Laboratory simulation ocean acidification system

Abstract

The invention relates to a laboratory simulation ocean acidification system which is characterized by comprising an experiment culture box system, a CO2 supply system, a water supply system, a water purifying system and a water heating device. The experiment culture box system comprises at least one culture tank. The water supply system comprises a water storage tank and a water pump. The water heating device comprises a heating bar and a thermometer. The CO2 supply system comprises a CO2 bottle, a CO2 enriching device, a gas supply pipeline and an annular nano aeration pipe. The water purifying system is disposed between the experiment culture box system and the water supply system. Compared with the prior art, the laboratory simulation ocean acidification system has the advantages that the required CO2 concentration set by the CO2 enriching device during operation can be pumped into the culture tanks according to the requirements of ocean acidification experiments, water pH value is kept stable, experiment result reliability and repeatability are guaranteed, and the system is simple in manufacturing process, low in cost, low in noise, and completely suitable for being operated in a laboratory and popularized and used.

Description

technical field [0001] The invention relates to an auxiliary system for laboratory research, in particular to a research system for simulating ocean acidification. Background technique [0002] CO 2 It is one of the most important greenhouse gases produced by human activities, and humans are continuously inputting a large amount of CO into the atmosphere through the burning of fossil fuels and other activities. 2 . CO absorbed by the ocean 2 It plays an important role in mitigating global warming, but it disrupts the ocean's own chemical balance of carbonates, leading to increased acidity of seawater. This is due to the absorption of anthropogenic CO from the atmosphere by the ocean 2 The process of increasing the acidity of seawater is called ocean acidification (Ocean Acidification, OA). Compared with before the industrial revolution, the average pH value of surface seawater dropped from 8.2 at the beginning of the industrial revolution to the current 8.1. According t...

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Problems solved by technology

Among them, the real-time monitoring of pH uses a specific program to connect the computer, pH monitoring device and CO 2 The decompression valve is connected to realize the automatic adjustment of the pH value of the experimental seawater. Although this method has the advantages of full automation, manpower saving, and convenient operation, the establishment of a pH real-time monitoring system requires the design of a special program, and the experimental equipment is complicated. Therefore, its relatively high cost

while CO 2 There are two main methods of partial pressure regulation, one is to use pure CO 2 Directly pass into the seawater for cultivation, and conduct closed cultivation after reaching the required pH. This method has the advantages of simple operation, convenience, and quickness, but it cannot guarantee the stability of the pH value during the experiment.

while the other is to convert pure CO 2 After the gas and air are mixed in a certain proportion, the culture seawater is continuously fed to achieve acidification conditions. This method has the advantages of maintaining the pH value of the system unchanged and simple operation, but it needs to prepare different CO2 in advance. 2 concentration of gas, and the seawater needs to be continuously stirred during the aeration process, which will cause artificial mechanical damage to the growth and development of the cultured organisms

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