What is the function of a low-pressure check valve on an anaerobic digester?

What is the function of a low-pressure check valve on an anaerobic digester?

• A. To increase gas flow
• B. To monitor pressure levels
• C. To prevent air from being drawn into the gas piping
• D. To equalize pressure between chambers

Answer: (C)

A low-pressure check valve on an anaerobic digester is essential for maintaining the integrity of the gas system. Its primary function is to prevent air from being drawn into the gas piping. This is crucial because the presence of oxygen can disrupt the anaerobic processes that take place within the digester. Anaerobic digestion relies on a specific environment, free from oxygen, to effectively break down organic matter and facilitate biogas production. When the pressure in the gas piping drops below a certain level, the check valve closes to block any potential backflow of air into the system. This safeguard helps maintain the anaerobic conditions necessary for optimal microbial activity and biogas generation, protecting the digester from contamination that could hinder its efficiency and effectiveness. The other options, while related to gas flow and pressure management, do not accurately describe the primary role of a low-pressure check valve.

A low-pressure check valve on an anaerobic digester is essential for maintaining the integrity of the gas system. Its primary function is to prevent air from being drawn into the gas piping. This is crucial because the presence of oxygen can disrupt the anaerobic processes that take place within the digester. Anaerobic digestion relies on a specific environment, free from oxygen, to effectively break down organic matter and facilitate biogas production.

When the pressure in the gas piping drops below a certain level, the check valve closes to block any potential backflow of air into the system. This safeguard helps maintain the anaerobic conditions necessary for optimal microbial activity and biogas generation, protecting the digester from contamination that could hinder its efficiency and effectiveness.

The other options, while related to gas flow and pressure management, do not accurately describe the primary role of a low-pressure check valve.