A heartwarming video recently went viral, showcasing a fascinating sight in the streets of southwestern China. Viewers were treated to a mesmerizing display that appeared to feature a truck creating rainbows as it moved through the city of Chengdu. But what seemed like magic was, in fact, a groundbreaking innovation in environmental technology.
A mist cannon, is a specialized vehicle designed to combat pollution and improve air quality. Originally used in construction and mining to control dust, these mist cannons have evolved to address the growing environmental challenges in urban areas.
How It Works: The Science Behind the Spectacle
AccuWeather Senior Weather Editor Jesse Ferrell likened the rainbow effect to mist particles produced by a garden hose. The mist cannon works by spraying ultra-fine water particles into the air, which then combine with dust and pollutants, effectively cleansing the atmosphere.
The mist cannon’s advanced features include nebulizing water into tiny particles, comparable in size to harmful pollutants. This innovative technology not only reduces air pollution but also creates stunning visual effects, like the rainbow observed in the video.
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“The truck works by nebulizing water into tiny particles, with diameters in microns, the same as PM2.5 and PM10, and spraying them into the air, and then they could combine with the dust and fine particles to fall to the ground,” Xu Yuexin, an engineer with the Beijing Capital Group Boom-sound Environment Science & Technology Company told China Daily.
Yuexin told China Daily the combination of the mist cannon and chemicals “have been determined effective in reducing the fine particles.”
While specific pricing details may vary, mist cannons have increasingly been used in major cities across China since 2014. These devices offer a cost-effective solution for combating pollution and promoting public health, making them a valuable asset in the fight against environmental degradation.
