by water discharge from high dams, and to study its impact on fish An experimental device belongs to the technical field of the influence of water conservancy projects on the ecological environment. Background technique [0002] Many large-scale water conservancy projects, due to their comprehensive functions of regulating runoff, flood control and power generation, need to discharge water to downstream rivers through spillways, flood tunnels and other discharge structures according to the demand for water scheduling. A large number of data show that the discharge of high dams makes the dissolved gases in the downstream water such as O 2 , N 2 and CO 2 When t...

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Problems solved by technology

The above methods of generating TDG supersaturation either cannot control the temperature of the water body to be constant, or cannot simultaneously generate different concentrations of TDG saturation and make the TDG saturation stable, or the experimental device is too complicated and difficult to operate, etc., there are many limitations.

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