Reform of Free Precipitation Teaching Experiment Under the Background of Carbon Neutrality

In order to actively respond to the national strategy of “carbon peaking and carbon neutralization” and implement the concept of green and low carbon in the process of experimental teaching, this paper analyzed the shortcomings of the current experimental devices and methods of free precipitation teaching. The main reform measures such as miniaturization of precipitation column, characterization of precipitation efficiency by turbidity removal rate, and calculating total precipitation efficiency with Origin software were adopted, then a free precipitation teaching experiment method with the characteristics of pollution and carbon emissions reduction was constructed. Both theoretical analysis and teaching practice showed that the experimental results can not only fully verify the basic principle of free precipitation and achieve the teaching objectives, which can enhance the cultivation of patriotism and socialist core values, thus improving the education effect.