What type of waste disposal method involves releasing waste into a sewage system?

The correct approach for waste disposal that involves releasing waste into a sewage system is through discharge in a sanitary sewage or septic tank. This method permits the safe handling of liquid waste, often from healthcare facilities, by ensuring it is processed through a municipal sewage system or an on-site septic system, where it can be treated and disposed of properly.

This method is effective because it utilizes existing infrastructure designed for the safe disposal and treatment of waste, minimizing the potential for environmental contamination. Through this process, harmful pathogens and contaminants are neutralized and broken down, making it a viable option for waste that doesn't require specialized treatment methods.

In contrast, thermal inactivation, chemical disinfection, and steam sterilization refer to other waste management practices that deal with the destruction or inactivation of microorganisms but do not specifically involve the disposal into a sewage system. Each of these methods has its own appropriate applications depending on the type of waste and the required treatment. However, they do not facilitate direct disposal into municipal sewage systems as part of their processes.