Which system is focused on capturing and removing pollutants from the air?

The source capture system is specifically designed to capture and remove pollutants directly at the source before they can disperse into the surrounding environment. This is essential in workplaces where harmful emissions, such as smoke, fumes, or dust, are generated. By positioning capture hoods or other types of collection devices close to the source of contamination, the system effectively minimizes the exposure of workers to these harmful substances, contributing to maintaining a safer and healthier indoor air quality.

In contrast, other systems serve different purposes. The draft air system primarily focuses on managing air flow rather than pollutant capture. The mechanical ventilation system aims to maintain fresh air circulation throughout a building but does not necessarily target pollutants at their source. The filtered air supply system may provide clean air but typically processes this air from a central location, which means it may not be as effective in addressing contamination as it occurs.

Given this context, a source capture system is the most focused and effective approach for directly removing pollutants from the air at their origin.