California Wastewater Treatment Operator Practice Exam

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Study for the California Wastewater Treatment Operator Exam. Use flashcards and multiple-choice questions with detailed explanations to boost your readiness. Prepare with confidence and aim for success!

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How will algae impact the chlorine demand in the pond effluent?

  1. Decrease the chlorine demand

  2. Have no effect on chlorine demand

  3. Increase the chlorine demand

  4. Stabilize the chlorine demand

The correct answer is: Increase the chlorine demand

Algae can significantly increase the chlorine demand in pond effluent due to the presence of organic matter that requires disinfection. When chlorine is applied to wastewater containing high levels of algae, the chlorine will first react with the organic materials in the algae before it can effectively disinfect any pathogenic organisms present. This reaction consumes a larger amount of chlorine, thereby increasing the overall chlorine demand. Moreover, algae can contribute to the formation of chlorinated byproducts, which can pose additional health risks and may complicate the treatment process. Therefore, the more algae present, the greater the amount of chlorine required for effective disinfection, leading to an increase in chlorine demand.

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