A kind of pH flowing water control system and method

Abstract

The present invention proposes a pH flowing water control system, including: a pure CO2 tank, an acidified stock solution pool, a controller, a pH sensor, a metering pump, a premixing pool, a high buffer pool, an experimental pool, and a flow meter, a flow control bottle, Water level control tube; the acidification stock solution pool is filled with pure CO2 as a source of seawater; the controller sets the target pH value of each premixed pool, and the pH sensor in each premixed pool outputs an electrical signal to the controller, and the controller outputs an electrical signal after identification The signal is sent to the metering pump, which drives the metering pump to pump a certain amount of seawater from the acidification stock solution pool to the premixing pool. The mixing tank is connected to the running water source, and the seawater in the pre-mixing tank is pumped into the high-level buffer tank by the air pump for further mixing, and is diverted to the corresponding experimental tank by gravity. The experimental tank is equipped with a flow meter to control the water flow.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a pH flowing water control system, and also to a pH flowing water control method. Background technique [0002] Climate warming and ocean acidification are CO 2 Two global ecological problems caused by excessive emissions, some studies predict that climate warming will exacerbate the negative effects of ocean acidification. Under the pressure of continuous high-concentration CO2 emissions, the marine ecological effects that may be caused by global climate change have attracted great attention from government organizations and researchers at home and abroad, among which ocean acidification has always been an international research hotspot. [0003] Studies have shown that the continuously acidified seawater will break the dissolution balance of calcium carbonate in seawater, and calcium carbonate is an important substance in the bones and shells of marine organisms. The ability ...

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Problems solved by technology

[0007] However, the fatal shortcoming of this type of experiment is that, since the metabolic activities of the experimental organisms will affect and change the pH of the water body, the pH of the water body usually changes greatly before and after the closed system experiment. It is very imprecise to analyze the scientific issues reflected by the experimental data obtained under different pH gradients by using the pH average

[0008] In addition, the use of short-term experimental results to analyze the impact of ocean acidification on experimental organisms is too convincing. Therefore, the credibility of the research results obtained from such experiments and the reference significance for ocean acidification research are very limited

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