Nomogram for determining the chemical composition of a mixture of waters

Abstract

The mixing of two waters with different concentrations and chemical compositions can be analyzed by the graph-analytical method proposed by A. N. Ogilvy. Having established the rectilinear law of mixing two waters, A. N. Ogilvy constructs a graph in a rectangular coordinate system, plotting the total mineralization of the mixed water along the x-axis, and the content of individual components in the mixing waters along the y-axis. Such a graph-nomogram does not make it possible to take into account the volumes of mixing waters. The nomogram we propose compensates for the shortcoming of A. N. Ogilvy's graph and can be used in cases where it is necessary to determine the quantities of mixing waters. The nomogram we constructed is based on the law of change of all components of mixing waters according to the equation of a straight line established by A. N. Ogilvy. The content of components in mg/l or g/l from 0 to any value limited by the data of chemical analysis is plotted along the y-axis in a certain scale. The divisions convenient for calculating the ratio of the volumes of mixing waters are plotted along the x-axis, let's put it from 0 to 10 or, more conveniently, from 0 to 100. The left column of the nomogram (y-axis) is allocated for the components of one of the mixing waters, the right one - for the components of the second water.