Which process is used for the disinfection of water using chlorine?

Chlorination is a widely recognized method of disinfection that involves adding chlorine to water. This process effectively eliminates pathogens such as bacteria, viruses, and parasites, making the water safe for consumption and use. Chlorine serves as a strong oxidizing agent, effectively interacting with and destroying harmful microorganisms.

In addition to its capabilities as a disinfectant, chlorination also provides residual disinfection, meaning it continues to protect the water as it moves through the distribution system, reducing the risk of recontamination. This process is essential, particularly in municipal water treatment facilities, ensuring that water meets safety standards before being supplied to consumers.

Other processes, such as ozonation, filtration, and pretreatment, serve different purposes in water treatment. Ozonation involves using ozone as an alternative disinfectant, while filtration primarily removes particles and impurities without necessarily disinfecting. Pretreatment refers to initial steps taken to prepare water before the main treatment processes, which could include chlorination, but it does not directly involve the disinfection of the water itself. Thus, the proper identification of chlorination as the method used specifically for disinfecting water with chlorine underscores its importance in water quality management.