How can the formation of disinfection byproducts be minimized?

Minimizing the formation of disinfection byproducts (DBPs) is crucial for maintaining water quality and safety. The correct choice, which is to change the type of disinfectant used, addresses how the chemical nature of disinfectants influences the potential for DBP formation. Certain disinfectants, like chloramines, produce fewer DBPs compared to others like free chlorine, especially when reacting with organic matter commonly found in water supplies.

By selecting disinfectants that form fewer or less harmful byproducts, water treatment facilities can significantly reduce the overall levels of DBPs. This strategy is supported by research and practical applications in water treatment, highlighting that the choice of disinfectant is a primary control measure for managing water quality.

Adjusting other factors, such as increasing water temperature or altering chlorine levels, can either have no effect or lead to increased DBPs. Extending contact time typically allows for more reactions to occur between chlorine and organic matter, which can result in higher DBP concentrations. Therefore, changing the type of disinfectant is the most effective approach for minimizing these byproducts.