What is the recommended chlorine dosage and contact time before a new filter is placed into service?

The recommended chlorine dosage and contact time before placing a new filter into service is 50 mg/L for 24 hours. This practice is essential to ensure proper disinfection and to help remove any potential contaminants on the filter media before it starts functioning. The 50 mg/L dosage strikes a balance between efficacy for disinfection and safety for the equipment, allowing sufficient contact time for the chlorine to work effectively against bacteria and other microorganisms that could pose a risk to water quality.

In this context, the 24-hour contact time is designed to maximize the effectiveness of the chlorine, allowing it ample time to penetrate and disinfect the surfaces of the filter media thoroughly. This careful preparation helps to ensure that the filter operates efficiently and that the water passing through it remains safe for consumers.