| Continental water pollution by heavy metal ions is one of the most common problems actually found in the environment. Some examples can be shown to stand out natural disasters derived from human slightly responsible actions, such as those happened in the basin of Guadiamar River and Donana's National Park (Seville) provoked by poured wastes from Boliden Company, or also mining pollution in Rio Tinto (Huelva).;The historical need of industrial wastes valorization must also be considered. Industrial wastes have traditionally been rejected without considering their reutilization. Water polluted by heavy metal ions can be found among those wastes and even residual heat flows from any industrial process can be found too. Residual heat flows can be used as a heat source as well as water polluted by heavy metal ions, that has traditionally generated problems because of its rejection, can be used as row materials in some industrial processes. Thus, the environment is freed from one of its main pollutants and the companies save the treatment costs.;The use of residual heat flows as a heat source to water decontamination can be considered as a potentially feasible option for their valorization, specially if they come from boilers or any other industrial thermal process. The utilization of residual heat flows is not only a new dimension in industrial economic save possibilities but also an important improvement in the environmental problems solutions derived from the rejection of metal ions polluted water into the environment.;Finally, an investigation line appears, that tries to achieve the decontamination of this kind of water with reasonable costs by means of technically feasible procedures, using evaporative technologies to get the best advantages for the natural environment. |
