The effect of water ozonation on the efficiency of extracting natural organic matter during filtration through biologically activated carbon

The effect of the varied content of biodegradable organic carbon (BDOC) in solutions of fulvic acids (FA) after the aeration and ozonation processes on the efficiency of adsorption and biofiltration of FA solutions through the activated carbon has been investigated. It has been found that the reduction of the BDOC fraction in FA solutions enhances the efficiency of their adsorption, but decreases the efficiency of biofiltration. It has been shown that the performance period of adsorption filter can be significantly extended for obtaining biologically stable drinking water by increasing the BDOC content in FA solutions at the expense of the intermediate ozonation after adsorption.