A field pH flow control system and method thereof

Abstract

The invention belongs to the technical field of testing, and in particular relates to a field pH running water control system and a method thereof. The system includes a flat platform, a shunt pipe and a plurality of fences, and the flat platform includes a CO2 tank, an air tank, an automatic flow control meter, a buffer bottle, a metering pump, and a pH transmitter, wherein the CO2 tank and the air tank pass through the The automatic flow control meter is connected to the buffer bottle, and each fence is equipped with three double-layer experimental pools. The upper and lower layers are respectively equipped with experimental organisms and air stones. A pH sensor is arranged in the middle of the fence, which is connected with a metering pump through a pH transmitter. The invention can realize the stable long-term operation of pH under the condition of running water in the field, and provide reliable hardware guarantee for studying the response of marine organisms under the condition of long-term ocean acidification, and the experimental results obtained thereby are more convincing.

Description

technical field [0001] The invention belongs to the technical field of testing, and in particular relates to a field pH running water control system and a method thereof. Background technique [0002] Climate warming and ocean acidification are CO 2 There are two global ecological problems caused by excessive emissions. Studies have shown that the synergistic effect of climate warming and ocean acidification has caused the negative effects of marine shellfish. in CO 2 Under the pressure of continuous high-concentration 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. Numerous researchers have shown that the ocean absorbs 30% of the CO emitted by humans 2 , which not only greatly relieves atmospheric CO 2 The trend of increasing concentration will also cause a...

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Problems solved by technology

But the very fatal disadvantage of this type of experiment is that the water body used in the laboratory and closed enclosure experiments is still water. On the one hand, the metabolic activities of the experimental organisms themselves will affect and change the pH of the water body, which leads to the pH of the water body before and after the closed system experiment. There will be very big changes, and the scientific problems reflected in the experimental results using the average pH value before and after cultivation to analyze the experimental data obtained under different pH gradients are not rigorous enough; on the other hand, laboratory and isolation experiments cannot reflect marine organisms Real living conditions ignore the impact of external factors (such as strong winds, rainfall, and tides) on the physical and chemical environment of the ocean. Therefore, the credibility of the research results obtained by this type of experiment and the reference significance for ocean acidification research are very limited.

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