Determination of the main parameters of disinfection of drinking water supply facilities by ozone

Abstract

This paper analyzes the existing techniques of disinfection of water wells and drinking water facilities using chlorine-containing disinfectants. The advantages and disadvantages of the promising methods of disinfection by ozone using have been described in the paper. To achieve this goal the recommended values of such parameters as the processing time, the concentration of ozone in the gas mixture, flow rate of ozone, gas mixture flow have been determined. Such values of the investigated parameters in the water treatment as the concentration of ozone in the gas mixture (35, 45, 55 g/m3) and the processing time (15, 30, 45, 60 min) have also been determined. The selection of recommended processing parameters, such factors as the results of studies of the kinetics of ozone water saturation, determination of residual ozone in the water from the incoming in system, the dynamics of ozone decomposition in wa ter, as well as the time required to achieve 100% inactivation of the studied strains of bacteria, the dependence residual ozone concentration of ozone in the gas mixture, the gas mixture flow have been taken into account. To determine the optimal parameters of disinfection depending on the treatment parameters, the regularities presented in the form of equations have been established. The recommended settings to select an ozone generator have been suggested on the basis of these results for proposed scheme of disinfection.