California Wastewater Treatment Operator Practice Exam

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Prepare for the California Wastewater Treatment Operator Exam. Gain knowledge through multiple-choice questions and flashcards. Understand key concepts and regulations essential for wastewater treatment operations in California.

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What type of process is the activated sludge system?

  1. Anaerobic

  2. Aerobic

  3. Chemical

  4. Physical

The correct answer is: Aerobic

The activated sludge system is a type of wastewater treatment process that utilizes microorganisms in the presence of oxygen to break down organic materials. This makes it an aerobic process. Option A (anaerobic) is incorrect because this type of process occurs in the absence of oxygen. Option C (chemical) may be involved in the treatment process, but it is not the main type of process used. Option D (physical) is also incorrect because the activated sludge system involves biological processes, rather than solely physical processes.

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