How many pounds of calcium hypochlorite are needed for every 100 square feet of filter?

The correct choice reflects the recommended dosage for calcium hypochlorite used in water treatment specifically for maintaining disinfection in filters. For every 100 square feet of filter surface area, the appropriate amount of calcium hypochlorite is typically established based on the water quality and treatment process requirements.

Using four pounds of calcium hypochlorite per 100 square feet ensures that an adequate concentration is available to effectively disinfect the surface, overcoming any potential contaminants or biofilms that may develop. This concentration supports maintaining microbiological quality in the treated water, thus upholding public health standards and compliance with regulations.

Understanding the necessary dosages is crucial for operators, as it affects the performance of filtration systems and overall water treatment efficiency. Typically, dosing information is available in operational guidelines or manufacturer recommendations, and it's essential for treatment professionals to be aware of these standards to ensure effective water treatment processes.