Innovation in food grade hypochlorination generation and injection plant at Al Taweelah site Original Research Article

The injection of free chlorine gas in the main potable water trunk is one of the traditional sterilisation techniques that was adopted in order to ensure the disinfections of the MSF distillate before delivering into the potable water network in the United Arab Emirates. This secondary disinfections technique has become more difficult and un–economical both due to the difficulty and costs in the procurement of free chlorine gas in bottles and for the complications required to ensure that the safety aspects related to the use of chlorine gas is properly handled. These require an abatement system with absorption towers and deluge system to be commissioned for safety reasons at six month intervals. The alternative to the injection of free chlorine gas was the sterilization by mean of chlorine generated by seawater electrolysis. In reality the actual seawater electrolysis techniques allow an active Cl2 concentration of maximum 2000 ppm.