If a water plant needs to be fed more than 40 pounds of chlorine gas in a single day, what should be done?

When a water plant requires more than 40 pounds of chlorine gas in a single day, installing a manifold to pull from two or more containers simultaneously is the most effective solution. This method allows for a steady and safe delivery of chlorine gas without risking the depletion of a single container, which could lead to operational interruptions or safety hazards due to low chlorine supply.

Using a larger chlorine cylinder may seem like a straightforward option, but it may not always be feasible due to logistical constraints or the plant's design limitations. Increasing the pressure in the existing container is also not advisable; doing so could pose safety risks, as higher pressures can lead to leaks or equipment failure. Reducing the feed rate would limit the plant's ability to meet its disinfection needs and could compromise water quality and safety. Therefore, utilizing a manifold system is the best choice, enabling continuous operation while adhering to safety regulations.