EXXON ENERGY

The economic activities of mankind during the last century have led to serious pollution of our planet in a variety of waste production. Air, water and soil in areas of major industrial centers often contain toxic substances which exceed maximum permissible concentration (MPC). Since cases significantly exceeding the MPC sufficiently frequent and increasing morbidity related to pollution of the natural environment, in recent decades, professionals and the media, and follow them and people began to use the term “ecological crisis”.

All you should split the concept of “local” and “global”. The local ENVIRONMENT is expressed in the local raising of dirt-chemical, thermal, noise, electromagnetic-through one or several closely spaced sources. As a rule, the local ENVIRONMENT may be more or less easy to overcome administrative and/or economic measures, for example by improving process technology in the enterprise polluting or through redevelopment or even closure. Much more serious risk is global ecological crisis. It is a consequence of the whole economic activity of our civilization and manifests itself in changing the characteristics of the natural environment on a global scale and thus dangerous to the entire population of the Earth. Deal with the global ENVIRONMENT is much harder than with a local, and this problem will be solved only in the case of minimization of pollution produced by humanity to the level to which the nature of the Earth would be unable to cope on their own. Currently the global ecological crisis includes major components: acid rain pollution, the greenhouse effect, and the so-called ozone hole.

An important source of SO2 is the non-ferrous metal industry: production of copper, nickel, cobalt, zinc and other metals includes stages of roasting of sulphides. Nitrogen oxides-predecessors of nitric acid-enter the atmosphere primarily in the flue gas of boilers of thermal power plants and exhausts of internal combustion engines. At high temperatures, developing in these devices, nitrogen air partially oxidized, giving a mixture of Mono-and nitrogen dioxide.