Resumo:
Metallurgy plants produce water and sludge as a byproduct during different industrial processes. Because of that, development of innovative technologies for treatment of cooling water from metallurgy plants, is one of the most important things nowadays. Zero Solid Discharge is new and innovative solution, which leads to the environmental improvement and metallurgy plant optimization. Main advantage of this technology is that it will increase biological process in the water allowing a significant reduction in sludge production at the end of the water treatment, compared to conventional water treatment systems. Main economic advantage is seen in terms of capital investment as there is no need for additional modifications and modernization of the plants – Zero Capex. The objective of this paper is to show advantage of this application through the main results that have been achieved during its use in one of various plants where it is applied, in plant situated in Europe. Efficiency of application is shown in removing organic and nutrients compounds such as: COD, phosphorous, nitrates, etc., improvements in water quality, reduction in maintenance cost, etc. Furthermore, applied ZSD technology will show clearly the reasons why it is essential in the present and irreplaceable in the future