California Wastewater Treatment Operator Practice Exam 2025 – All-in-One Guide to Master Your Certification

The primary goal of process control in wastewater treatment is to maintain optimal conditions for biological treatment. This is crucial because the biological processes used in treatment rely on specific environmental factors, such as temperature, pH, dissolved oxygen, and nutrient levels, to function effectively. By ensuring that these conditions are optimal, the treatment processes are more efficient, leading to better breakdown of organic matter and reduction of harmful pollutants in the wastewater.

Maintaining these conditions is vital for the health and activity of the microorganisms that are responsible for the biological treatment processes. If conditions deviate from the ideal range, the efficiency of biological treatment can decrease, potentially resulting in insufficient treatment outcomes and regulatory compliance issues. Hence, process control plays a key role in ensuring that the treatment plant operates efficiently and effectively, ensuring the treated water meets quality standards for discharge or reuse.