A wet scrubber is an air pollution control device that removes harmful particles and gases from industrial exhaust. It works by passing the polluted air through a liquid, usually water or a chemical solution, which captures the contaminants. This process helps to reduce emissions and improve air quality. Wet scrubbers are commonly used in various industries, including power generation, chemical manufacturing, and waste management. They are effective in controlling pollutants like sulfur dioxide and particulate matter, making them an essential tool for meeting environmental regulations and protecting public health.