What is the primary goal of using chlorine in wastewater treatment?

The primary goal of using chlorine in wastewater treatment is to eliminate pathogens. Chlorination is a widely accepted method for disinfection, as chlorine is effective at killing a broad spectrum of harmful microorganisms, including bacteria, viruses, and protozoa. This process helps to ensure that the treated effluent does not pose a health risk when released into the environment or when reused for applications such as irrigation.

While other options pertain to important aspects of wastewater treatment—such as nutrient removal and reducing turbidity—these are not the main purpose of chlorination. Chlorine specifically targets biological contamination, making it a crucial step in safeguarding public health and reducing the incidence of waterborne diseases. Thus, the focus on disinfection through chlorine use is vital for making water safe for discharge and reuse.