What is a common treatment method used to disinfect wastewater before it is discharged?

Chlorination is a widely used method for disinfecting wastewater prior to its discharge into natural bodies of water or for further treatment. This process involves the addition of chlorine or chlorine compounds to the wastewater, which effectively kills pathogens such as bacteria, viruses, and protozoa. Chlorination is favored for its effectiveness in reducing the microbial load, thus ensuring that the water meets safety standards for environmental discharge.

Moreover, the use of chlorine is relatively economical and can be applied easily in various wastewater treatment facilities. After disinfection, residual chlorine can be managed with dechlorination methods to prevent adverse effects on aquatic life in receiving waters. Chlorination not only makes the treated water safer for public health but also plays a critical role in protecting the environment.