What is the recommended amount of excess alkalinity that should be available regarding chemical dosages?

The recommended amount of excess alkalinity that should be available regarding chemical dosages is 20 mg/l. Maintaining a certain level of excess alkalinity is crucial in water treatment processes. It ensures that there's enough buffering capacity to stabilize pH levels during chemical additions. This buffering capacity helps prevent rapid fluctuations in pH, which can affect the effectiveness of disinfectants and other chemical treatments.

Having 20 mg/l of excess alkalinity allows for optimal engagement with various treatment chemicals, making certain that they function properly and effectively. This value helps to ensure that processes such as coagulation, flocculation, and sedimentation can occur efficiently, thereby improving overall water quality and treatment effectiveness. Balancing the water's alkalinity also contributes to protecting distribution systems from corrosive influences, thereby extending infrastructure longevity.