Field PH (potential of hydrogen) flowing water control system and method

Abstract

The present invention belongs to the test technical field and relates to a field PH (potential of hydrogen) flowing water control system and method. The system comprises a flat platform, shunting pipes and a plurality of encircling nets; the flat platform comprises a CO2 tank, an air tank, automatic flow control devices, a buffer bottle, a metering pump and a PH transmitter, wherein the CO2 tank and the air tank are communicated with the buffer bottle through the automatic flow control devices; three double-layer experimental pools are arranged in each of the encircling nets; experimental living things and air stone are located at the upper layer and lower layer of each double-layer experimental pool respectively; the buffer bottle is communicated with the air stone through the metering pump and the shunting pipes; PH sensors area arranged in the encircling nets; and the PH sensors are connected with the metering pump through the PH transmitter. With the field PH flowing water control system and method adopted, stable long-term operation of PH in a field flowing water condition can be realized, and a reliable hardware guarantee can be provided for the research of the response of marine living things under a long-term ocean acidification condition, and obtained experimental results 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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