Tennessee Wastewater Operator Practice Exam

What is an advantage that synthetic media trickling filters have over rock media trickling filters?

1. Cost efficiency

2. Greater void spaces

3. Decreased maintenance requirements

4. Longer lifespan

The correct answer is: Greater void spaces

Synthetic media trickling filters possess several advantages over rock media trickling filters, one of which is the presence of greater void spaces within the synthetic materials. These increased void spaces allow for enhanced air and wastewater flow, which can improve the contact between the wastewater and the microbial film on the media. This better flow dynamics can lead to more efficient biological treatment processes, as microorganisms have more access to nutrients and oxygen necessary for effective degradation of organic materials. Additionally, while some other advantages might be present in other contexts, such as maintenance or lifespan, the notable improvement in void space directly contributes to operational efficiency. This structural difference in synthetic media often results in a more effective treatment process, which is critical in the field of wastewater management.