What are the three types of media commonly used in contaminant control?

The correct answer is that the three types of media commonly used in contaminant control are active carbon, chemically treated carbon, and potassium permanganate. This is based on their significant roles in the air and water treatment processes.

Active carbon is well-known for its ability to adsorb a wide range of organic compounds and impurities, making it a popular choice for air and water filtration. It effectively reduces odor and removes volatile organic compounds (VOCs). Chemically treated carbon enhances the capabilities of standard activated carbon by adding reactive elements or treatments that target specific contaminants, increasing its efficiency against particular pollutants. Potassium permanganate functions as an oxidizing agent that breaks down certain contaminants, particularly in water treatment, aiding in the elimination of iron and hydrogen sulfide, along with other organic materials.

In contrast, other media mentioned in the options may not encompass the broader and more effective range of contaminant control that is needed for thorough filtration and treatment. While fiberglass, paper, and metal mesh can be used for particulate filtration, they do not deal effectively with gases or certain dissolved contaminants. Similarly, while air filters, UV lights, and chemical scrubbers play a crucial role in air and water treatment processes, they represent different categories of treatment rather than media specifically