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 is the purpose of sludge digestion?

separate sludge into different components
transport sludge to a disposal site
reduce the volume of the sludge and stabilize the solids
increase the nutrient content of the sludge

The correct answer is: reduce the volume of the sludge and stabilize the solids

The purpose of sludge digestion is primarily to reduce the volume of the sludge and stabilize the solids. This process involves the biological decomposition of organic matter present in the sludge, which results in a significant reduction in the mass of the material. The stabilization aspect is crucial as it minimizes the potential for odors and pathogens, making the sludge safer for handling and more suitable for eventual disposal or beneficial use, such as land application. While separating sludge components, transporting sludge, and increasing nutrient content may be relevant in wastewater treatment procedures, they are not the primary objectives of sludge digestion. The main goal is effectively managing sludge to lower its volume and stabilize it.