| Abstrakt: |
Considerable attention is paid to improving the environmental safety of additive manufacturing. Manufacturing of articles from titanium using additive technologies (powder metallurgy) is characterized by a high water consumption, and, thus, a large amount of wastewater generated. The paper presents the main trends of using titanium compounds as coagulants for the treatment of natural water (treatment to industrial water grade) and wastewater from additive manufacturing of articles from titanium. It was ascertained that in the processes of wastewater and recycled water treatment, titanium-containing coagulants are much better that the traditional coagulants based on aluminium and iron salts. Treatment of water from surface sources to industrial water grade using titanium coagulants is also highly efficient, and the residual concentrations of pollutants are on average 2.0 - 3.0 times lower than when using the traditional reagents. The use of titanium salts as coagulants allows an average 2-fold reduction of reagent consumption. Coagulation sludge (sediment) forming in the course of water treatment is titanium dioxide and can be used in future as a raw material in different industries. [ABSTRACT FROM AUTHOR] |
