The chlorine dioxide-based disinfectants are active at pH range from 2.3 to 2.5. Organic matter reacts with chlorine to lower its effectiveness. The more organic matter in the solution, the more chlorine is tied-up. This organic matter in the water can be a critical problem. Consequently, flumes and dump tanks should be cleaned at regular intervals.
Chlorine exhibits a complex reaction to temperature.
Generally, as temperature increases chlorine becomes more active as a disinfectant. However, raising the temperature increases the ability of organic matter to tie-up chlorine. In addition, raising the temperature also speeds up the loss of chlorine into the atmosphere. A minimum of 15 minutes of exposure to chlorine is required for adequate disinfection. However, efficient disinfection depends upon accurately monitoring the concentration of chlorine in the tank.