Which of the following is a characteristic of anaerobic digestion in wastewater treatment?

Study for the Texas Wastewater Class A Exam. Enjoy flashcards and multiple choice questions, each with hints and explanations. Prepare effectively for your exam!

Anaerobic digestion is a biological process used in wastewater treatment that occurs in the absence of oxygen. This process is primarily aimed at breaking down organic matter. One of the key characteristics of anaerobic digestion is its ability to produce methane gas as a byproduct. This methane can be captured and utilized as a renewable energy source, contributing to the overall sustainability and efficiency of wastewater treatment systems.

In anaerobic conditions, microorganisms metabolize organic materials and generate methane, along with carbon dioxide and other trace gases. This biogas production is beneficial, as it can be harnessed for energy, providing a potential source of power or heat for the treatment facility or even for use in local energy systems.

Other options, such as the requirement for high oxygen levels, the use of ultraviolet light, and the removal of nitrogen through nitrification, do not apply to anaerobic digestion. Instead, these processes are characteristic of aerobic treatment systems or different treatment mechanisms entirely, underscoring the unique nature and benefits of anaerobic digestion in wastewater management.

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