At the present times dust collecting process exists in a lot of industry branches. It is related not only to implementation emission standards and their contant tightening and also from growing public awarness. Properly choosen dust collecting systems allows to take care of the cleanliness of the enviroment and at the same time have real influence on encrease efficency of some technological procceses.
Proper dust removal is important not only because of adaptation to the new EU resolution regarding air cleanliness, but also koncern for natural environment and consequently, health and fitness of all organisms and important element is to find the right ballance between these two issues.
Dust removal from the work space is one of the emerging problems associated with the growing industry. Harmful gases and exhaust gases a by-product, among others many energy processes pose a threat not only local, operating within planys releasing exhaust gases into the atmosphere, but also global ones. Polluting the natural enviroment with gas with high dust concentration can have a signification impact on health and human life. Reports by the World Health Organization indicate that being in an environment with a high degree of pollination may lead to shorter life expectancy. In addition, there are a number of diseases caused by suspended dust which man is exposed.
Depending on the scale of production and used machines, various filtration methods are used. The most commonly used system designed to remove particulate matter from exhaust gases leaving power installations is to use a series of connected dust collectors. A comprehensive approach to the problem of exhaust gas purification while taking care of the energy efficiency of operated boilers requires the use of integrated complex system, eg cyclone dust separators (or multi-cyclones), which have the ability to consolidate larger particles suspended in the flue gases and waste.
Due to the degree of gas pollination and expected concentrations of solid particles after the filtration process, various types of dust collectors are used. In the case of boilers and heaters, electrostatic precipitators are more and more often used, which are characterized by the highest efficiency of dust removal. High-quality devices, due to the use of electrostatic phenomena, have the ability to filter even the smallest solid particles. What's more, their operation is much cheaper than, for example, bag or ceramic filters, because electrostatic precipitators do not contain porous structures, which should be replaced periodically.
The flue gas produced as a side effect of usage of boilers and heating equipment may adversely affect people working in a polluted environment, they may also contain poisonous substances. One of the constituents of the exhaust are solid particles - ash ascending along with the exhaust gases. It is considered the most harmful to the health pollutant, because due to the very small size of particles easily penetrate into the lungs, as well as into the bloodstream. There are also some heavy metals in the dust, such as arsenic, cadmium, mercury and nickel.