The investigation of on-site generation of disinfectant by electrochemical methods

Abstract

In the on-site disinfectant generation, chlorine is produced when a sodium chloride solution is passed through an electrolytic cell and electricity is added. It is safer than conventional chlorination systems, provides higher quality disinfection, and energy savings, therefore, the on-site disinfectant generation process has been started to be preferred in treatment plants. In the study, a continuous flow electrochemical reactor and as the anode material IrO2/RuO2 coated titanium, and as cathode material, pure titanium sieve plates have been used. For electrical energy supply, a direct current power has been used. In the study, the initial pH value was 7 and the current intensity has been chosen as 20 A. The variable parameters have been examined in the study and the examined ranges of these parameters are as follows; flow rate 40,50,100 ml/min, and salt solution concentration (1, 2, 3, 4, and 5M). It has been observed that the pH value of the investigated solution has not been having significant effects on the disinfectant concentration. The increase in the flow rate has been affected the disinfectant production as negative. It has been concluded that high concentrations of disinfectant can be produced electrochemically under optimum conditions.