ABSTRACT

With increasing intensity and diversity of anthropogenic impacts on the environment, salinisation of natural waters has become a widespread and important water quality issue. Salinisation is defined as a process whereby there is an increasing concentration of dissolved salts (in most cases major ions) or as the result of this process (Williams, 1987). A number of publications describe salinisation of water in different countries around the world (e.g. Laaksonen and Malin, 1985; Doniec et al., 1986; Van der Weijden and Middelburg, 1989; Lofvendahl, 1990; Smith et al., 1993) and globally (Williams, 1987; Meybeckef al., 1989). It has been noted that as a result of economic activity, mineralisation of water in many water bodies has increased by two to three times or more compared with the natural rate of mineralisation.