What is the general purpose of sewage treatment?

The general purpose of sewage treatment is primarily to prepare sewage for safe disposal to a receiving stream. This process involves removing harmful contaminants from the wastewater, thereby protecting public health and the environment. After treatment, the effluent can be safely released into waterways without causing pollution or harm to aquatic life.

Sewage treatment includes various processes such as screening, sedimentation, biological treatment, and disinfection, each aimed at reducing toxic substances, pathogens, and nutrients present in the sewage. By ensuring that the treated water meets regulatory standards before being discharged, sewage treatment processes help maintain the ecological balance of the receiving bodies of water.

While recycling water for reuse, generating energy from waste, and odor elimination can be benefits of some treatment systems and practices, the fundamental goal remains focused on preparing sewage for safe disposal, which is why this answer is the most accurate in reflecting the core purpose of sewage treatment.