What is the primary purpose of installing grease traps in a sewer system?

The primary purpose of installing grease traps in a sewer system is to minimize grease in the sewer system. Grease traps function by intercepting greasy waste before it enters the main sewer lines, allowing lighter substances like grease and fats to float to the top while heavier solids settle at the bottom. This is crucial for maintaining the integrity of the sewer system because excessive grease can lead to clogs and blockages, resulting in backups and overflow issues. By capturing grease and preventing it from entering the sewer, these traps help to protect both public health and the environment while extending the lifespan of the sewer infrastructure.

While some of the other options touch on relevant aspects of wastewater management, they do not capture the core function of grease traps as effectively. For instance, increasing water flow in pipes does not directly relate to the function of a grease trap, and they do not treat wastewater for reuse or specifically focus on eliminating sewage odors, which can be managed through other means. Grease traps specifically address the issue of grease accumulation within sewer lines, aligning perfectly with their intended purpose.