A Importância do reúso da água em indústria siderúrgica

Abstract

Historically, water, essential to the emergence and maintenance of life on our planet in all its forms was an essential component for human development, since the whole process of colonization, an important part of the planet, especially in Brazil, occurred on the banks of waterways.Whereas, the total volume of water on Earth as 1.385.984.000km3, as stated Mierzwa and Hespanhol, (2005), 96.5% of this total is in the oceans and the remainder split between freshwater, brackish and glaciers. However one should consider that this small part portion of water is used by the entire world population often resulting in conflicts of use. Moreover, with increasing population and all increments of industries, the water resource has become increasingly used as if it were infinite and abundant configuring a mistake, because the idea of abundance can not be seen as generic, but contextualized. With the development of industrial processes and the consequent emergence of several products that quickly become essentials, industrial activity has acquired a key character in contemporary society. This paper will talk firstly about the importance of water, the relevant legislation and legal actions of these agents. Soon after, a brief presentation about the importance of water in various sectors of industry and the treatment she provided. And finally, the need for water reuse, since the industry is the main pollutant in the march towards economic growth. Despite their extreme contribution, industrial activity tends to be blamed, and often rightly, by the phenomenon of environmental contamination, mainly thanks to two extremely important factors: a) the accumulation of raw materials and inputs, which involves serious risks of contamination by improper disposal and transport, and b) inefficiency of conversion processes, which necessarily involves the generation of waste (Cavalcanti, 2001). Will be considered, too, that the practice of water reuse brings advantages increasingly positive and present in search of sustainability in the economy.