Wastewater New York State Practice Exam

Which of the following can indicate an operational issue within a treatment plant process?

1. Stable flow rates

2. Increased TSS levels

3. Consistent temperature readings

4. Normal pressurization

The correct answer is: Increased TSS levels

Increased total suspended solids (TSS) levels in a treatment plant can be a significant indicator of operational issues within the treatment process. TSS represents the solid particles suspended in water, and higher levels can suggest several potential problems, including inadequate sedimentation, improper coagulation, or issues with filtration. When TSS levels rise, it often points to a failure in the treatment process, as effective wastewater treatment should generally result in lower suspended solids. This increase may lead to further complications, such as decreased effluent quality, increased treatment costs, and potential violations of discharge permits. Addressing elevated TSS levels promptly is crucial for maintaining the efficiency and effectiveness of the wastewater treatment process, making it a key indicator to monitor for operational issues. In contrast, stable flow rates, consistent temperature readings, and normal pressurization typically suggest that the treatment plant is operating under expected conditions, which may not indicate any underlying problems. Therefore, observing an increase in TSS levels is a critical red flag that warrants investigation into the processes involved in wastewater treatment.