What chemical is often used for disinfection in wastewater treatment?

Chlorine is widely recognized as a primary chemical used for disinfection in wastewater treatment processes. Its effectiveness lies in its ability to kill a broad spectrum of pathogens, including bacteria, viruses, and protozoa, which are common contaminants in wastewater. Chlorine works by breaking down the cellular structures of these microorganisms, rendering them inactive and thus preventing waterborne diseases.

Additionally, chlorine’s use in disinfection is supported by its availability, cost-effectiveness, and ease of use. In many wastewater treatment facilities, chlorine is added to effluent water to ensure that it meets safety standards before being released into the environment or reused.

While other chemicals, such as hydrogen peroxide, can also serve as disinfectants in certain contexts, chlorine remains the most prevalent method due to its established effectiveness and regulatory acceptance in wastewater treatment practices.