What mechanical equipment would best improve aeration in a wastewater treatment plant?

To improve aeration in a wastewater treatment plant, a blower is the most effective mechanical equipment option. Blowers are specifically designed to introduce air into the wastewater, which is crucial for the aerobic biological processes that digest organic material in the wastewater. By increasing the availability of oxygen in the treatment system, blowers enhance the efficiency of microbial activity, thereby promoting the breakdown of pollutants and improving overall treatment performance.

In contrast, a clarifier is primarily used for settling suspended solids and separating them from the treated water, while gravity separators are used to remove heavier solids or oils from the wastewater. A compressor, although capable of increasing air pressure, is not specifically designed for the purpose of aeration in wastewater treatment. Therefore, the blower is the optimal choice for effectively improving aeration in the treatment process.