What is a common disinfectant used in wastewater treatment?

Chlorine is widely recognized as a common disinfectant used in wastewater treatment due to its effectiveness in eliminating pathogens and controlling microbial growth. Its strong oxidative properties make it capable of breaking down organic materials and disinfecting water. Chlorine has a long history of use in municipal water treatment facilities, where it not only disinfects but also helps in the removal of odor and color from wastewater.

Additionally, chlorine is affordable and readily available, making it a practical choice for various treatment facilities. The process of chlorination is well-understood, and its effects on water treatment processes have been extensively studied, providing confidence in its safety and efficiency when managed appropriately.

Other disinfectants, while effective in certain contexts, may not match the broad applicability and historical usage that chlorine has in wastewater treatment. For instance, ozone is a powerful disinfectant but requires specialized equipment and management, while hydrogen peroxide, although effective, is less commonly used due to higher costs and less familiarity in wastewater settings. Ammonia can serve as a disinfectant in specific processes but is not primarily considered a conventional disinfectant for wastewater treatment, as its role is more related to nitrogen management. Thus, chlorine stands out as the most commonly used disinfectant in this context.