California Wastewater Treatment Operator Practice Exam

What does the term “disinfection byproducts” (DBPs) refer to?

1. Elements used to disinfect wastewater

2. Compounds formed when disinfectants react with organic matter

3. Byproducts of biodegradable waste treatment

4. Materials that promote algal blooms

The correct answer is: Compounds formed when disinfectants react with organic matter

The term “disinfection byproducts” (DBPs) specifically refers to the compounds that are formed when chemical disinfectants, such as chlorine or chloramines, react with organic matter present in the water being treated. This reaction can create various unintended chemicals, some of which may have health implications. Understanding DBPs is crucial for wastewater treatment operators, as they need to manage the levels to ensure compliance with health regulations and to minimize any potential risks associated with these byproducts. In the context of wastewater treatment, controlling the formation of DBPs is important for maintaining water quality, and operators must be aware of the conditions that contribute to their formation, including the concentration of disinfectants, the presence of organic materials, and the reaction conditions. This knowledge helps in selecting appropriate disinfection strategies that minimize harmful byproducts while effectively disinfecting the wastewater.