Which system has a holding tank that can hold more than 2000 gallons?

The correct answer is the comminutor. In wastewater management, a comminutor is designed to break down large solids into smaller, more manageable pieces, which is critical in preventing clogs and ensuring the proper flow of material through the system. While comminutor configurations can vary, some are equipped with holding tanks that have substantial capacities, often exceeding 2000 gallons, allowing for the efficient processing of wastewater before it moves to subsequent treatment stages.

This function is particularly significant in settings where the volume of solids can be high, as it ensures that the solids are adequately processed and do not overwhelm downstream facilities. The comminutor plays a crucial role in optimizing the efficiency of the entire wastewater treatment process by managing the solids early in the treatment pathway.

The other options, while also integral to wastewater management systems, do not typically feature a holding tank of this capacity specific to the comminution process. For example, separators focus on the removal of grit and heavier solids rather than holding capacities, treatment plants encompass broader functionalities including processing various stages of treatment but may not specifically refer to a holding tank correlating with the operational characteristic mentioned, and pump stations primarily serve the purpose of moving wastewater rather than holding large volumes in a tank.